{"id":49226,"date":"2026-02-26T10:35:30","date_gmt":"2026-02-26T10:35:30","guid":{"rendered":"https:\/\/www.kdmsteel.com\/?p=49226"},"modified":"2026-03-07T10:30:30","modified_gmt":"2026-03-07T10:30:30","slug":"api-650-vs-api-620","status":"publish","type":"post","link":"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/","title":{"rendered":"API 650 \u4e0e API 620 \u2013 \u60a8\u7684\u50a8\u7f50\u5e94\u8be5\u9009\u62e9\u54ea\u4e00\u4e2a\uff1f"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">\u5728\u9009\u62e9\u7528\u4e8e\u77f3\u6cb9\u3001\u5929\u7136\u6c14\u6216\u5316\u5b66\u54c1\u7684\u710a\u63a5\u94a2\u5236\u50a8\u7f50\u65f6\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230 API 650 \u4e0e API 620 \u54ea\u4e2a\u66f4\u597d\u7684\u95ee\u9898\u3002\u8fd9\u4e24\u4e2a\u6807\u51c6\u5747\u6765\u81ea\u2026\u2026<\/span><a href=\"https:\/\/www.api.org\/\"> <b>\u7f8e\u56fd\u77f3\u6cb9\u5b66\u4f1a<\/b><\/a><span style=\"font-weight: 400;\"> \u5e76\u4f1a\u544a\u8bc9\u4f60\u5982\u4f55\u5efa\u9020\u50a8\u7f50\uff0c\u4f46\u5b83\u4eec\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u6e29\u5ea6\u548c\u538b\u529b\u3002\u505a\u51fa\u6b63\u786e\u7684\u9009\u62e9\u5c06\u957f\u671f\u4fdd\u969c\u60a8\u7684\u9884\u7b97\u3001\u5b89\u5168\u548c\u5de5\u827a\u6d41\u7a0b\u3002.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u5207\u6362\u76ee\u5f55\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u5207\u6362<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#What_Is_API_650_Standard\" >\u4ec0\u4e48\u662f API 650 \u6807\u51c6\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#What_Is_API_620_Standard\" >\u4ec0\u4e48\u662f API 620 \u6807\u51c6\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Side-by-Side_Comparison_API_650_vs_API_620\" >\u5e76\u6392\u6bd4\u8f83\uff1aAPI 650 \u4e0e API 620<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Applicable_Pressure_Range\" >\u9002\u7528\u538b\u529b\u8303\u56f4<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Temperature_Range\" >\u6e29\u5ea6\u8303\u56f4<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-2\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-2\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Scope_and_Purpose_of_Standards\" >\u6807\u51c6\u7684\u8303\u56f4\u548c\u76ee\u7684<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-3\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-3\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Tank_Configuration_Geometry\" >\u50a8\u7f50\u7ed3\u6784\u53ca\u51e0\u4f55\u5f62\u72b6<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-4\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-4\" >API 620\uff1a<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Typical_Tank_Sizes\" >\u5178\u578b\u50a8\u7f50\u5c3a\u5bf8<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-5\" >API 650<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Fabrication_Erection\" >\u5236\u9020\u4e0e\u5b89\u88c5<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-6\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-5\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Materials_Allowed\" >\u5141\u8bb8\u4f7f\u7528\u7684\u6750\u6599<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-7\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-6\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Inspection_and_Testing_Standards\" >\u68c0\u9a8c\u548c\u6d4b\u8bd5\u6807\u51c6<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-8\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-7\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Roof_Closure_Types\" >\u5c4b\u9876\u548c\u5c01\u9876\u7c7b\u578b<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-9\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-8\" >API 620<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Application_Industry_Use\" >\u5e94\u7528\u53ca\u884c\u4e1a\u7528\u9014<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650-10\" >API 650<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620-9\" >API 620<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650_vs_API_620_%E2%80%93_Quick_Comparison_Table\" >API 650 \u4e0e API 620 \u2013 \u5feb\u901f\u5bf9\u6bd4\u8868<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_650_vs_API_620_%E2%80%93_Which_One_Is_Best\" >API 650 \u4e0e API 620 \u2013 \u54ea\u4e2a\u66f4\u597d\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#FAQs\" >\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Can_API_620_tanks_work_when_the_pressure_outside_is_normal\" >API 620\u50a8\u7f50\u5728\u5916\u90e8\u538b\u529b\u6b63\u5e38\u7684\u60c5\u51b5\u4e0b\u53ef\u4ee5\u5de5\u4f5c\u5417\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#API_620_or_API_650_Which_costs_less\" >API 620 \u8fd8\u662f API 650\uff1f\u54ea\u4e2a\u66f4\u4fbf\u5b9c\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Is_it_possible_to_change_an_API_650_tank_to_an_API_620_tank\" >\u662f\u5426\u53ef\u4ee5\u5c06 API 650 \u50a8\u7f50\u66f4\u6362\u4e3a API 620 \u50a8\u7f50\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#How_are_inspections_done_for_API_620_and_API_650_the_same\" >API 620 \u548c API 650 \u7684\u68c0\u9a8c\u65b9\u6cd5\u6709\u4f55\u76f8\u540c\u4e4b\u5904\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Can_API_620_and_API_650_be_used_together\" >API 620 \u548c API 650 \u53ef\u4ee5\u4e00\u8d77\u4f7f\u7528\u5417\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Do_radiography_tests_have_to_be_done_for_API_620\" >API 620 \u6807\u51c6\u662f\u5426\u5fc5\u987b\u8fdb\u884c\u5c04\u7ebf\u7167\u76f8\u6d4b\u8bd5\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Does_temperature_play_a_role_in_choosing_between_API_620_and_650\" >\u5728\u9009\u62e9 API 620 \u8fd8\u662f 650 \u65f6\uff0c\u6e29\u5ea6\u662f\u5426\u8d77\u4f5c\u7528\uff1f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/#Get_Customized_Storage_Tanks_from_KDM_Steel\" >\u4eceKDM Steel\u83b7\u53d6\u5b9a\u5236\u50a8\u7f50<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_API_650_Standard\"><\/span><b>\u4ec0\u4e48\u662f API 650 \u6807\u51c6\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49228\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-89.png\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-89.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-89-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-89-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-89-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">API 650 \u662f\u4e00\u5957\u7528\u4e8e\u89c4\u5212\u548c\u5efa\u9020\u5de5\u4f5c\u538b\u529b\u63a5\u8fd1\u5927\u6c14\u538b\u7684\u710a\u63a5\u50a8\u7f50\u7684\u6807\u51c6\u3002\u5b83\u4e3b\u8981\u9488\u5bf9\u5730\u4e0a\u50a8\u7f50\uff0c\u7528\u4e8e\u50a8\u5b58\u539f\u6cb9\u3001\u6c34\u548c\u6210\u54c1\u3002\u8be5\u6807\u51c6\u4e3b\u8981\u5173\u6ce8\u5982\u4f55\u9009\u62e9\u5408\u9002\u7684\u6750\u6599\uff0c\u786e\u4fdd\u5728\u4f4e\u538b\u73af\u5883\u4e0b\u50a8\u5b58\u4ea7\u54c1\u7684\u5b89\u5168\uff0c\u4ee5\u53ca\u5982\u4f55\u5bf9\u50a8\u7f50\u8fdb\u884c\u68c0\u9a8c\u548c\u6d4b\u8bd5\u3002.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_API_620_Standard\"><\/span><b>\u4ec0\u4e48\u662f API 620 \u6807\u51c6\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49229\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-90.png\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-90.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-90-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-90-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-90-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">API 620 \u544a\u8bc9\u6211\u4eec\u5982\u4f55\u89c4\u5212\u548c\u6784\u5efa\u5927\u578b\u9879\u76ee\uff0c,<\/span><a href=\"https:\/\/www.kdmsteel.com\/zh\/\u4e0d\u9508\u94a2\u7f50\u710a\u63a5\/\"> <b>\u710a\u63a5\u4e0d\u9508\u94a2\u7f50<\/b><\/a><span style=\"font-weight: 400;\"> \u8fd9\u79cd\u5bb9\u5668\u5185\u90e8\u538b\u529b\u8f83\u4f4e\u81f3\u4e2d\u7b49\u3002\u5b83\u901a\u5e38\u7528\u4e8e\u50a8\u5b58\u9700\u8981\u51b7\u85cf\u6216\u51b7\u51bb\u7684\u7269\u54c1\uff0c\u4f8b\u5982<\/span><b> \u6db2\u5316\u77f3\u6cb9\u6c14<\/b><span style=\"font-weight: 400;\"> \u4ee5\u53ca\u6db2\u5316\u5929\u7136\u6c14\u3002\u5b83\u6bd4 API 650 \u80fd\u627f\u53d7\u66f4\u9ad8\u7684\u8bbe\u8ba1\u5e94\u529b\u548c\u66f4\u4e25\u82db\u7684\u6e29\u5ea6\u6761\u4ef6\u3002.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Side-by-Side_Comparison_API_650_vs_API_620\"><\/span><b>\u5e76\u6392\u6bd4\u8f83\uff1aAPI 650 \u4e0e API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49230\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-91.png\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-91.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-91-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-91-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-91-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Applicable_Pressure_Range\"><\/span><b>\u9002\u7528\u538b\u529b\u8303\u56f4<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650 \u6807\u51c6\u8bbe\u8ba1\u7528\u4e8e\u5728\u5e38\u538b\u6216\u6781\u4f4e\u538b\u529b\u4e0b\u50a8\u5b58\u6db2\u4f53\u3002\u5b83\u9002\u7528\u4e8e\u5de5\u4f5c\u538b\u529b\u8303\u56f4\u4ece\u6b63\u5e38\u6c14\u538b\u5230\u7ea6 2.5 psig \u7684\u50a8\u7f50\u3002\u8bb8\u591a\u70bc\u6cb9\u5382\u548c\u6563\u88c5\u50a8\u5b58\u573a\u6240\u4f7f\u7528\u6b64\u7c7b\u50a8\u7f50\u6765\u50a8\u5b58\u6db2\u4f53\uff0c\u4ee5\u907f\u514d\u7f50\u5185\u538b\u529b\u8fc7\u9ad8\u3002API 650 \u6807\u51c6\u7ecf\u6d4e\u9ad8\u6548\uff0c\u662f\u50a8\u5b58\u6c34\u3001\u67f4\u6cb9\u3001\u539f\u6cb9\u548c\u5176\u4ed6\u7c7b\u4f3c\u4ea7\u54c1\u7684\u7406\u60f3\u9009\u62e9\uff0c\u4e14\u5df2\u88ab\u4e1a\u754c\u5e7f\u6cdb\u8ba4\u53ef\u3002\u5b83\u4e0d\u4f1a\u589e\u52a0\u538b\u529b\u8bbe\u8ba1\u8fc7\u7a0b\u7684\u590d\u6742\u6027\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 620 \u9002\u7528\u4e8e\u5185\u90e8\u538b\u529b\u8f83\u4f4e\u81f3\u4e2d\u7b49\u7684\u50a8\u7f50\uff0c\u901a\u5e38\u9ad8\u4e8e 2.5 psig\uff0c\u6700\u9ad8\u53ef\u8fbe 15 psig \u6216\u66f4\u9ad8\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u8bbe\u8ba1\u9700\u6c42\u3002\u5b83\u901a\u5e38\u7528\u4e8e\u6db2\u5316\u77f3\u6cb9\u6c14 (LPG) \u7b49\u6613\u6325\u53d1\u6216\u52a0\u538b\u71c3\u6599\u3002\u8be5\u6807\u51c6\u5141\u8bb8\u66f4\u9ad8\u7684\u819c\u5e94\u529b\u3001\u66f4\u5f3a\u7684\u58f3\u4f53\u677f\u548c\u66f4\u597d\u7684\u7ed3\u6784\u5f3a\u5ea6\uff0c\u4ece\u800c\u786e\u4fdd\u7cfb\u7edf\u5728\u9ad8\u5185\u90e8\u538b\u529b\u4e0b\u4e5f\u80fd\u5b89\u5168\u8fd0\u884c\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Temperature_Range\"><\/span><b>\u6e29\u5ea6\u8303\u56f4<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-2\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650\u50a8\u7f50\u901a\u5e38\u8bbe\u8ba1\u7528\u4e8e\u5f53\u5730\u6b63\u5e38\u6e29\u5ea6\u73af\u5883\u3002\u867d\u7136\u5b83\u4eec\u53ef\u4ee5\u627f\u53d7\u7565\u9ad8\u7684\u6e29\u5ea6\uff0c\u4f46\u8be5\u6807\u51c6\u4e0d\u9002\u7528\u4e8e\u9700\u8981\u4f4e\u6e29\u6216\u6781\u4f4e\u6e29\u73af\u5883\u7684\u5e94\u7528\u3002\u5f53\u6e29\u5ea6\u5927\u5e45\u4e0b\u964d\u65f6\uff0c\u6750\u6599\u7684\u97e7\u6027\u548c\u6297\u65ad\u88c2\u6027\u80fd\u5c31\u663e\u5f97\u81f3\u5173\u91cd\u8981\u3002\u7531\u4e8e\u5176\u5c40\u9650\u6027\uff0cAPI 650\u4e0d\u9002\u7528\u4e8e\u6781\u5bd2\u5730\u533a\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-2\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 620 \u65e8\u5728\u5904\u7406\u9700\u8981\u5728\u4f4e\u6e29\u6216\u51b7\u51bb\u6761\u4ef6\u4e0b\u5b58\u50a8\u7269\u54c1\u7684\u5e94\u7528\uff0c\u4f8b\u5982\uff1a <\/span><b>\u6db2\u5316\u5929\u7136\u6c14<\/b><span style=\"font-weight: 400;\"> \u4ee5\u53ca\u5176\u4ed6\u6db2\u5316\u6c14\u4f53\u3002\u5bf9\u4e8e\u4f4e\u6e29\u97e7\u6027\u3001\u51b2\u51fb\u8bd5\u9a8c\u548c\u7279\u5b9a\u6750\u6599\u7684\u4f7f\u7528\uff0c\u90fd\u6709\u4e25\u683c\u7684\u89c4\u5b9a\u3002API 620 \u4e3a\u5728\u96f6\u5ea6\u4ee5\u4e0b\u6e29\u5ea6\u4e0b\u8fd0\u884c\u7684\u8bbe\u65bd\u63d0\u4f9b\u91cd\u8981\u7684\u51b6\u91d1\u4fdd\u62a4\uff0c\u4ee5\u9632\u6b62\u7ed3\u6784\u65ad\u88c2\u6216\u53d8\u8106\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Scope_and_Purpose_of_Standards\"><\/span><b>\u6807\u51c6\u7684\u8303\u56f4\u548c\u76ee\u7684<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-3\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650 \u6db5\u76d6\u5927\u578b\u5730\u4e0a\u5e38\u538b\u50a8\u7f50\u7684\u89c4\u5212\u3001\u5efa\u9020\u3001\u68c0\u9a8c\u548c\u6d4b\u8bd5\uff0c\u5e76\u4e3a\u5168\u7403\u77f3\u6cb9\u548c\u6db2\u4f53\u50a8\u5b58\u7684\u5efa\u9020\u6280\u672f\u5236\u5b9a\u4e86\u6807\u51c6\u3002\u7531\u4e8e API 650 \u5728\u5168\u7403\u8303\u56f4\u5185\u5f97\u5230\u8ba4\u53ef\u4e14\u6807\u51c6\u7b80\u660e\u6613\u61c2\uff0c\u56e0\u6b64\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u70bc\u6cb9\u5382\u3001\u7801\u5934\u548c\u5de5\u4e1a\u4ed3\u50a8\u8bbe\u65bd\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-3\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 620\u6807\u51c6\u9664\u4e86\u6db5\u76d6\u7a7a\u6c14\u50a8\u7f50\u5916\uff0c\u8fd8\u5305\u62ec\u5728\u9ad8\u538b\u4f4e\u6e29\u73af\u5883\u4e0b\u5de5\u4f5c\u7684\u5bb9\u5668\u3002\u5b83\u589e\u52a0\u4e86\u66f4\u5148\u8fdb\u7684\u5e94\u529b\u5206\u6790\u65b9\u6cd5\u3001\u66f4\u4e25\u683c\u7684\u63a5\u5934\u6548\u7387\u8981\u6c42\u4ee5\u53ca\u66f4\u5b8c\u5584\u7684\u8d28\u91cf\u63a7\u5236\u3002\u56e0\u6b64\uff0cAPI 620\u6807\u51c6\u53ef\u5e94\u7528\u4e8e\u9700\u8981\u5728\u66f4\u4e25\u82db\u6761\u4ef6\u4e0b\u8fd0\u884c\u7684\u77f3\u6cb9\u5de5\u5382\u548c\u5929\u7136\u6c14\u52a0\u5de5\u5382\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Tank_Configuration_Geometry\"><\/span><b>\u50a8\u7f50\u7ed3\u6784\u53ca\u51e0\u4f55\u5f62\u72b6<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-4\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u5927\u591a\u6570API 650\u50a8\u7f50\u4e3a\u76f4\u7b52\u5f62\uff0c\u5e95\u90e8\u5e73\u5766\uff0c\u4fbf\u4e8e\u73b0\u573a\u5b89\u88c5\u3002\u6839\u636e\u4ea7\u54c1\u7a33\u5b9a\u6027\uff0c\u7f50\u9876\u8bbe\u8ba1\u53ef\u5206\u4e3a\u56fa\u5b9a\u9876\u3001\u6d6e\u9876\u548c\u655e\u9876\u4e09\u79cd\u3002\u8fd9\u79cd\u5f62\u72b6\u7684\u8bbe\u8ba1\u65e8\u5728\u7b80\u5316\u7ed3\u6784\uff0c\u786e\u4fdd\u8bbe\u8ba1\u9ad8\u6548\u8fd0\u884c\uff0c\u5e76\u964d\u4f4e\u5728\u5927\u6c14\u4e2d\u50a8\u5b58\u5927\u91cf\u7a7a\u6c14\u7684\u6210\u672c\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-4\"><\/span><b>API 620\uff1a<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u6309\u7167 API 620 \u6807\u51c6\u5efa\u9020\u7684\u50a8\u7f50\u901a\u5e38\u91c7\u7528\u7a79\u9876\u5f0f\u7f50\u9876\u6216\u8010\u538b\u9876\u76d6\uff0c\u4ee5\u627f\u53d7\u7f50\u5185\u538b\u529b\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u7f50\u4f53\u94a2\u677f\u5c3a\u5bf8\u66f4\u5927\u3001\u5f3a\u5ea6\u66f4\u9ad8\uff0c\u56e0\u6b64\u80fd\u591f\u627f\u53d7\u66f4\u9ad8\u7684\u5e94\u529b\u3002\u4e3a\u4e86\u4f7f\u4f4e\u6e29\u50a8\u7f50\u80fd\u591f\u5728\u4f4e\u6e29\u4e0b\u6b63\u5e38\u5de5\u4f5c\uff0c\u4f1a\u5728\u50a8\u7f50\u5185\u90e8\u7ed3\u6784\u4e2d\u5185\u7f6e\u9694\u70ed\u7cfb\u7edf\u548c\u7279\u6b8a\u4fdd\u6e29\u5c42\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Typical_Tank_Sizes\"><\/span><b>\u5178\u578b\u50a8\u7f50\u5c3a\u5bf8<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-5\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650\u50a8\u7f50\u53ef\u50a8\u5b58\u5404\u79cd\u4e0d\u540c\u5bb9\u91cf\u7684\u6cb9\u54c1\uff0c\u4ece\u5c0f\u578b\u5de5\u827a\u50a8\u7f50\u5230\u5bb9\u91cf\u8d85\u8fc710\u4e07\u6876\u7684\u5927\u578b\u539f\u6cb9\u50a8\u7f50\u5747\u53ef\u9002\u7528\u3002\u7531\u4e8e\u5176\u5c3a\u5bf8\u53ef\u6839\u636e\u9700\u8981\u5b9a\u5236\uff0c\u56e0\u6b64\u975e\u5e38\u9002\u5408\u70bc\u6cb9\u5382\u548c\u6563\u88c5\u50a8\u5b58\u4e2d\u5fc3\u7b49\u9700\u8981\u50a8\u5b58\u5927\u91cf\u7a7a\u6c14\u4f46\u53c8\u65e0\u9700\u652f\u4ed8\u989d\u5916\u538b\u529b\u76f8\u5173\u8bbe\u8ba1\u6210\u672c\u7684\u573a\u6240\u3002.<\/span><\/p>\n<p><b>API 620<\/b><\/p>\n<p><span style=\"font-weight: 400;\">\u8fd9\u4e9b\u50a8\u7f50\u7684\u8bbe\u8ba1\u5c3a\u5bf8\u4e5f\u975e\u5e38\u5927\uff0c\u9002\u7528\u4e8e\u9700\u8981\u5927\u5bb9\u91cf\u5b58\u50a8\u7a7a\u95f4\u4ee5\u53ca\u5185\u90e8\u538b\u529b\u6216\u4f4e\u6e29\u73af\u5883\u7684\u573a\u5408\u3002\u56e0\u6b64\uff0cAPI 620 \u662f\u5efa\u9020\u6db2\u5316\u5929\u7136\u6c14 (LNG) \u548c\u6db2\u5316\u77f3\u6cb9\u6c14 (LPG) \u50a8\u7f50\u7684\u6700\u4f73\u6807\u51c6\uff0c\u8fd9\u4e9b\u50a8\u7f50\u65e2\u8981\u5bb9\u91cf\u5927\u53c8\u8981\u575a\u56fa\u8010\u7528\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Fabrication_Erection\"><\/span><b>\u5236\u9020\u4e0e\u5b89\u88c5<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-6\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u6309\u7167 API 650 \u6807\u51c6\u8fdb\u884c\u7684\u7f50\u4f53\u5236\u9020\u901a\u5e38\u5728\u73b0\u573a\u8fdb\u884c\uff0c\u4f7f\u7528\u710a\u63a5\u5728\u4e00\u8d77\u7684\u94a2\u677f\u3002\u7f50\u4f53\u5b89\u88c5\u5de5\u827a\u6d41\u7a0b\u6210\u719f\uff0c\u4e3a\u5927\u591a\u6570\u7f50\u4f53\u5236\u9020\u5546\u6240\u719f\u77e5\u548c\u91c7\u7528\u3002\u6807\u51c6\u5316\u7684\u68c0\u9a8c\u548c\u6d4b\u8bd5\u65b9\u6cd5\u6709\u52a9\u4e8e\u52a0\u5feb\u5efa\u9020\u901f\u5ea6\uff0c\u63a7\u5236\u9879\u76ee\u8fdb\u5ea6\uff0c\u5e76\u964d\u4f4e\u603b\u5236\u9020\u6210\u672c\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-5\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u7531\u4e8eAPI 620\u5236\u9020\u6d89\u53ca\u66f4\u9ad8\u7684\u538b\u529b\u548c\u5e94\u529b\uff0c\u56e0\u6b64\u9700\u8981\u66f4\u4e25\u683c\u7684\u710a\u63a5\u65b9\u6cd5\u3001\u66f4\u5b8c\u5584\u7684\u8d28\u91cf\u63a7\u5236\u548c\u66f4\u5168\u9762\u7684\u68c0\u9a8c\u3002\u5f88\u591a\u65f6\u5019\uff0c\u5b89\u88c5\u4e5f\u9700\u8981\u66f4\u4e25\u683c\u7684\u5de5\u7a0b\u63a7\u5236\u548c\u66f4\u5148\u8fdb\u7684\u6d4b\u8bd5\u65b9\u6cd5\u3002\u8fd9\u867d\u7136\u589e\u52a0\u4e86\u590d\u6742\u6027\uff0c\u4f46\u4ece\u957f\u8fdc\u6765\u770b\uff0c\u4e5f\u4f7f\u4e4b\u66f4\u52a0\u5b89\u5168\u53ef\u9760\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Materials_Allowed\"><\/span><b>\u5141\u8bb8\u4f7f\u7528\u7684\u6750\u6599<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-7\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650 \u6807\u51c6\u4e3b\u8981\u5141\u8bb8\u4f7f\u7528\u53ef\u5728\u5e38\u6e29\u5e38\u538b\u4e0b\u8fd0\u884c\u7684\u78b3\u94a2\u4ea7\u54c1\u3002\u6750\u6599\u7684\u9009\u62e9\u53d6\u51b3\u4e8e\u5176\u710a\u63a5\u6027\u80fd\u548c\u65e5\u5e38\u4f7f\u7528\u6240\u9700\u7684\u5f3a\u5ea6\u3002\u4f46\u5f53\u9700\u8981\u4f4e\u6e29\u6216\u7279\u6b8a\u5de5\u51b5\u65f6\uff0c\u53ef\u4f9b\u9009\u62e9\u7684\u6750\u6599\u5c31\u76f8\u5bf9\u8f83\u5c11\u4e86\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-6\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 620 \u6807\u51c6\u5141\u8bb8\u4f7f\u7528\u66f4\u5e7f\u6cdb\u7684\u6750\u6599\uff0c\u4f8b\u5982\u4f4e\u6e29\u4e0b\u97e7\u6027\u66f4\u5f3a\u7684\u94a2\u6750\u3002\u8fd9\u79cd\u66f4\u5e7f\u6cdb\u7684\u6750\u6599\u9009\u62e9\u5bf9\u4e8e\u9700\u8981\u4fdd\u6301\u4f4e\u6e29\u6216\u51b7\u51bb\u72b6\u6001\u7684\u5e94\u7528\u81f3\u5173\u91cd\u8981\u3002\u8be5\u6807\u51c6\u786e\u4fdd\u6750\u6599\u5373\u4f7f\u5728\u9ad8\u6e29\u4e0b\u4e5f\u80fd\u4fdd\u6301\u5f3a\u5ea6\u3001\u67d4\u97e7\u6027\u548c\u4e0d\u6613\u65ad\u88c2\u7684\u7279\u6027\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Inspection_and_Testing_Standards\"><\/span><b>\u68c0\u9a8c\u548c\u6d4b\u8bd5\u6807\u51c6<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-8\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u6839\u636e\u63a5\u5934\u5206\u7c7b\uff0cAPI 650 \u8981\u6c42\u8fdb\u884c\u9002\u5f53\u7684\u68c0\u9a8c\u3001\u6c34\u538b\u8bd5\u9a8c\u548c\u6709\u9650\u7684\u5c04\u7ebf\u63a2\u4f24\u3002\u8be5\u68c0\u9a8c\u7a0b\u5e8f\u5b9e\u7528\u4e14\u6210\u672c\u4e0d\u9ad8\uff0c\u56e0\u6b64\u53ef\u7528\u4e8e\u5e38\u538b\u50a8\u7f50\uff0c\u5e76\u7b26\u5408\u77f3\u6cb9\u884c\u4e1a\u7684\u5b89\u5168\u89c4\u8303\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-7\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 620 \u8981\u6c42\u91c7\u7528\u66f4\u4e25\u683c\u7684\u65e0\u635f\u68c0\u6d4b\u6807\u51c6\u548c\u66f4\u5e7f\u6cdb\u7684\u5c04\u7ebf\u7167\u76f8\u68c0\u6d4b\uff0c\u5c24\u5176\u662f\u5728\u627f\u538b\u533a\u57df\u3002\u8fd9\u4e9b\u66f4\u5b8c\u5584\u7684\u68c0\u6d4b\u65b9\u6cd5\u80fd\u8ba9\u60a8\u66f4\u6709\u4fe1\u5fc3\u4fdd\u8bc1\u710a\u7f1d\u5f3a\u5ea6\u4ee5\u53ca\u7ed3\u6784\u5728\u538b\u529b\u548c\u4f4e\u6e29\u4e0b\u7684\u6027\u80fd\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Roof_Closure_Types\"><\/span><b>\u5c4b\u9876\u548c\u5c01\u9876\u7c7b\u578b<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-9\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650 \u9002\u7528\u4e8e\u4e0d\u540c\u7c7b\u578b\u7684\u5c4b\u9876\uff0c\u4f8b\u5982\u56fa\u5b9a\u5c4b\u9876\u3001\u79fb\u52a8\u5c4b\u9876\u548c\u655e\u9876\u8bbe\u8ba1\u3002.<\/span><a href=\"https:\/\/www.kdmsteel.com\/zh\/\u56fa\u5b9a\u9876\u6c34\u7bb1\u4e0e\u6d6e\u9876\u6c34\u7bb1\/\"> <b>\u56fa\u5b9a\u9876\u50a8\u7f50\u548c\u6d6e\u9876\u50a8\u7f50<\/b><\/a><span style=\"font-weight: 400;\"> \u901a\u5e38\u7528\u4e8e\u50a8\u5b58\u6613\u6325\u53d1\u71c3\u6599\uff0c\u4ee5\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u6392\u653e\u548c\u84b8\u6c7d\u635f\u5931\u3002\u4e0d\u540c\u7684\u5c4b\u9876\u9009\u62e9\u53ef\u4ee5\u9002\u5e94\u4e0d\u540c\u7c7b\u578b\u7684\u50a8\u5b58\u548c\u73af\u5883\u9700\u6c42\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-8\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 620 \u901a\u5e38\u91c7\u7528\u80fd\u591f\u627f\u53d7\u538b\u529b\u7684\u7a79\u9876\u5f0f\u7f50\u9876\uff0c\u8fd9\u79cd\u7f50\u9876\u662f\u50a8\u7f50\u538b\u529b\u9650\u5236\u7684\u4e00\u90e8\u5206\u3002\u8fd9\u4e9b\u7f50\u9876\u7cfb\u7edf\u65e8\u5728\u5b89\u5168\u5730\u627f\u8f7d\u7f50\u5185\u7684\u7a7a\u6c14\u8f7d\u8377\u3002\u5f53\u50a8\u5b58\u6db2\u5316\u77f3\u6cb9\u6c14\u548c\u51b7\u51bb\u6c14\u4f53\u65f6\uff0c\u7f50\u9876\u7ed3\u6784\u5bf9\u4e8e\u4fdd\u6301\u5bc6\u5c01\u5b8c\u6574\u6027\u81f3\u5173\u91cd\u8981\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Application_Industry_Use\"><\/span><b>\u5e94\u7528\u53ca\u884c\u4e1a\u7528\u9014<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"API_650-10\"><\/span><b>API 650<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">API 650\u5e7f\u6cdb\u5e94\u7528\u4e8e\u70bc\u6cb9\u5382\u3001\u71c3\u6599\u6e2f\u3001\u6c34\u5904\u7406\u5382\u548c\u5de5\u5382\u7b49\u573a\u6240\u3002\u5b83\u662f\u4ee5\u6c14\u538b\u50a8\u5b58\u6c34\u3001\u67f4\u6cb9\u3001\u6c7d\u6cb9\u3001\u539f\u6cb9\u548c\u5176\u4ed6\u7c7b\u4f3c\u7269\u8d28\u7684\u6700\u4f73\u65b9\u5f0f\u3002\u7531\u4e8e\u5176\u6613\u4e8e\u4f7f\u7528\u4e14\u88ab\u5168\u7403\u5e7f\u6cdb\u63a5\u53d7\uff0c\u5b83\u4ecd\u7136\u662f\u6700\u6d41\u884c\u7684\u50a8\u7f50\u6807\u51c6\u3002.<\/span><\/p>\n<h4><span class=\"ez-toc-section\" id=\"API_620-9\"><\/span><b>API 620<\/b><span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><span style=\"font-weight: 400;\">\u5728\u6db2\u5316\u5929\u7136\u6c14\u6e2f\u53e3\u3001\u6db2\u5316\u77f3\u6cb9\u6c14\u50a8\u5b58\u8bbe\u65bd\u3001\u77f3\u5316\u5382\u548c\u5929\u7136\u6c14\u5904\u7406\u88c5\u7f6e\u4e2d\uff0cAPI 620 \u662f\u6700\u4f73\u9009\u62e9\u3002\u5728\u538b\u529b\u6216\u51b7\u85cf\u6761\u4ef6\u4e0b\u50a8\u5b58\u6db2\u4f53\u65f6\uff0c\u8be5\u6807\u51c6\u8d4b\u4e88\u7ed3\u6784\u6240\u9700\u7684\u5f3a\u5ea6\u548c\u6750\u6599\u53ef\u9760\u6027\uff0c\u786e\u4fdd\u5176\u957f\u671f\u5b89\u5168\u8fd0\u884c\u3002.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"API_650_vs_API_620_%E2%80%93_Quick_Comparison_Table\"><\/span><b>API 650 \u4e0e API 620 \u2013 \u5feb\u901f\u5bf9\u6bd4\u8868<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b>\u8303\u56f4<\/b><\/td>\n<td><b>API 650<\/b><\/td>\n<td><b>API 620<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>\u9002\u7528\u538b\u529b\u8303\u56f4<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u5927\u6c14\u538b\u81f3\u7ea6 2.5 psig<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u9ad8\u4e8e\u7ea6 2.5 psig\uff0c\u4f4e\u81f3\u4e2d\u7b49\u538b\u529b<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u6e29\u5ea6\u8303\u56f4<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u73af\u5883\u6e29\u5ea6<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u4f4e\u6e29\u548c\u8d85\u4f4e\u6e29<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u8303\u56f4\u4e0e\u76ee\u7684<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u5927\u6c14\u50a8\u7f50<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u538b\u529b\u7f50\u548c\u4f4e\u6e29\u7f50<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u50a8\u7f50\u914d\u7f6e<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u5782\u76f4\u3001\u5706\u67f1\u5f62\u3001\u5e73\u5e95<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u52a0\u56fa\u58f3\u4f53\uff0c\u7a79\u9876\u5c4b\u9876<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u5178\u578b\u50a8\u7f50\u5c3a\u5bf8<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u5927\u5bb9\u91cf\u5927\u6c14\u5b58\u50a8<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5927\u5bb9\u91cf\u52a0\u538b\u6216\u51b7\u85cf<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u5236\u9020\u4e0e\u5b89\u88c5<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u6807\u51c6\u73b0\u573a\u710a\u63a5<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u66f4\u4e25\u683c\u7684\u710a\u63a5\u548c\u63a7\u5236<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u5141\u8bb8\u4f7f\u7528\u7684\u6750\u6599<\/b><\/td>\n<td><a href=\"https:\/\/www.kdmsteel.com\/zh\/1066\u78b3\u94a2\/\"><b>1066\u78b3\u94a2<\/b><\/a><\/td>\n<td><span style=\"font-weight: 400;\">\u66f4\u5e7f\u6cdb\u7684\u4f4e\u6e29\u6750\u6599<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u68c0\u9a8c\u4e0e\u6d4b\u8bd5<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u6709\u9650\u7684\u653e\u5c04\u6210\u50cf<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u5e7f\u6cdb\u7684\u65e0\u635f\u68c0\u6d4b\u548c\u5c04\u7ebf\u7167\u76f8<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u5c4b\u9876\u548c\u5c01\u9876\u7c7b\u578b<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u56fa\u5b9a\u5c4b\u9876\u6216\u6d6e\u52a8\u5c4b\u9876<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u8010\u538b\u7a79\u9876<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u5e94\u7528\u53ca\u884c\u4e1a\u7528\u9014<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u70bc\u6cb9\u5382\u3001\u7801\u5934\u3001\u50a8\u6c34\u8bbe\u65bd<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u6db2\u5316\u5929\u7136\u6c14\u3001\u6db2\u5316\u77f3\u6cb9\u6c14\u3001\u77f3\u5316\u8bbe\u65bd<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"API_650_vs_API_620_%E2%80%93_Which_One_Is_Best\"><\/span><b>API 650 \u4e0e API 620 \u2013 \u54ea\u4e2a\u66f4\u597d\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49231\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-92.png\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-92.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-92-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-92-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-92-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u6ca1\u6709\u7edd\u5bf9\u201c\u6700\u4f73\u201d\u7684\u9009\u62e9\u3002API 650 \u975e\u5e38\u9002\u5408\u5728\u5ba4\u6e29\u548c\u5e38\u538b\u4e0b\u50a8\u5b58\u7269\u54c1\u3002\u5bf9\u4e8e\u538b\u529b\u6216\u6781\u4f4e\u6e29\u7684\u6db2\u4f53\uff0cAPI 620 \u662f\u66f4\u5b89\u5168\u7684\u9009\u62e9\u3002\u5408\u9002\u7684\u6807\u51c6\u53d6\u51b3\u4e8e\u4ea7\u54c1\u7c7b\u578b\u3001\u6e29\u5ea6\u3001\u538b\u529b\u548c\u957f\u671f\u4f7f\u7528\u6761\u4ef6\u3002\u5c3d\u65e9\u8bc4\u4f30\u53ef\u4ee5\u907f\u514d\u4ee3\u4ef7\u9ad8\u6602\u7684\u91cd\u65b0\u8bbe\u8ba1\u3002.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQs\"><\/span><b>\u5e38\u89c1\u95ee\u9898\u89e3\u7b54<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><b>API 650\u50a8\u7f50\u53ef\u4ee5\u7528\u4e8e\u4f4e\u6e29\u50a8\u5b58\u5417\uff1f<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\"> \u5b8c\u5168\u4e0d\u662f\u3002API 650\u50a8\u7f50\u5e76\u975e\u8bbe\u8ba1\u7528\u4e8e\u4f4e\u6e29\u73af\u5883\u3002\u5b83\u4eec\u53ea\u80fd\u5728\u6e29\u5ea6\u63a5\u8fd1\u5ba4\u6e29\u7684\u73af\u5883\u4e0b\u4f7f\u7528\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_API_620_tanks_work_when_the_pressure_outside_is_normal\"><\/span><b>API 620\u50a8\u7f50\u5728\u5916\u90e8\u538b\u529b\u6b63\u5e38\u7684\u60c5\u51b5\u4e0b\u53ef\u4ee5\u5de5\u4f5c\u5417\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">API 620\u50a8\u7f50\u53ef\u4ee5\u5728\u6b63\u5e38\u6c14\u538b\u4e0b\u5de5\u4f5c\uff0c\u4f46\u901a\u5e38\u5728\u9884\u8ba1\u5185\u90e8\u538b\u529b\u8f83\u9ad8\u65f6\u624d\u4f1a\u9009\u62e9\u4f7f\u7528\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"API_620_or_API_650_Which_costs_less\"><\/span><b>API 620 \u8fd8\u662f API 650\uff1f\u54ea\u4e2a\u66f4\u4fbf\u5b9c\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0cAPI 650\u50a8\u7f50\u4ef7\u683c\u66f4\u4f4e\u3002\u8fd9\u662f\u56e0\u4e3a\u5176\u8bbe\u8ba1\u3001\u6750\u6599\u548c\u68c0\u9a8c\u6807\u51c6\u76f8\u5bf9\u5bbd\u677e\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_it_possible_to_change_an_API_650_tank_to_an_API_620_tank\"><\/span><b>\u662f\u5426\u53ef\u4ee5\u5c06 API 650 \u50a8\u7f50\u66f4\u6362\u4e3a API 620 \u50a8\u7f50\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u4ece API 650 \u6539\u4e3a API 620 \u5e76\u4e0d\u5bb9\u6613\uff0c\u901a\u5e38\u9700\u8981\u5927\u91cf\u7684\u7ed3\u6784\u91cd\u65b0\u8bbe\u8ba1\u548c\u52a0\u56fa\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_are_inspections_done_for_API_620_and_API_650_the_same\"><\/span><b>API 620 \u548c API 650 \u7684\u68c0\u9a8c\u65b9\u6cd5\u6709\u4f55\u76f8\u540c\u4e4b\u5904\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u4e0d\uff0c\u6bcf\u9879\u6807\u51c6\u7684\u68c0\u9a8c\u89c4\u5219\u90fd\u4e0d\u540c\u3002API 620 \u9700\u8981\u66f4\u5168\u9762\u7684\u6d4b\u8bd5\uff0c\u4e14\u4e0d\u80fd\u5bf9\u4efb\u4f55\u90e8\u4ef6\u9020\u6210\u635f\u574f\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Can_API_620_and_API_650_be_used_together\"><\/span><b>API 620 \u548c API 650 \u53ef\u4ee5\u4e00\u8d77\u4f7f\u7528\u5417\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u4e0d\uff0c\u8fd9\u4e9b\u6807\u51c6\u4e0d\u80fd\u4e92\u76f8\u66ff\u4ee3\u3002\u9009\u62e9\u6807\u51c6\u65f6\uff0c\u8bbe\u8ba1\u538b\u529b\u548c\u5de5\u4f5c\u6e29\u5ea6\u624d\u662f\u552f\u4e00\u9700\u8981\u8003\u8651\u7684\u56e0\u7d20\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Do_radiography_tests_have_to_be_done_for_API_620\"><\/span><b>API 620 \u6807\u51c6\u662f\u5426\u5fc5\u987b\u8fdb\u884c\u5c04\u7ebf\u7167\u76f8\u6d4b\u8bd5\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u662f\u7684\uff0cAPI 620\u6807\u51c6\u8981\u6c42\u8fdb\u884c\u5c04\u7ebf\u7167\u76f8\u6d4b\u8bd5\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u8be5\u6807\u51c6\u6bd4API 650\u6807\u51c6\u66f4\u4e25\u683c\u3002.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Does_temperature_play_a_role_in_choosing_between_API_620_and_650\"><\/span><b>\u5728\u9009\u62e9 API 620 \u8fd8\u662f 650 \u65f6\uff0c\u6e29\u5ea6\u662f\u5426\u8d77\u4f5c\u7528\uff1f<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u662f\u7684\uff0c\u5929\u6c14\u662f\u9009\u62e9\u6807\u51c6\u65f6\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u56e0\u7d20\u3002\u9700\u8981\u5728\u4f4e\u6e29\u6216\u5bd2\u51b7\u73af\u5883\u4e0b\u5de5\u4f5c\u7684\u5e94\u7528\u901a\u5e38\u9700\u8981API 620\u6807\u51c6\u3002.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Get_Customized_Storage_Tanks_from_KDM_Steel\"><\/span><b>\u4eceKDM Steel\u83b7\u53d6\u5b9a\u5236\u50a8\u7f50<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-49232\" src=\"http:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-93.png\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-93.png 1280w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-93-150x84.png 150w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-93-768x432.png 768w, https:\/\/www.kdmsteel.com\/wp-content\/uploads\/2026\/02\/ARTICLE-93-18x10.png 18w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">\u6839\u636e\u60a8\u9879\u76ee\u7684\u9700\u6c42\uff0c,<\/span> <span style=\"font-weight: 400;\">KDM\u94a2\u94c1<\/span><span style=\"font-weight: 400;\"> \u53ef\u6309\u7167 API 650 \u6216 API 620 \u6807\u51c6\u5efa\u9020\u5b9a\u5236\u50a8\u7f50\u3002\u5982\u9700\u542f\u52a8\u60a8\u7684\u9879\u76ee\uff0c\u8bf7\u67e5\u770b\u6211\u4eec\u7684\u50a8\u7f50\u89e3\u51b3\u65b9\u6848\u3001\u94a2\u7ed3\u6784\u5236\u9020\u670d\u52a1\u3001\u8d28\u91cf\u63a7\u5236\u6d41\u7a0b\u670d\u52a1\u7b49\u3002<\/span><a href=\"https:\/\/www.kdmsteel.com\/zh\/\u63a5\u89e6\/\"> <b>\u8054\u7cfb\u6211\u4eec<\/b><\/a><span style=\"font-weight: 400;\"> \u7acb\u5373\u83b7\u53d6\u60a8\u7684\u4e13\u5c5e\u62a5\u4ef7\u3002.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>API 650 vs. API 620 is often the question that comes up when choosing a welded steel holding tank for oil, gas or chemical service. Both standards come from the American Petroleum Institute and tell you how to build a tank, but they are for different temperatures and pressures. Making the right choice will protect [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":49227,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"disabled","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-49226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>API 650 vs API 620 \u2013 Which One Should You Choose for Your Storage Tank? - KDM Steel<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kdmsteel.com\/zh\/api-650-\u4e0e-api-620-\u7684\u6bd4\u8f83\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"API 650 vs API 620 \u2013 Which One Should You Choose for Your Storage Tank? - KDM Steel\" \/>\n<meta property=\"og:description\" content=\"API 650 vs. API 620 is often the question that comes up when choosing a welded steel holding tank for oil, gas or chemical service. 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