LNG Cylinders For Sale
- High-grade stainless steel for inner vessel and piping
- Impact resistance carbon steel outer vessel and Al-Mg-Si aluminum alloy for maritime/coastal use
- Robotic TIG welding with a 99.5% pass rate
- -196°C to +55°C operating temperature
- Can handle extreme temperature -50°C up to +160°C that cryogenic gas needs
- Kept under 0.3% daily evaporation rate
- Vacuum insulation with perlite or optional multi-layer insulation
- Low thermal conductivity of \le 0.001 W/(m·K)
- Up to 17 bar (g) design pressure with higher ratings available
- Built to meet EN 12862, EN 13110, and EN 13458
KDMSTEEL as Your Trusted LNG Cylinder Supplier and Manufacturer
When you partner with us at KDMSTEEL, you are investing in LNG cylinders that are built to outlast your fleet, with some of our units that are still in active service after 60 years.
With KDMSTEEL, you get a range of sizes and capacities from 90 Liters to 1,000 Liters for vehicles, and 70,000 Liters for larger industrial tanks, all featuring our industry-leading vacuum insulation that holds your fuel stable for five days.
Whether you choose our lightweight, rust-proof Al-Mg-Si aluminum alloy for marine use or our rugged stainless steel builds, every LNG cylinder is robotic welded to a 99.5% success rate and can handle extreme temperatures from -196°C to +160°C.
You can stay confident in your compliance with KDMSTEEL, because our LNG cylinders meet strict EN 12862 and TPED standards and carry the TÜV SÜD “π” safety mark.
By combining high energy density with a design that requires almost no maintenance, we can help you lower your total cost of ownership while keeping your operations running safely and cleanly.
Send us your inquiries and get the latest quote as of today!
Top Picks KDMSTEEL LNG Cylinders for Your Liquid Natural Gas Storage
Offers a 2.3 MPa working pressure, compact vertical design, full inspection reports, and you get accurate temperature control, low noise operation, and long service life handling LNG.
With this aluminum LNG cylinder, you get a durable gray finish, 2 kg weight, and OEM/ODM customization support to fit your application.
This LNG cylinder has a seamless 10 Liter aluminum alloy body with 150 bar working pressure and 250 bar test pressure, and offers a strong wall thickness, compact size, and reliable performance.
This cylinder has a capacity option from 1 Liter to 40 Liter, 150 bar working pressure, and 225 bar test pressure, made from AL6061 aluminum and it is TPED/PED certified.
This cylinder is made from high-quality stainless steel and offers 175 Liters nominal volume with 164 Liters effective capacity and stable working pressure of 1.37 MPa.
This LNG cylinder has a strong stainless steel body and a maximum working pressure of 1.59 MPa, it offers a compact dimensions and a 100 kg weight.
You get a large 175 Liters capacity, 1.4 MPa max working pressure, and a polished pressure vessel with pump for stable operation.
This LNG cylinder has many volume options up to 500 Liters, 230 bar working pressure, and a 2.3 MPa design pressure built to GB, ISO, EN, and ASME standards.
The Production Process: How KDMSTEEL Build Reliability
At KDMSTEEL, we do not just “make” these LNG cylinders, we engineer them using an automated production line that removes human error from the equation. Here is a look at “how” behind the ‘what”.
We have moved the welding joints to the safest parts of the cylinder and use robotic TIG welding, and this ensures a qualification rate of over 95%. The roundness error of our inner liners are kept under 0.5mm, and when the fit is this tight, the LNG cylinder is stronger.
Before we even strike an arc, KDMSTEEL use ANSYS simulation to create a “Digital Twin” of the cylinder, we simulate extreme stress and low-temperature impacts to see where the metal might fatigue, and this allows us to optimize the design for a full life cycle of more than 15,000 pressure cycles.
KDMSTEEL uses “getters”, special materials like zirconium and aluminum, inside the tanklayer. These act like a chemical sponge, soaking up any trace gases that might outgas from the metal over time, and this ensures that your insulation stays “super” for years and not just months.
Through our MES (Manufacturing Execution System), KDMSTEEL tracks every single welding parameter and inspection datum for every individual cylinder. If you ever have a question about a specific unit in your fleet, we have the digital DNA of that LNG cylinder on file.
Engineering for the Extremes: -196°C to +160°C
LNG is a cryogenic liquid, and to keep it in that state, it has to stay incredibly cold, roughly -162°C. KDMSTEEL LNG cylinders are engineered to handle a temperature range from -196°C all the way up to 55°C for standard operations. Some of our specialized Al-Mg-Si alloys can even withstand hot air up to +160°C or extreme cooling down to -50°C for non cryogenic gas storage.
KDMSTEEL “Bottle-Within-a-Bottle” LNG Cylinder Design
To maintain the exact temperatures, KDMSTEEL uses a “bottle-within-a-bottle” design. Our LNG cylinders have inner vessels made of high-grade stainless steel and Al-Mg-Si aluminum alloy to handle the liquid feel. The outer vessel is made out of carbon steel, though we use stainless steel at strategic points like lifting lugs, legs, and nozzle openings to prevent rust and to extend the LNG cylinder’s life. For the installation, we use vacuum installation combined with perlite or multi-layer super insulation (MLI), our MLI has a reflectivity of over 95% and this technology is so efficient that a fully charged cylinder can maintain its temperature for five days without the pressure rising.
Why Partner With KDMSTEEL: The Standards You Can Trust
KDMSTEEL LNG cylinders are manufactured to meet EN 12862 and 13110 standards, and they strictly follow the 2010/35/EU TPED and ADR/RD Directives. Every cylinder we produce that meets these marks is certified by TÜV SÜD and carries the “π” (pi) mark. Furthermore, our time management facility is ISO 9001:2015 certified.
When you buy LNG cylinders from us, you are getting a product that has passed the Code KGS AC 416 inspection items. We do not cut corners because we know that a single failure is one too many. In fact, we have cylinders that were manufactured over 60 years ago that are still in active service today and that is the kind of ROI we aim for.
The versatility of our design means that they fit into almost any industrial ecosystem.
- Heavy-Duty Transportation: Because of the energy density we mentioned earlier, your drivers can go further between fill-ups compared to CNG. KDMSTEEL LNG cylinders are designed for the vibration and physical stress of the road.
- Marine and Offshore: KDMSTEEL uses specialized aluminum LNG cylinders that can thrive in marine industry, it resists corrosive sea spray that destroys other equipment.
- Off-Grid Power and Industrial Processes
With our LNG cylinders, you can store large amounts of fuel on-site for power generation or industrial heating with a very small footprint.
As a business owner, you are likely feeling the squeeze from both sides: you need to save money, and you need to go green. KDMSTEEL LNG cylinders can help you do both.
- Recyclability: Our aluminum and steel components are 100% recyclable, and when a cylinder finally reaches the end of its multi-decade life, it does not end up in a land fill.
- Emission Reduction: Burning KDMSTEEL LNG cylinders produces fewer pollutants and greenhouse gases than diesel or heavy fuel oil. This helps you meet ESG goals and avoid “green taxes” in many jurisdictions.
- Fuel Savings. While the initial setup for LNG can be an investment, the lower cost of the fuel and the increased efficiency of the system mean the equipment often pays for itself in a remarkably short window.
KDMSTEEL LNG Cylinders Technical Specifications at a Glance
If you are comparing these for a specific project, here are the hard numbers you need for your engineers.
| Feature | Aluminum (Al-Mg-Si Alloy) | Stainless/Carbon Steel |
| Best For | Marine, Coastal, Mobile Fleets | Stationary Storage, High-Pressure Industrial |
| Corrosion Resistance | Excellent (No painting needed) | Moderate to Good (Requires coating) |
| Weight | Very Low | High |
| Spark Risk | Non-sparking | Potential for sparks |
| Maintenance Cost | Low (Set and forget) | Moderate (Requires inspections/paint) |
| Max Heat Tolerance | Up to +160°C | Higher, but rarely needed for LNG |
| Recyclability | 100% (High scrap value) | 100% |
The Core Comparison: Aluminum (Al-Mg-Si) vs. Stainless Steel
For you to choose the right LNG cylinder, you have to look at where your equipment lives. If your trucks are driving through salted winter roads or your ships are sitting in salt spray, your material choice is the difference between a 20-year asset and a 5-year headache.
1. Weight and Your Bottom Line
In transportation, weight is money, and every kilogram of dead weight in your fuel system is a kilogram you can not carry in cargo.
- Aluminum: Our special Al-Mg-Si alloy is lighter and this lower tare weight allows for higher payloads and better fuel efficiency for the vehicle itself. If you operate a large fleet, these small savings per truck add up to thousands of dollars in fuel and extra cargo capacity over a year.
- Stainless Steel: While this material is strong, steel is heavy, and it adds bulk to your frame, which might be fine for a stationary power plant, but it is a drawback for long-haul trucking.
2. The Battle Against Corrosion
This is where the choice usually becomes clear for most business owners.
- The Aluminum Advantage: Aluminum forms a natural oxide layer that protects it, and in salty, humid, or coastal environments, our aluminum cylinders outperform steel by a wide margin. You do not have to paint them, and you do not have to worry about “pitting” or surface rust, and this eliminates the cost of repainting and the downtime required for corrosion inspections.
- The Steel Challenge: Even high-quality carbon steel or stainless steel can struggle in marine environments without constant care, and if the paint chips, the clock starts ticking on rust. For ships and seaside operations, aluminum is a standard for a reason.
3. Temperature Resilience
Both materials are built to handle the cold, but they react differently to heat.
- Cryogenic Performance: Both handle the -196°C required for LNG. However, our aluminum alloy is specifically designed to remain stable down to -50°C in standard gas applications and can survive heat spikes up to +160°C without losing structural integrity.
- Thermal Conductivity: Aluminum dissipates heat faster and in certain processes, this can be an advantage for maintaining stable internal temperatures when combined with our vacuum insulation.
4. Safety: Sparks and Impacts
In a high-stake environment, the risk of a spark can not be ignored.
- Aluminum: It is a “non-sparking” material, and if a tool drops or an impact occurs, the risk of an ignition is virtually zero.
- Steel: Can produce sparks upon heavy impact, which requires more stringent safety protocols in volatile environments.
Yes, of course! As we offer different diameters and a wide range of capacities to fit most industrial and transport needs. If you have a unique setup, our engineers can customize the design to make sure it fits your specific equipment perfectly.
KDMSTEEL designed our LNG cylinders with an easy-repair structure so your team can swap out valves and fittings quickly.
No, not at all, because we use a specific grade of stainless steel for the inner vessel that is designed to stay “tough” at -196°C.
You will see a weight reduction of 30% to 50% compared to other steel cylinders.
Yes, our Al-Mg-Si alloy is incredibly versatile and can be used for everything from industrial refrigerants to LPG.
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