JIANGSU CHINA STEEL UNION INDUSTRIAL CO.,LTD.
江苏中钢联合实业有限公司
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Seamless SS High Pressure Pipe 304L 3mm Wall, EN 10312, Cryogenic, LNG Transport
Seamless Stainless Steel Pipes 304L (3mm Wall Thickness) by Jiangsu China Steel Union Industrial Co., Ltd are engineered for high-pressure cryogenic applications, including liquefied natural gas (LNG) transport, aerospace fuel systems, and ultra-low-temperature storage. Compliant with EN 10312, these seamless pipes combine exceptional toughness at temperatures as low as **-196°C** with superior resistance to thermal stress and embrittlement. The 304L grade, with controlled carbon content (≤0.03%) and stabilized austenitic structure, prevents carbide precipitation during welding, ensuring leak-proof integrity in LNG tankers, cryogenic valves, and vacuum-insulated pipelines. The 3mm wall thickness optimizes strength-to-weight ratios for high-pressure (up to 150 bar) and low-temperature environments.
| Parameter | Details |
|---|---|
| Material | 304L Stainless Steel (UNS S30403 / EN 10312) |
| Element Composition | Cr: 18–20%, Ni: 8–12%, C: ≤0.03%, Mn: ≤2%, Si: ≤1%, P: ≤0.045%, S: ≤0.03%, Fe: Balance |
| Dimensions | OD: 10–300mm (±0.5mm), Wall Thickness: 3mm (±0.1mm), Length: 6–12m (Custom Coiled Available) |
| Certifications | EN 10312, ASME B36.19, ISO 21028 (Cryogenic Toughness), PED 2014/68/EU, TÜV SÜD |
| Mechanical Properties | Tensile Strength: ≥485 MPa Yield Strength: ≥170 MPa Elongation: ≥40% Charpy Impact (-196°C): ≥80 J |
| Pressure Rating | 150 bar at -196°C (Hydrostatic Tested) |
| Surface Finish | Annealed & Pickled, Electropolished (Ra ≤0.4µm), or Bright Annealed (BA) |
| Applications | LNG tanker pipelines, cryogenic storage tanks, liquid helium transfer lines, vacuum-jacketed systems |
Jiangsu China Steel Union Industrial Co., Ltd delivers EN 10312-certified 304L stainless steel pipes that redefine safety and efficiency in cryogenic engineering, offering unmatched performance for global energy, aerospace, and healthcare industries.
FAQ
Q1. Where is your factory ?
A1: Our company's processing center is located in Wuxi, Jiangsu, China.
Which is well equipped with kinds of machines, such as laser cutting machine,mirror polishing machine and so on.We can provide a wide range of personalized services according to the customers' needs.
Q2. What are your company's main products ?
A2: Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, channel, etc.
Q3. How do you control quality ?
A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.
Q4. What are the advantages of your company ?
A4: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.
Q5. How many coutries you already exported ?
A5: Exported to more than 50 countries mainly from America, , UK, Kuwait, Egypt, , Turkey, Jordan,
India, etc.
Q6. Can you provide sample ?
A6: Small samples in store and can provide the samples for free.
Customized samples will take about 5-7days.