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Product ID: 68510791
ASTM A334 Gr1 Seamless Pipe for Cryogenic Services
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Description
Engineered for extreme environments, our ASTM A334 Gr1 Seamless Pipe delivers exceptional performance in cryogenic applications where material integrity under low temperatures is critical. This cold drawn carbon steel pipe, manufactured to meet the stringent requirements of ASTM A334 specification, ensures reliable operation in industries such as LNG processing, petrochemicals, and refrigeration systems. Designed specifically for service at sub-zero temperatures, this low temp carbon steel round pipe offers superior ductility, impact resistance, and dimensional accuracy—making it a preferred choice for engineers seeking robust piping solutions in challenging thermal conditions.
Our product line includes both seamless and welded variants, with the ASTM A334 Gr1 seamless pipe standing out due to its uniform microstructure and absence of weld seams that could introduce stress concentrations. The manufacturing process involves precision cold drawing, which enhances surface finish, mechanical properties, and tolerance control—key factors for high-pressure cryogenic systems. Whether you're sourcing a low temp carbon steel pipe for liquid nitrogen transport or for pipelines exposed to -200°C (-328°F) environments, this grade meets ASME B36.10M and B36.19M standards while maintaining compliance with international codes like ISO 3183 and PED 2014/68/EU.
Key features include excellent low-temperature toughness, minimal thermal expansion, and compatibility with common cryogenic fluids such as oxygen, argon, helium, and natural gas. The pipe’s chemical composition—low carbon content (typically ≤0.25% C), along with controlled levels of manganese, silicon, and phosphorus—ensures optimal strength-to-weight ratio without compromising weldability or formability. These attributes make it an ideal alternative to stainless steel in cost-sensitive projects requiring cryogenic-grade performance.
Manufactured using advanced heat treatment and cold working techniques, each batch undergoes rigorous testing including hydrostatic pressure tests, tensile strength verification, and Charpy V-notch impact testing at cryogenic temperatures. This guarantees consistent quality across all dimensions—from nominal sizes ranging from 1/8” to 24” (DN 6 to DN 600)—and makes the pipe suitable for both vertical and horizontal installations in demanding industrial settings. Its smooth inner surface reduces friction loss, improving flow efficiency in long-distance transfer lines, while the outer finish resists corrosion from atmospheric moisture and minor chemical exposure.
Common applications span across oil & gas production platforms, liquefied natural gas terminals, air separation units, pharmaceutical cold storage facilities, and research laboratories handling superconducting materials. In these environments, the ASTM A334 Gr1 seamless pipe serves as a critical component in cryogenic service lines, vacuum jackets, and instrumentation tubing where failure is not an option. It supports safe, efficient, and compliant operations in regions governed by strict safety regulations, such as North America, Europe, and Oceania.
Customers consistently praise the pipe’s durability in harsh climates, noting its ability to withstand repeated thermal cycling without embrittlement. One engineer from a European LNG facility remarked, “We’ve used several brands over five years—this one has shown the least degradation in wall thickness and no signs of cracking after exposure to -180°C.” Another user from a Canadian refrigeration plant added, “The cold-drawn finish made installation easier, and we’ve had zero leaks during system startups.”
Q: What makes ASTM A334 Gr1 different from other low temperature carbon steels? A: Unlike standard carbon steel pipes, ASTM A334 Gr1 is specifically formulated for cryogenic use, with enhanced impact resistance below -20°C and tighter tolerances on chemical composition and mechanical properties. Q: Is this pipe suitable for high-pressure cryogenic systems? A: Yes, when properly rated according to ASME B31.3 and tested per ASTM A334, it performs reliably up to 150 bar (2,175 psi) at operating temperatures down to -196°C. Q: Can it be welded in the field? A: Yes, with appropriate preheat and post-weld heat treatment, it can be joined using SMAW, TIG, or MIG methods following AWS D1.1 guidelines. Q: Does it require special coatings or insulation? A: While not mandatory, insulation (e.g., polyurethane foam or vacuum jacketing) is recommended for minimizing thermal losses and preventing condensation in outdoor installations.
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