Overview
ASTM low temperature steel pipes are engineered for environments where temperatures plummet below -45°C, such as LNG facilities or Arctic oil pipelines. These pipes adhere to ASTM standards like A333 (seamless/welded) and A350 (forgings), ensuring material consistency and performance. Their primary alloys include nickel, manganese, and chromium, which enhance ductility and prevent brittle fracture. Industries reliant on cryogenics, such as energy and chemicals, prioritize these pipes for their reliability in extreme conditions.
Structure and Working Principle
The pipes feature a fine-grained microstructure achieved through controlled rolling and heat treatment, which minimizes crack propagation under stress. Their wall thickness is optimized to balance pressure resistance and thermal conductivity. A key design aspect is the inclusion of notch-tough materials, tested via Charpy V-notch tests to confirm energy absorption capacity at target temperatures. Welded joints undergo post-weld heat treatment (PWHT) to relieve residual stresses.
Key Features
Impact toughness is the standout property, with Charpy values often exceeding 20J at -196°C for grades like A333 Gr. 3. The pipes also resist hydrogen-induced cracking (HIC) and sulfide stress corrosion (SSC). Surface treatments like galvanization or epoxy coating may be applied for additional corrosion protection. Dimensional tolerances follow ASME B36.10M, ensuring compatibility with standard fittings.
Application Areas
LNG terminals use these pipes for transfer lines and storage tanks, while petrochemical plants deploy them in ethylene cracker units. They’re also common in aerospace for liquid oxygen transport. Offshore platforms in cold regions rely on ASTM A350 LF2 flanges and pipes for structural integrity. Food processing industries utilize them for ammonia refrigeration systems.
Maintenance and Precautions
Regular ultrasonic testing (UT) is recommended to detect internal flaws, especially after thermal cycling. Avoid sudden temperature changes during operation to prevent thermal fatigue. Storage should be in moisture-controlled areas to prevent rust. Welding requires low-hydrogen electrodes and preheating to 100–150°C, followed by PWHT for critical applications.
B2B Procurement Guide
Specify the ASTM grade (e.g., A333 Gr. 6 for -45°C service) and supplementary requirements like NACE MR0175 for sour service. Request mill test reports (MTRs) validating chemical composition and mechanical properties. Bulk orders (20+ tons) may attract 5–10% discounts. Lead times vary from 4 weeks (stock items) to 12 weeks (custom sizes). Consider suppliers with ISO 9001 and API Q1 certifications.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：高温管、锅炉管、厚壁无缝管、低温管、无缝钢管、厚壁钢管、低合金钢管、化肥专用管、地热井套管、石油裂化管、冷库专用无缝管、高压合金无缝管
- 主营：欧标方管、欧标无缝管、20G锅炉管、美标无缝管、无缝钢管、A106无缝钢管、高压锅炉管、Q235B镀锌角钢、Q235B镀锌槽钢、国标槽钢、Q355B工字钢、合金板、热轧板、冷轧卷、容器板、电梯构件、冷冻设备、冷轧钢板、冷轧盒板、合金钢板、汽车大梁板、冷轧厚钢板、冶金设备用板、钢构建筑用板
- 主营：中低压锅炉管、高压锅炉管、石油裂化管、无缝钢管、合金钢管、冷拔无缝钢管、镀锌钢管、方矩管
- 主营：美标无缝钢管、耐低温无缝钢管、无缝管、石油裂化管
- 主营：高压锅炉管、方管、P91 P92合金管、高压无缝钢管、精密钢管、管线钢管、冷拔无缝钢管、非标钢管、厚壁钢管、美标无缝钢管、高温合金钢管、高温钢管、低温无缝钢管、美标低温管、厚壁无缝钢管、精轧退火钢管、热镀锌钢管、架子钢管、锅炉管、石油裂化管、高压化肥管、小口径冷拔管、化工管道、石油燃气管道、直缝埋弧焊管
- 主营：角钢a36、a36船板、a36方管、耐候板、A36无缝钢管、20crnimoa、中厚板、矩形管、锅炉板、dnv船板、锅炉门、化肥管、34crnimo6、低合金、a32钢板、生物质、sa106gr.b、锅炉管、容器板、无缝方、方炉门、钢板保、40crnimoa、无缝管、调质钢
- 主营：无缝钢管、Q345B无缝钢管、美标无缝钢管、球墨铸铁管、柔性铸铁管、石油裂化管
- 主营：矩形管、椭圆管、镀锌管、低温管、耐磨管、无缝管、方矩管、穿线管、钢结构、工字钢、热轧管、管线管、螺旋钢、铁方管、立柱管、标型钢、方形管、薄壁管、螺旋管、相贯线、化肥管、装饰管、焊接管、管线板、换热管
- 主营：无缝管、流体管、高压锅炉管、镀锌钢管、无缝钢管、精轧钢管、小口径钢管、精密钢管、热浸镀锌钢管、美标无缝钢管、内外涂塑钢管、保温钢管、等边角钢、镀锌工字钢、镀锌扁钢、中厚板、冷拉方钢、天然气用管线管、管线管、温室大棚管、镀锌H型钢、镀锌方管、镀锌椭圆管、螺旋管、螺旋焊管
- 主营：不锈钢板、方管、铅板、无缝钢管、镀锌钢管、不锈钢管、合金钢管、铅门、不锈钢花纹板、高压锅炉管
- 主营：无缝管、方矩管、石油套管、方钢管、q355钢管、镀锌钢管、无缝钢管、低温容器板、大口径无缝钢管、无缝方管、槽钢、H型钢、镀锌方管、Q235B镀锌管、Q355B方管、镀锌管、镀锌角钢、镀锌槽钢、镀锌H型钢、镀锌工字钢、镀锌花纹钢板、镀锌板、Q355D方管、镀锌直缝焊管、镀锌花纹板
- 主营：高压锅炉管、无缝方矩管、无缝方管、厚壁无缝钢管零切、异型管、螺旋管、镀锌花纹板
- 主营：不锈钢无缝管、不锈钢焊管、不锈钢换热管、脱脂不锈钢管、流体不锈钢管、精密不锈钢管、卡套不锈钢管、电解不锈钢管、BA不锈钢管、304不锈钢管、316L不锈钢管、2205不锈钢管、310S不锈钢管、低温不锈钢管、高压不锈钢管、中低压不锈钢管、薄壁不锈钢管、厚壁不锈钢管、抛光不锈钢管、食品级不锈钢管、不锈钢卫生管、不锈钢工业管、不锈钢水管、不锈钢仪表管
- 主营：无缝管、锅炉管、镀锌管、无缝钢管、合金钢管、美标钢管、S355JR无缝钢管、热镀锌钢管、Q235B镀锌钢管、高压合金钢管、方管、镀锌方管、输送管道、钢板、合金板、中厚板、角钢、槽钢、工字钢、花纹板、Q355E方管、Q355C角钢、中低压锅炉、15CrMoG无缝钢、20CrMo圆钢
- 主营：合金管、冷拔管、3087低压锅炉管、无缝钢管、ND 钢管、10crmoal 无缝钢管、低温管、镀锌螺旋钢管、Q345B无缝钢管、20G无缝钢管、Q355B热镀锌钢管、精密钢管、高压锅炉管、石油裂化管、管线管、中厚板、42CrMo钢板、镀锌带方管、镀锌无缝管、直缝焊管、螺旋焊管、锅炉无缝管、石油天燃气管道