Pipeline steel is the backbone of global energy transportation. From long-distance oil and gas transmission pipelines to urban distribution networks and offshore flowlines, these steel plates must deliver exceptional strength, low-temperature toughness, and reliable weldability under extreme pressure and harsh environmental conditions.

  At Cehe Steel, we supply a complete range of Chinese pipeline steel grades under GB/T 21237-2018 for petroleum and natural gas transmission. Our focus is not only on meeting specified minimum yield strength (SMYS), but also on practical performance — including DWTT shear area, impact toughness, field weldability, and dimensional stability for spiral or UOE pipe forming.

  China has become a major supplier of high-quality pipeline steel for onshore and offshore projects worldwide. We work directly with certified mills to deliver consistent quality, wide plate dimensions, and reliable export service. Whether you need L245/B for gathering lines, L360/X52 for trunk lines, or L450/X65 for high-pressure transmission, our team provides technical support and full traceability documentation.

  We understand that pipeline integrity is critical for safety and asset life. That's why we place equal importance on hydrogen-induced cracking (HIC) resistance, sour service capability when required, and certified mill test reports — not just the steel grade.

  In pipeline construction, material reliability is non-negotiable. The right steel ensures safe energy delivery for decades.

Steel Category Grade (L-Series) Quality Level Manufacturing Execution Standard
Pipeline Steel
(Line Pipe Wide Plate)
L210/A PSL1 GB/T 21237-2018
L245/B
L290/X42
L320/X46
L360/X52
L390/X56
L415/X60
L450/X65