Hebei Huayang Steel Pipe Co., Ltd is one of the leading manufacturers and suppliers of erw carbon steel pipe dn400 api 5l x56 psl1 for gas transmission in China. Please feel free to buy cheap erw carbon steel pipe dn400 api 5l x56 psl1 for gas transmission from our factory. All customized products are with high quality and low price.
High-Yield DN400 Line Pipe for Reliable Gas Infrastructure
Huayang's DN400 ERW pipes utilize high-performance API 5L X56 PSL1 steel, delivering the critical yield strength required for high-pressure natural gas transmission.
|
Technical Parameter |
Specification Value |
|
Material Grade |
API 5L X56 (L390) PSL1 |
|
Yield Strength |
≥ 390 MPa (56,600 psi) |
|
Tensile Strength |
≥ 490 MPa (71,100 psi) |
|
Outer Diameter |
406.4 mm (DN400 / NPS 16) |
|
Weld Efficiency |
1.0 (High-Frequency ERW) |
This precision-welded conduit ensures structural stability and exceptional weld-zone integrity, making it the preferred choice for cross-country energy pipelines.
Advanced Metallurgical Integrity in Large-Diameter Energy Logistics
Engineered for mid-to-high pressure gas networks, Huayang's DN400 API 5L X56 PSL1 pipes feature a micro-alloyed carbon steel composition that optimizes the balance between tensile toughness and field weldability. Unlike smaller diameter alternatives, our 406.4mm ERW line pipes are processed through state-of-the-art high-frequency induction welding, followed by full-body ultrasonic inspection and hydro-testing to exceed API safety margins. The X56 chemistry, characterized by controlled manganese and carbon equivalents, provides superior resistance to stress-induced deformation during pipeline burial and thermal expansion. As a leading manufacturer, Huayang maintains rigorous quality control over the internal flash removal process, ensuring a smooth bore that minimizes friction loss and maximizes throughput efficiency in critical gas transmission corridors.
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