Mineral Extraction Industry ERW Steel Pipe DN400

In mineral extraction operations, DN400 ERW pipes are frequently produced using Q355B or API 5L L360 grade steel, both offering strong mechanical performance and good weldability. Q355B steel provides a minimum yield strength of approximately 355 MPa with tensile strength typically ranging from 470 to 630 MPa, allowing the pipeline to withstand internal pressure and mechanical stress during slurry transportation. The chemical composition generally limits carbon below about 0.20 percent, while manganese content near 1.60 percent contributes to improved toughness and structural stability.

Huayang Steel Pipe manufactures these pipes using advanced high frequency electric resistance welding technology, ensuring a uniform longitudinal weld seam and precise dimensional control. Each pipe undergoes hydrostatic pressure testing, weld seam ultrasonic inspection, and dimensional verification to ensure reliability in demanding mining environments. For mineral slurry pipelines, additional wear resistant linings or anti corrosion coatings can be applied to improve resistance to abrasion and extend the operational lifespan of the pipeline system.