LSAW Steel Pipe Pipe Piling DN800

For DN800 pipe piling, commonly used materials such as Q355B or S355 provide a minimum yield strength of 355 MPa and tensile strength typically between 470–630 MPa. The controlled carbon content (generally ≤0.24%) ensures good weldability and low cracking sensitivity during field splicing. Thick-wall configurations up to 40 mm enhance buckling resistance and bearing capacity under heavy vertical loads.

Huayang adopts JCOE or UOE forming to maintain precise roundness and uniform wall thickness in large diameters. Double-sided submerged arc welding ensures deep penetration and consistent weld seam geometry. Each pipe undergoes ultrasonic weld inspection and dimensional verification, with optional hydrostatic testing when required. Strict control of straightness and end preparation guarantees efficient site welding and reliable long-term performance in deep foundation and marine piling applications.