LSAW Steel Pipe Pipe ASTM A672 B60 Structural Pipe

ASTM A672 Grade B60 is produced from pressure vessel quality carbon steel plate, typically corresponding to tensile strength around 415 MPa minimum, with yield strength generally not less than 240 MPa depending on the base plate specification. Chemical composition is strictly controlled, with carbon typically ≤0.25% and low sulfur and phosphorus limits to ensure weldability and fracture resistance. Normalizing heat treatment is applied to refine grain structure and improve uniform mechanical performance across the weld and base metal.

At Huayang, plates are formed through JCOE technology and welded by double-sided submerged arc welding to guarantee full penetration and consistent seam geometry. Radiographic examination of welds can be performed according to project class requirements, along with hydrostatic testing and mechanical verification. Dimensional tolerances are maintained within ASTM limits, ensuring reliable structural performance in industrial frames, utility pipelines, and moderate-pressure service systems.