ERW Steel Pipe DN350 ASTM A53 GR.B SCH80 For Medium Pressure Fluid Transport

ASTM A53 Gr.B is a widely used carbon steel grade offering a minimum yield strength of approximately 240 MPa and tensile strength ranging from about 415 to 550 MPa. The chemical composition is controlled with carbon generally below 0.30 percent and manganese content up to about 1.20 percent, ensuring good weldability and stable mechanical properties. The SCH80 wall thickness significantly improves resistance to internal pressure, mechanical impact, and long-term operational stress, making it suitable for more demanding fluid transport conditions.

Huayang Steel Pipe manufactures DN350 ERW pipes using advanced high-frequency electric resistance welding technology, ensuring a continuous and uniform weld seam with consistent metallurgical properties. Precision forming and sizing processes guarantee accurate outer diameter and stable wall thickness throughout the pipe body. Each pipe undergoes hydrostatic pressure testing, weld seam ultrasonic inspection, and dimensional verification. For medium-pressure applications, additional surface treatments such as galvanizing or anti-corrosion coatings can be applied to enhance durability and extend service life.