SAW weldied pipe Spiral welding or longitudinal weld O D: 400 mm -920 mmThickness: 6 mm- 50 mm SAW weldied pipeSpiral welding or longitudinal weld Large Diameter Carbon Steel Pipe(Welded)Products:All sort of steel pipes are availableStandard:GB, API, ASTM, BS, DIN, EN, JIS, ISO, UNIMaterial:321, 304, 304L, 316, 316L, 310S, 317L, 347, 347H, 304H, 321H, 304LN Size 4”-84” Length1-12Applications: ...