Custom Wholesale GB9711 Spiral Weld Steel Pipe Supplier

Not a trading company pretending to be one. We control production from raw material inspection all the way to final testing. That means consistent quality, stable supply, and pricing that makes sense for bulk orders. 13 spiral welded pipe production lines with an annual production capacity of 400000 tons can complete the entire process from steel coils to finished steel pipes in one factory, resulting in better product quality and faster service.

Wuzhou brand GB9711 spiral welded pipe has a complete range of qualifications, including business license, special equipment manufacturing license, ISO 9001, ISO 14001, ISO 45001, CNAS laboratory certification, API 5L certification, as well as NDT personnel holding TSG Z8001 equivalent qualifications, welder qualifications, repair welding qualifications, and samples. We give you full confidence in quality and qualifications, as well as technical support.

The forming angle and forming parameters of GB9711 spiral welded pipe are clearly recorded, and welding is carried out in accordance with the requirements of GB/T 9711-2023. WPS covers the actual production steel grade and wall thickness, and the welding material grade, drying, and requisition records are strictly used in accordance with the requirements of GB9711 standard. Real time monitoring and recording of internal and external welding are carried out, and the automatic welding seam tracking system is running normally. The pipe end groove angle and blunt edge meet the standards. Intermittent positioning welding should not be used for spiral submerged arc welded pipe groove, and repair welding is not allowed after cold expansion. Each pipe can be traced.