A pipe in which the weld is helically distributed relative to the axis of the pipe body. Mainly used for conveying pipes, pipe piles and some structural pipes. Product specifications: outer diameter 300～3660mm, wall thickness 3.2～25.4mm.

Welded steel pipes refer to steel pipes with seams on the surface that are welded by steel strips or steel plates that are bent into round or square shapes. The blanks used for welded steel pipes are steel plates or strip steels.T-welded steel pipes have strong corrosion resistance in acidic environ

Demand for the steel industry in the second half of the year is not pessimisticThe relevant person in charge of the China Iron and Steel Association stated that the World Bank’s June 7 report once again lowered the global economy and the economic growth expectations of major developed countries

6. GB9948-1988 (seamless steel pipe for petroleum cracking). Mainly used in boilers, heat exchangers and fluid pipelines of petroleum smelters. Its representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb, etc.7. Steel pipes for geological drilling (YB235-70) are steel pipes used for core drilli