At present, the main production processes of large-diameter steel pipes in my country are hot-rolled large-diameter steel pipes and hot-expanded large-diameter steel pipes. The largest specifications of hot-expanded seamless steel pipes are 325 mm-1220 mm and the thickest is 120mm. Hot-expanded seam

Straight seam steel pipe is a steel pipe with the weld parallel to the longitudinal direction of the steel pipe. It is usually divided into metric electric welded steel pipe, electric welded thin-walled pipe, transformer cooling oil pipe, etc. The production process of straight seam welded pipe is s

Chemical properties of high-frequency welded steel pipes: room temperature mechanical properties, high-temperature mechanical properties, low-temperature properties, and corrosion resistance. The physical and chemical properties of high-frequency welded steel pipes mainly depend on the chemical comp

1. Argon arc welding is a welding technology that uses argon as a shielding gas. It is also called argon gas-shielded welding. It is to pass argon shielding gas around the arc welding to isolate the air outside the welding area to prevent oxidation of the welding area. Argon arc welding technology i