Spiral steel pipe is a kind of steel widely used in construction and other industries. It is a spiral seam steel pipe, which is made of rolled steel strip as raw material, often warm extrusion forming, and welded by automatic double wire double-sided submerged arc welding process. Spiral steel pipe is mainly used in water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction.
Spiral steel pipe is used for liquid transportation: water supply and drainage. For gas transmission: gas, steam, LPG. For structural use: as pile driving pipe, as bridge; for wharf, road, building structure, etc. Spiral steel pipe plays a very important role in the transportation of gas.
Spiral seam submerged arc welded steel pipe for pressure fluid transmission is mainly used for oil and gas pipelines; spiral seam high frequency welded steel pipe for pressure fluid transmission is welded by high frequency lap welding method, and spiral seam high frequency welded steel pipe for pressure fluid transmission. The spiral steel pipe has strong pressure bearing capacity, good plasticity, and is easy to be welded and processed; the spiral seam submerged arc welded steel pipe for general low-pressure fluid transmission is made by double-sided automatic submerged arc welding or single-sided welding for general low-pressure fluid transmission such as water, gas, air and steam.