What is the manufacturing process of large diameter spiral welded pipe

Large diameter spiral welded pipe (SSAW pipe) refers to the spiral steel pipe with relatively large diameter, which is generally required to be more than 1000mm.

The manufacturing process of large diameter spiral welded pipe: firstly, the steel strip is bent into shape, and then welded together to make a large-diameter spiral welded pipe of specified size. After being processed into a pipe, hydrostatic test, bending, flattening and other tests shall be carried out, and the internal steel support of large diameter spiral welded pipe can be made according to customer requirements. The spiral welded pipe can also be coated inside for corrosion protection.

The main application of large diameter spiral welded pipe: underground fluid pipeline for municipal construction, chemical industry, agriculture and forestry irrigation, etc.