What are the main welding process of galvanized welded pipe?

Galvanized welded pipe is a light-weight thin-walled steel pipe with hollow circular cross section.

Galvanized welded pipes use narrow blanks to produce welded pipes with larger diameters, and can also produce welded pipes with different diameters using blanks of the same width. But compared with the straight galvanized welded pipe of the same length, the weld length is increased by 30 ~ 100%, and the production speed is lower.

Galvanized welded pipes with large or thick diameters are generally made directly from steel blanks, while small diameter thin-walled welded pipes only need to be directly welded through steel strips. Then, after simple polishing, brushing is sufficient. Therefore, the smaller-diameter weld pipes are mostly welded by straight seam, and the weld pipes with larger diameter are mostly spiral welded. Galvanized welded pipe has good comprehensive mechanical properties, good weldability, hot workability and corrosion resistance, and good low temperature toughness.