Hot-dip galvanized pipes are a type of metal pipe widely used in industries such as construction, machinery, and chemical engineering, featuring excellent corrosion resistance. However, during use, appropriate protective measures and anti-corrosion treatments still need to be taken to extend their service life.

The differences between hot-dip galvanizing and cold galvanizing in terms of process, finished products and applications.

Galvanized seamless steel pipe, as a pipe with high strength and excellent corrosion resistance, is widely used in many fields such as industry, construction, energy and transportation, and has become an indispensable part of modern engineering materials.

At present, pipelines are mainly used in long-distance oil and gas transportation, and the pipe steel pipes used in long-distance pipelines are mainly spiral submerged arc welded steel pipes and straight seam double-sided submerged arc welded steel pipes. Because the spiral submerged arc welded pipe is made of strip steel, the wall thickness is limited, and the improvement of steel grade is limited by the heat treatment of the material. In addition, the spiral submerged arc welding pipe has some insurmountable shortcomings, such as long weld, large residual stress, and poor reliability of the weld. With the increasing demand for oil and gas conveying steel pipes, they are no longer used in densely populated areas and areas with high reliability requirements, and spiral welded pipes are gradually being replaced by straight seam welded pipes.