there are two types of galvanized seamless steel pipes (gi pipe), hot-dip galvanizing (hot-dip galvanizing) and cold-dip galvanizing (electro-galvanizing). hot-dip galvanizing has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. however,

304/304l is a versatile stainless steel that is widely used in manufacturing the equipment and components that require good overall performance (corrosion resistance and formability). 304 stainless steel is produced in accordance with the united states astm standard stainless steel a grade. 304

316/316l stainless steel tube is a hollow long circular steel, mainly used in petroleum, chemical, medical, food, light industry, mechanical instruments and other industrial pipelines and mechanical structural components. in addition, the bending, torsion strength of the same, the lighter weigh

what is galvanized seamless steel pipe? galvanized seamless steel pipe (gi seamless pipe) refers to galvanizing the surface of seamless steel pipe. after the api seamless pipe is pickled, the surface is coated with a layer of zinc, so it is more corrosion-resistant, not easy to rust, and can prolong

there are three main ways to identify seamless pipes (smls) and welded pipes :1. metallographic methodmetallographic method is one of the main methods to distinguish welded pipes and seamless pipes. high-frequency resistance welded pipe (erw) does not add welding materials, so the wel