The quality of galvanized steel pipe can vary depending on several factors, including the manufacturing process, the quality of the raw materials used, and the level of quality control during production. Galvanized steel pipe is made by coating regular carbon steel pipe with a layer of zinc to protect it from corrosion. The zinc coating provides a barrier against moisture and other corrosive elements, extending the lifespan of the pipe. The quality of galvanized steel pipe is determined by the thickness and consistency of the zinc coating. A thicker coating generally provides better protection against corrosion. Additionally, the coating should be uniform and free from defects such as bare spots or excessive build-up. Steel grades: Q215A; Q215B; Q235A; Q235B. Test pressure value/Mpa: D10.2-168.3mm is 3Mpa; D177.8-323.9mm is 5Mpa Current national standard Galvanized steel tube is a kind of steel pipe with a circular cross-section. It…