Galvanized steel pipe connection method: threaded, welded.Roll groove connection(1) Cracking of roll groove weld1. Smooth the inner wall welding ribs of the pressure groove part of the nozzle to reduce the resistance of the rolling groove.2. Adjust the axis of steel pipe and rolling groove equipment

Classification of galvanized steel pipeGalvanized steel pipe is divided into cold galvanized pipe and hot galvanized pipeGalvanized steel:Hot-dip galvanized steel pipe is a kind of aluminum alloy layer produced by the reflection of molten metal material and iron base material. Therefore, hot-dip gal