electric resistance welding pipe online manufacture

ASTM Standard Hot Dipped Galvanized Steel Tube Galvanized seamless tube is divided into cold-plated steel seamless tube and hot dip seamless tube. Hot Dip Seamless Tube : The seamless tube is to make the molten ... Read More

Cold Dipped Galvanized Steel Tube Galvanized seamless tube is divided into cold-plated steel seamless tube and hot dip seamless tube. Cold-Plated Seamless Tube : Cold galvanized, electric-galvanized, galvanized ... Read More