Detailed Product Description galvanized tubeHot dipped galvanized steel tube Spec:Q195,Q215,Q235,Q345,ST37.4, ST35, ST45, ST52, ... , Gr.A/B Hot dipped galvanized steel tube according to BS1139Carbon seamless welded steel tube according to ASTM A53/A106/APL5L Gr ... remove the ferric oxide, and then the steel pipes are dried and dipped into a melted zinc pot. The melted zinc ...