HFH Automatic Submerged Arc Welding Line 1.Using Submerged Arc Welding 2.Non-pollution,non-luminous 3.smooth surface HFH Automatic Submerged Arc Welding LineDescription:1.This machine composed by main machine head , tractive body and feeding shelf. 2.Tractive body was moved by collet in small vehicle nipping the steel poles collet.When the small vehicle moved,drived steel pole,from small collet ...