This longitudinal seam automatic welding machine is especially used for flat butt joint, transversal joint and square tube butt joint outside the cylinder.

Key tape compaction, even and reliable, preventing heat distortion in the welding.

Different welding seam back protection lining and molding groove, guaranteeing welding penetration, single side welding and double-side formation.

According to welding techniques, TLG, CO2, MIG, plasma welding can be selected.

Length of work piece: 200-300mm, thickness: 0.5-5mm.