AC DC Aluminum TIG Welder 200A Pulse Tig /Stick/Arc 110V/220V TIG Welder Machine Posted on January 19, 2024 by admin Equipped with AC Square Wave TIG, AC pulse TIG, DC TIG, DC Pulse TIG, Stick, and argon arc spot welding (DC, pulse or AC). TIG (Tungsten Inert Gas) – Shielded arc welding with inert/inactive gases such as Argon 4.6 (99.996%).