CEMONT SMARTY 300 XL (W*) DC Welding Machines Inverter generator for industrial TIG welding on direct current. Generator for TIG welding of non-alloy, stainless steel Safe and easy striking on HF. Full control of the cycle (pre-gas, striking current, upward ramp, welding current, reduced current, downward ramp, crater filling, post-gas), pulse arc, spot-welding, and 2-s./4-s. welding.