4 National System Co.,Ltd.
Country South Korea
Supplier Grade level3
INVERTER DC TIG WELDER(NST-350)
INVERTER AC/DC TIG WELDER(NST-AC/DC 350)
INVERTER DC ARC WELDER(NSA-200)
WELDING PIPE ROTATOR MACHINE(NSPR-1000)
→ Cutting with air only, no need other gases.
→ Non contact arc starting by pilot circult.
→ High quality cutting is possible.
→ Narrow heat effect range of sheet, and a small feat distortion.
→ Unnecessary pre-heat time and an easy cutting to everyone as contact cutting.
→ No need keeping to push torch swich during cutting by turn Torch switch holding switch.