Main features of TIG: 1. Adopt advanced MOS/IGBT invert technique.steppless current adjustment. 2. Adopt touched arc technique. Be free from electromagnetism抯 disturb. According to EMC standard. 3. Compact,light, portable and high efficiency. 4. Argon,it is suitable for stainless steel, copper,aluminum,steel, titanium,nickel and other alloy material. 5. Quick joint. 6. With accessories. 7. Color box. Model Input voltage(v) Rated duty cycle(%) Dimension(mm) 20''CTN 40''CTN TIG-160 220-230 60 450*270*345 620 1390 TIG-180 220-230 60 450*270*345 620 1390 TIG-200 220-230 60 450*270*345 620 1390 TIG-250 220-230 60 450*270*345 620 1390 TIG-160P 220-230 60 450*270*345 620 1390 TIG-180P 220-230 60 450*270*345 620 1390 TIG-200P 220-230 60 450*270*345 620 1390 TIG-250P 220-230 60 450*270*345 620 1390