... pipe welding device 1.Welding range:20-63mm 2.Rated volatage:220V 3.Frequency:50/60HZ 4. ... Applying:PP-R,PB,PE,PE-X 20-63mm ppr pipe welding device1.Welding range:20-63mm2.Rated volatage:220V3.Frequency:50 ... :220V±10%Frenquency:50/60HZWorking temperature:0-300°cWorking Range:Ø20-Ø63mmApplying to:PP-R.PB,PE,PE-X ...