Performance Features: The best-selling model; Applicable for large amount of STD wall thickness pipe fabrication; Twosets of polyurethane coated driving wheels(two PCS per set, totally four PCS); Driven by motor and reducer; Twosets of polyurethane coated hold-down wheels(two PCS per set, totally four PCS); Held-down by embedded screw rod mechanism; Built-in drivingwheel and exposeddriving system; Fast positioning weld with longitudinal telescope boom; Standard configuration: Lincoln Flextech500 multi-function welding power; TIG/MIG root welding with QSPT’s root welding technology; TIG/MIG/SAW fill-in and cap welding; Operation with a streamline welding control cabinet + an aluminum alloy wire control box; The best choice for STD wall thickness pipe welding.