... machine is suitable for the large and intermediate Dia of pipe of circular seam welding’ shoting welding,filling welding and ... track, controlling system, welding source. Technical ParametersApplicable pipe diameter:φ325-1420 mm Applicable pipe wall THK: 6-80mm Input voltage: 240W, ... 2,Owing to the tubing, especially our country widespread use spiral welded pipe Dia difference is too large, the dia of ...