China Pipe Inside Welding Machine

The machine is used to weld the inside welding seam of pipe after tack welding. During the welding process, pipe is transferred shock-free and vibration-free on a transfer carriage in order to produce a constant weld seam quality. The inside welding machine is designed as cantilever beam structure. The offset of transfer carriage exceeds the length of cantilever beam. The top of cantilever beam is installed welding device.
The cantilever beam is inside pipe body. When the transfer carriage retracts at a welding speed, the inside seams are welded on the machines working on basis of the submerged arc welding process. Welding electrodes, wires, welding flux and welding current are supplied to welding seam by the cantilever beam of inside welding machine.
Model
NameGNH-50/1422/12200GNH-50/1460x 12200Mode of weldingAutomatic arc weldingAutomatic arc weldingPipe diameter (mm)360~1422360~1460Wall thickness (mm)X80≤ 40; Q345≤ 40x80≤ 40; Q345≤ 50Welding length (mm)8000~122006000~13000Material (mm)Q345, X45~X80Q345, X45~X80Welding Wire number2 ~42~4Wire diameter (mm)3.2~4.03.2~4.0Welding speed (m/min) (variable frequency speed control)0.5~3
Stepless speed regulation0.5~3
Stepless speed regulationCarriage speed (m/min)
(variable frequency speed control)0.5~25
Stepless speed regulation0.5~25
Stepless speed regulationCarriage power (kw)18.7718.9Speed of turning roller (m/min)0~9.9 Frequency control of motor speed4.55Welding seam precision (mm)Longitudinal welding: ± 0.5
Vertical welding: ± 0.5Longitudinal welding: ± 0.5
Vertical welding: ± 0.5Lifting height of cantilever (mm)≥ 200mm≥ 200mmLifting height of earthing device (mm)≥ 1500mm≥ 1500mmRetreating distance of machine (mm)≥ 20000mm≥ 20000mmFluctuation of current and voltageCurrent≤ 1%, Voltage≤ 7%Current≤ 1%, Voltage≤ 7%Welding methodFixed welding point and moving pipeFixed welding point and moving pipeAdjusting range of current (A)DC240~1500A AC240~1200ADC240~1500A AC240~1200AAdjusting range of voltage (V)DC24~46V, AC24~44VDC24~46V, AC24~44VProduction efficiency (pcs/min)1/121/12Overall dimensions(Lx Wx H) (mm)31000x 5000x 350029500x 1400x 3375Weight (kg)28000