... Easy operation, high effiency and precision, reasonable price This machine is composed of main & idle chuck, branch pipe ... display (or CNC control)2.The machine is used for positioning, assembling and welding between steel pipe and flange, ... .The machine should be driven by motor, with NC or CNC display, simple operation, and accurate welding angle ... of motor (kW)141415 ZH Series Flange Welding Machine