... hydraulic elbow forming machine 1.Hydraulic propulsion 2.M-frequency heating 3.Automatic feeding 4.highquality MAX.OD168mm hydraulic elbow forming machineIt used ... guide clamp wheel,fixture motor). b,hydraulic motor 4 set c,hydraulic contral valve 1 sets ( REXROTH type) d,oil ... fuselage,weldment,the main pushing board are welded board c,screw,chain,standard parts and bearing are national standards ...