China Automatic Oil Port Welding Machine       
1. automatic oil port welding machine is designed to weld oil port in different hydraulic cylinders. With uniform and smooth welding appearance.
2. hyraulic cylinder diameter: 32mm-165mm.
3. oil port diameter: 22mm-76mm.
4. oil port height: 100mm.
5. MIG welding type. 
6. PLC and touch HMI are used to control the whole machine. automatic welding system.
7. Users also can purchase automatic hydraulic cylinder welding machine or piston rod welding machine together, which is used to weld hydraulic cylinders and piston rods.