... quality services - Customer Satisfaction Anzhong Shuangji friction welding company has been widely used in the oil industry production: Rod, geological drill ... a continuous drive friction welding machine: C25, C50, C100, C200, C250 , C320, C500, C630, C800, C1200 b, inertial friction welding machine: CG63 c may, in ... 3, increased computer closure loop control system). Anzhong Friction Welding machine