... 4.Imported brands 5.Short welding time BYC series friction welding machineMain features1.All electrical and hydraulic ... and carbon steel welding together. 4.Automotive industry: exhaust valve, hydraulic jacks, transmission gears, turbochargers, camshafts and flange, ... : diesel engine pistons, gears, hydraulic piston rod. 6.Others: printing press rotor, electrical axis, marine motor drive shaft ...