... protection 5. well adapted 6.heating fast. saw blade welding machine,saw blade heating equipment,saw blade welding.Application:1. Heat ... of standard parts, fastener and other machinery accessories, hardware too, straight shank twist drill are hot rolling. The round steel with ... wheel, valve, ball pin , Etc. and hardening of large size machine tool guideways and Ductile cast iron.4.Welding, Welding head ...