Full -automatic bending machine for the bending of grade 80 chain: 1.Model :TRB06,TRB10 2.Bending size:Dia.3-6,Dia.6-11 ... Full -automatic bending machine for the bending of grade 80 chain ... grade 80 chain , full -automatic welding machine for the welding of grade 80 chain , chain calibration machine for the calibration of grade 80 chain ...