Hydraulic elbow macking machine: 1.Controlling mode:PLC or relay 2. ... 1/2''~20'' This series of Hydraulic elbow macking machine is mainly designed for cold forming carbon steel,stainless ... petrochemical,gas and oil pipes,electrical ,food,etcForming principle:pipe is push into forming cavity by ejector rod,the ... "100005000285057YKWT-1600T16 "~20 "160008000286590 YKWT -300T hydraulic elbow making machine