... designed for cold forming carbon steel,stainless steel elbow with curvature of 1.0D to 1.5D and with diameter from ... for the petrochemical,gas and oil pipes,electrical ,food,etcForming principle:pipe is push into forming cavity by ejector rod, ... botton centralzed control,which can be conveniently adjuste and opereated both manually and automatically.Forming principle:tube in the external cavity mode ...