Key of controlling technology of bending and reducing rate of metal pipe: key technologies of metal tube bending reduction rate of the thickness control involved metal tube bending technology. In recent years through a number of theoretical analysis and experimental research, We King-Mazon technical team have known that metal material of wall thickness variations is related to the bending radius We find that the key to the control technology of the metal pipe bending is that in the bending of thin-walled metal tubes, the relative bending radius of bending should be strictly controlled when designing. Thus technology workers in the design pipeline should carry out more metal pipe bending and reduction rate control technology research. Technical support www.king-mazon.com