detailed information:   length series:1270mm   repeat series:410,420,460,820,914,918mm   Note:specific repeat size can be produced according to customers' requirements as well as can produce in line with customers' extraordinary requirements.   Characteristic: High geometric accuray,the straightness of the outer round is 0.01mm,the smooth finish attains Ra0.05,the diameter deviation is 0.01mm;the hardness of copper layer is HV200 or more and uniform;the crystallization of copper layer is meticulous and dense, can be carved easily,the edge of pattern is clean and printing forming is clear;accurate measurement,high hardness,long service life,can guarantee the continuous producing as well as can be used repeatedly.