1,tyre mound 2,non-standard forging 3,rough machining 1, ... the authentication of "Classification Society". 5,we usualy use material of steel type of 15#,20#,25#,30#.35#,40 ... 45#,46#,etc.according to customers' different requirements.6,main material are 5CrMnMo,40Cr,42CrMo,20Cr2Ni4,5CrNiMo,15CrNiMo,20CrNiMo,35CrMo,40CrNiMo ... ' clear requirements we can render excellent heat treatment. vehical tyre moulds