Series of roller moulds available for GH10,25,32,45,60,76,89, ... materials and heat treatment to processing of macihines adopt a full set of advanced processing techniques.Nitrogen treatment is available subject ... high precision,high quaity and long service life.Series of roller moulds available for GH10,25,32,45,60,76,89 ... ,165etc,welded pipe units as well as stainless steel unit. roller moulds