Tube Rolls: 1.Usage: for producing all kinds of steel pipes 2.Hardness: HRC58-60 3.Material: Cr12 Tube Rolls: Yangzhou Hengchang Engine Co., Ltd is specialized in steel pipe making machine, welding and forming machine, roller/mould designing. With more than 20 years experience, we are the best manufacturer you can trust in China. DescriptionMaterialCr12 similar to Cr12MoV or SKD11 or ...