Surface roughness: 0.4-0.1 Surface treatment of hardness hrc60grade Straightness: 0.15/1000mm Circle of tolerance: gb1184 9grade Chrome thickness:according to user requirements Full-length size tolerance: gb1100itgrade Material:according to user requirements Axis of hardness: hb220-280 Availability status:not dealing with the surface, surface chrome or nickel phosphorus and nitrogen surface salt spray Note:for special specifications, call(letter)custom. Specifications: ª)6-ª)12 ª)16-ª)25 ª)30-ª)50 ª)55-ª)100 ª)105-ª)1200 Length: 200-2000 200-3000 200-5000 200-10000 1000-10000