1) Material: Alloy steel, Carbon steel, etc. 2) Standard: ASTM, EN, DIN, JIS, GB, etc. 3) ... , etc. The material contain various kinds of high quality carbon steel, alloy steel, tool steel, bearing steel, etc. We adopt the advanced production process that contains ... roughnessPrecision(mm)Coaxial tolerance(mm)φ100~φ15001.60.10.08 Forged shaft parts