... .Diameter:2M Products:Forged Shaft.Steel grade:Carbon steel:Chinese Standard:20#,25#,35#,45#,50#,60#;Japan Standard:S20C,S25C,S35C,S45C,S55C ... , Coupling, RPV Stud Bolt, Pump ShaftForged shaft Material Carbon steel, alloy steel, stainless steel,Material Standard:GB, BS, ASTM, EN, DIN, AISI, JIS Forged Shafts ...