... 30 Ton Products:Forged Shaft.Steel grade:Carbon steel:Chinese Standard:20#,25#,35 ... C45,CK45,C60,CK60;C45E;Alloy Steel:Chinese Standad:16Mn,20Mn,30Mn2, ... F12,F22,F5,F9,51Cr4.Tool Steel:1.2714,H13,H11,P20,SKD61 ... Rough Maching+Queching+Tempering+Finish Machined.Steel ingot:EAF+LF+VD.Ultra-sonic ... Stud Bolt, Pump ShaftForged shaft Material Carbon steel,alloy steel, Tool steel.Material Standard:GB, BS, ASTM, EN ...