precision metal parts, high quality and competitive parts OD:5-1800mm;ID:5-1500mm;Length:5-5000mm;Tolerence:0.002mm.Material:Stainless steel; Carbon steel;Forging steel; Casting etc.Turning,Boring,Milling,Grinding etc.Already we have built firm relationship with some famous companies in the world, such as ALSTOM,Bombardier, DANIELI,and Siemens etc.. precision shaft