High precision , and high quality mechanical component, used on high-speed train Motor. High precision motor cover with good quality and competitie price.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, ...