Chnia Air Cleaning Machinery Parts 1.Material:Stainless Steel 2.Surface:Polished 3.Certification: ... price , faet delivery time ,good service.6).Material stainless steel ,cold work steel ,Spring steel , martensitic steel,aluminum ,brass, bronze,copper ... 0.002 STOCK OF COMMONLY USED MATERIALAustenitic Steel SUS303, SUS304 Cold Work SteelDF-2,XW-5, XW41, SKD11High Speed SteelHSP-41 ...