alstainless steel precision casting tube 1.Aluminum, zinc, steel, brass, 2.Surface treatment: polish, plating, 3.custom stainless steel precision casting tube 1.Aluminum, zinc, steel, brass, 2 ... 3.custom 1.Materialstainless steel;Aluminum alloy,etc 2.Process Aluminum casting, sand casting, die casting, gravity casting, high pressure die casting, low pressure die casting. 3.CertificateISO9001:2000 ...