... , 2.Surface treatment: polish, plating, 3.custom stainless steel precision casting tube 1.Aluminum, zinc, steel, brass, 2.Surface treatment: polish, plating, 3 ... .custom 1.Materialstainless steel;Aluminum alloy,etc 2.Process Aluminum casting, sand casting, die ... your inquiry and we will answer you within 24 hours stainless steel precision casting tube