... Material Standard:Aluminum alloy or as your require oem stainless steel casting tube polishingSpecifications1.No defects sand casting+CNC ... partsPrecision turning piecesMold makingMetal Extrusion III. MATERIAL CAPABILITIES Carbon steel, alloy steel, stainless Steel etc.Brass, bronze, aluminum, magnesium, Aluminum alloy, ... cast iron etc.PP,PE,ABS,PET,PVC oem stainless steel casting tube polishing