... of origin:China,(mainland)Material: carbon steel, stainless steel and alloy steel etc.Process:investment casting or lost wax castingStandard: ... ASTM,SAE,BS,NIN,UNI and JIS.Surface treatment:sand blasted, and then painted,galvanized or zinc plated. ... CNC milling, CNC drilling, CNC boring, CNC threading and grindingGood quality and competitive price ,can supply as per customers' request, ...