... Inspection→Welding→TestStandardASTM, ANSI, DIN, GB, NF, ISO, BS, JISCasting processwater-glass sand casting, water- ... Materialstainless steel, carbon steel, low alloy steel, ductile iron, gray cast iron, aluminum alloy InspectionUltrasonic test, magnetic particle test, tensile ... which mainly produces pump parts, valve parts, cylinder parts, tractor parts, lathe body, furnace parts and so on. We ...