... GB, BS, JIS,NF Investment Casting of Steel Bent Axle / Crankshaft 1.Quality system certificate: ISO 90002. Standard: AISI, ASTM, ... Ductile Iron, Aluminum, ect . 10. Surface Treatment: Heat Treatment, Machine, Polishing, Chrome, Zinc, Nickel Plating 11. These parts are used ... in machine assembly, valve &pump parts, auto &motorcycle parts, train & ...