... 500kg 4.Certificate:ISO9001 Ductile Iron Sand Casting For Machinery Parts Features:1)Material: ductile iron/gray iron2)Standard: ... We are specialized in manufacturing different kinds of iron and precision castings, motor housings, flanges, fittings, couplings, ... valves, pillow block bearings, fasteners, compressor brackets, scaffolds and other related products. During years of export experiences, we' ...