... , bearing housing, gear housing, sealing cover and other ductile iron castings & parts.Thermoelectricity system: Heat-resistant or wear- ... alloy steel moving & fixed rings, ductile iron roller stand & core, cover and other parts; ductile iron transporter parts as housing, valve body ... , spindle carrier, siding, table, base, motor housing; ductile iron base frame, bearing, housing, valve and others; wear ...