... torque support, planet carrier, bearing housing, gear housing, sealing cover and other ductile iron castings & parts.Thermoelectricity system: Heat ... & core, cover and other parts; ductile iron transporter parts as housing, valve body & core, etc.Hydroelectric system ... grey cast iron body, housing, spindle carrier, siding, table, base, motor housing; ductile iron base frame, bearing, housing, valve and ...