... productions are over 2000 tons. ProductIntroduction1. Material:Ductile cast iron: QT400-15, QT450-10, QT500-7, QT550-6, ... parts, Railway fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.3. Nearly 150 ... 316L, 410, 420, 17-4PHIron ( all grades)Gray iron, Ductile iron, alloy ironAluminumASTM A356, A360, A380, ADC12 etc.1. ...