... annual productions are over 2000 tons. ProductIntroduction1. Material:Ductile cast iron: QT400-15, QT450-10, QT500-7, QT550-6, ... QT600-3, QT700-3Grey cast iron: HT150, HT200, HT250, HT300;Alloy cast iron: ASTM C-1362, ASTM C-1500; ... fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.3. Nearly 150 varieties ...