... GGG40 Check Valve Body by Sand Casting Process CNC Machined and Zinc Galvanized Offering OEM Our company is ISO 9001:2008 ... quality cast iron supplier. Specializing in casting of gray iron and ductile iron products in weights from 1 kilogram to 3 ... , Pump, Pressure vessel, Gear boxes, Railway parts, Auto parts, Manhole covers and various types of graded casting. Our contact details are as ...