... of valve, used in agriculture 3) Process: casting and machining Pressure Safety Valve Details:1. Material: WCC,WCB, 86202. ... ), zinc, nickel, chrome plating, hot galvanized, powder coating and painting 5. Manufacturing equipment: Electric furnace, sand mixing machine, ... province. Honesty is our principle, professional operation is our work, service is our goal, and customers' satisfaction is our ...