The ceiling grid is made of high quality hot-dipped galvanized steel and prepainted galvanized steel,which guarantee the characters of moisture proof,corrosion resistanct and color lasting.The automatic cold roll forming and punching machineries guarantee the high precision.
ERW stands for Electric Resistance welded pipe. A plate rolled to become a pipe and welded using Electric Resistance Welding process. Usully for for high diemeter. (cheapest process avaiable)