most of the pipe systems require corrosion resistance, high mechanical strength, flame retardant performance, and suitability in different weather, and easy to be installed. CPVC pipe is an appropriate choice of application in this variety of conditions. It's gradually accepted by the market, especially when the system need to conveying strong acid or alkali chemicals. Most of the industries are now using CPVC system such as metl and electronic processing, electroplating, copper/aluminum produc