1st Chemical composition: UPVC, It is unplasticized polyvinyl chloride, which is made by adding a certain amount of modification additives to PVC resin powder. The main component is polyvinyl chloride (PVC); CPVC: It is chlorinated polyvinyl chloride made by increasing the chlorine content on the basis of PVC resin through a certain process. The chlorine content is generally around 63%25-69%.
2nd Physical properties-Heat resistance:UPVC, The maximum operating temperature is generally 70°C. It is easy to deform at higher temperatures. It is usually suitable for general temperature conditions such as cold water supply; CPVC, The maximum operating temperature can reach 110°C. It can maintain stable performance under 110°C , so it is suitable for hot water systems and industrial processes with high temperature requirements.
3rd Water Pressure Resistance: UPVC,The pressure resistance is generally about 16kgf/cm2; CPVC, The pressure resistance is better, reaching more than 25kgf/cm2, and can withstand relatively higher pressure.
4th Chemical properties- Chemical resistance: UPVC,can resist the erosion of most acids, alkalis, salts and other chemicals, but it does not perform as well as CPVC when in strong oxidizing substances or special solvents. CPVC, is known for its excellent chemical resistance and can withstand a wider range of chemicals. It is favored in industrial applications, especially in the occasions of conveying corrosive liquids, strong acids, and strong alkalis.
5th Cost : UPVC, the price is relatively affordable, which makes it widely used in the civil field and some general industrial applications that are sensitive to cost. CPVC, cause it needs to increase the chlorine content during its production process and the mix of more modified materials , so its cost is relatively high. The CPVC raw material its market price is generally more than 20,000 RMB/ton, so the end product of CPVC is relatively much more expensive than UPVC.