What is the difference between ppr hot and cold water pipes

What is the difference between ppr hot and cold water pipes? 

There are many differences between ppr hot and cold water pipes, such as different appearance, different high temperature resistance, different raw materials, different pressure resistance, etc. The following is a detailed introduction.

1. The appearance of ppr hot and cold water pipes is different

Usually, the PPR hot water pipe is marked with a red line, and the PPR cold water pipe is marked with a blue line, and has a text mark and a pressure resistance mark. In addition, pipes of the same specification can also distinguish between hot and cold water pipes. The wall thickness of the cold water pipe.

2, the number of high temperature resistance is different

The PPR hot water pipe can withstand a temperature of 95 degrees, and can reach 110 degrees in an instant. The hot water pipe can be used for a long time under the conditions of a temperature of 70 degrees and a working pressure of 1.0Mpa, and its service life can reach more than 50 years. PPR cold water pipes generally cannot exceed 45 degrees, otherwise long-term work in hot water will quickly age and crack.

3. Different raw materials

Hot water pipes must be produced from copolymer PP-R materials, and cold water pipes must be produced from homopolymer PP-B materials. PP-R at high temperature stability and better mechanical properties, good low temperature toughness. PP-B materials are easily deformed when used at high temperatures, and their strength will be greatly reduced.

4. Different pressure resistance

The PPR hot water pipe is hit with a hammer and cracked, while the PPR cold water pipe may only be flattened due to the force and will not crack.