1.What's the difference between a PPR hot water pipe and a cold water pipe?
1, the appearance is different, PPR hot water pipes are marked with red lines, cold water pipes with blue lines, and there are words beside them, as well as signs of pressure resistance. You can also distinguish hot and cold water pipes by comparing the wall thickness of pipes of the same specification, and the wall of hot water pipes is thicker.
2. Different temperature resistance. PPR hot water pipe can withstand 95 degrees, and it can reach 1 10 degrees instantly. It can also be used for a long time at the temperature of 70 degrees and the pressure of 1Mpa, and the service time can exceed 50 years, while the PPR cold water pipe cannot exceed 45 degrees, otherwise it will age and crack after long-term use.
3. The raw materials are different. The hot water pipe is made of * * polymer PP rod B, and the cold water pipe is made of homopolymer PP rod R. The former has excellent thermal stability and mechanical properties and first-class toughness at low temperature, while the latter will be deformed and its strength will be reduced when used at high temperature.
4. The degree of stress is different. The hot water pipe of PPR can only be knocked open with a hammer, while the cold water pipe of PPR will be flattened at most without cracking. However, if the merchants add a large amount of limestone powder in order to reduce the cost, the strength will also be affected, and even the cold water pipe can't resist the hammer.
5. The required pressure is different. The pressure of the cold pipe is 1 or 1.6 MPa, while the pressure of the heat pipe is 1.6 or 2 MPa, so the pressure of the heat pipe is greater than that of the cold pipe.
6. The price is different. Generally, the price of hot water pipes will be higher than that of cold water pipes.
7. The purpose is different. PPR hot water pipes are generally used in the cold and hot systems of buildings, while cold water pipes are used as water pipes.
I conclude that the above is the difference between PPR hot water pipe and cold water pipe. From the above article, we can see that these two kinds of pipes are very different. Be sure to understand their characteristics before actual use, and then choose the appropriate use according to actual needs, which can avoid a lot of trouble and hope to help everyone.