1. Different materials: stainless steel water pipes are metal materials, which are healthy and environmentally friendly, while PPR water pipes are plastic materials.
2. The service life is different: stainless steel water pipes have been used for more than 70 years, the same life as the building, and no maintenance is required in the later period; the service life of PPR water pipes is 15-20 years, and the maintenance and replacement costs are high
3. Different pipe strength: stainless steel water pipe material has high strength, can withstand instantaneous pressure 89Mpa, stainless steel does not rust and does not age; PPR water pipe material strength is less than one-tenth of stainless steel, and it will break when knocked.
4. Different pressure-bearing capacity: stainless steel water pipes have high pressure-bearing capacity, resistant to 2.5Mpa pressure, and metal pipes are preferred for high-level water supply; PPR water pipes have low pressure-bearing capacity, especially not suitable for high-level water supply
5. Different pipeline deformation: stainless steel water pipe has a small thermal expansion coefficient and will not produce deformation; PPR water pipe has a large thermal expansion coefficient, which causes severe deformation and bending after a period of use.
6. Different environmental protection and health: stainless steel water pipes are green and healthy, and will not precipitate harmful substances, causing secondary pollution to the water source; red water, smelly water, environmental hormones, and plasticizers have always been a problem with plastic pipes
7. The flow rate is different: the inner wall of the stainless steel water pipe is smooth, which is not easy to accumulate, and does not affect the water flow; the inner wall of the PPR water pipe is rough and easy to accumulate. After many years of use, the water flow decreases.
8. Aging: 304 food grade stainless steel does not rust or age; PPR water pipes are easy to age, harden and become brittle, and are more likely to burst.
9. The hidden danger of water leakage: the hidden danger of water leakage in stainless steel water pipes is small, and the threaded connection technology can ensure that the pipe never leaks; PPR water pipes are low pressure, thermal expansion deformation, aging and brittleness, etc.