Why does the home use a PPR pipe instead of a PE water supply pipe?

- Aug 18, 2018-

PE  water supply pipes and PPR pipes can be used for home improvement, but  in general, PPR pipes are used several times more than PE water pipes. So what is the reason? There is no harm without comparison, the following is for everyone to compare data!

1.Elastic modulus

PPR water pipe: elastic modulus 850MPa, good strength and toughness.

PE  water pipe: elastic modulus 550MPa, good flexibility, insufficient  rigidity, used in building water supply, easy to bend, easy to deform.


2. Thermal conductivity

PPR  water pipe: thermal conductivity of 0.24, low thermal conductivity,  slow heat dissipation and good thermal insulation performance.

PE  water pipe: thermal conductivity 0.42, fast heat conduction, suitable  for floor heating, not suitable for hot water pipes, otherwise the heat  loss is large and the surface temperature is high.

3. Temperature resistance

PPR  water pipe: The maximum working temperature is 75 ° C, the lowest is  -10 ° C, long-term use of PPR water pipe is also safe and reliable.

PE  water pipe: The maximum working temperature is 70 ° C, the lowest is  -30 ° C. In this temperature range, long-term use of PE water pipe is  safe and reliable.


4. Welding performance

PPR  water pipe: welding temperature 260 ° C, easy to operate, PPR water  pipe fluffing round, using the PPR pipe welding machine on the market.

PE  water pipe: welding temperature is 230 °C, the flange is irregular,  easy to block, the material is easy to be oxidized, and the surface  oxide scale must be scraped off by special tools before welding.


5. Low temperature impact strength

PPR  water pipe: PPR water pipe is stronger than PE water pipe. When used  under low temperature conditions, any pipe must be insulated. Otherwise,  the pipe will be cracked due to volume expansion caused by icing.

PE  water pipe: PE water pipe is more flexible than PPR water pipe. When  used under low temperature conditions, any pipe must be insulated.  Otherwise, the pipe will be cracked due to volume expansion caused by  icing.

Based  on the above, the PPR pipe is more suitable for indoor decoration, and  the PE pipe is suitable for outdoor complex environment. Both have their  own advantages, and both pipes are used in engineering construction.