PVC pipe (polyvinyl chloride) is a pipe made by polymerization of vinyl chloride monomer. PVC is a polymer that uses the lowest petroleum raw material compared with other polymers. And HDPE pipe (high-density polyethylene) is a pipe made of high-density polyethylene. Polyethylene itself is a polymer composed of long-chain ethylene monomers
In terms of elasticity, compared with HDPE pipes, PVC pipes have lower elasticity. In order to make this kind of PVC pipe elastic, plasticizers are usually used. However, the addition of this substance is considered dangerous, so it is best to avoid it. If you want it to become elastic, you can also heat it up a bit, but this elasticity is only temporary when it is still hot. The HDPE pipe is very flexible, and it can be bent at general angles without joints.
PVC pipe and HDPE pipe have long-lasting performance, except that the PVC pipe is white, if it is often covered with moss for a long time. Although PVC pipe has the property of absorbing heat, it will become more curved if it is placed in an area exposed to the sun. Unlike high-density polyethylene pipes, it cannot overgrow moss and is heat resistant, so it will not bend even when exposed to sunlight.
Functionally, both have drainage function, and only PVC pipes allow cold water installation. And HDPE pipe can be used to install hot or cold water.
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