Classification of plastic pipes

First, the commonly used plastic pipes are: PPR (polypropylene), PVC (polyvinyl chloride), PB (polybutylene), PE-RT (heat-resistant polyethylene), PE (polyethylene) \ HDPE (enhanced high-density poly Ethylene) and so on.

Second, the size of plastic pipe is generally expressed by the outer diameter. Such as PPR tube: De63

Third, the service life of plastic pipes according to GB/T18252-2000 "plastic pipe system with extrapolation of thermoplastic pipe long-term hydrostatic strength determination" method. This is a method of statistically extrapolating and predicting the long-term strength properties of thermoplastic materials or products through the results of hydrostatic strength tests on pipes. At present, most of the international use this method to calculate, at 20 °C temperature, plastic pipe is generally 50 years of life.

Fourth, plastic pipe molding equipment is injection molding machine, through a professional injection molding machine into a pipe.

Five, plastic pipe connection methods are generally two kinds: hot melt, adhesive.

Sixth, the main standards for plastic pipes are:

1. PPR (polypropylene): GB/T18742.1, GB/T18742.2, GB/T18742.3

2. PVC (polyvinyl chloride): GB/T10002.1-2006, GB/T10002.2-2003

3, PE (polyethylene): GB15558, GB/T13663

4, HDPE (enhanced high-density polyethylene): GB/T19472.2-2004