Multi-layer pipes will be the application area of ​​recycled materials

Plastic pipes are widely used in water supply and drainage engineering, electric power and communication engineering, gas transmission engineering, agricultural irrigation engineering, industrial production and other fields in cities and buildin.

From 2011 to 2018, the output of plastic pipes in China increased from 10 million tons to 167 million tons, with an average annual growth rate of 6

At present, the market share of plastic pipes in various types of pipes in the country exceeds 5

Rigid polyvinyl chloride (PVC-U) water supply and drainage pipes are the best-developed plastic pipes in Chi.

PE water supply and gas pipelines gradually emerged in the late 1980s with the development of high-density polyethylene (HDPE) special materials for pressure pipelin.

PP-R pipeline is the random copolymerization of PP-R obtained by adding ethylene monomer with a content of not more than 2% and propylene to random copolymerization of PP raw materials during the preparation proce.

Aluminum-plastic composite pipe is a composite pipe of metal and plast.

Double-wall corrugated pipes and winding pipes are also relatively well-developed plastic pipe varieties in Chi.

The inner wall is a smooth structure in order to meet the needs of transporting fluid, and the outer wall is made into a corrugated or hollow structure to meet the needs of buried resistance to external pressu.

In addition to the above-mentioned plastic pipes, some other plastic pipes include sheath pipes for power transmission and chlorinated polyvinyl chloride (PVC-C) for chemical use, acrylonitrile-butadiene-styrene copolymer (AB.

With the development of the "four sections" of energy saving, water saving, material saving and land saving in the whole society, it will promote a larger application market for plastic pip.

The European Plastics Pipe Manufacturers Association (TEPPFA) has pledged to use 250,000 tons of recycled material per year by 202 Sponsor programs in Europe may mandate the use of recycled materials to replace more virgin feedstocks in the near futu.

At present, some pipeline recycled materials are used in non-pipeline and some non-pressure pipelines, and the use of recycled materials is still not allowed in all pressure pipeline syste.