Polybutene is a plastic resin that was widely used in manufacturing water supply pipes from 1978 to 1995. Due to the low cost and easy installation of the material, the polybutene piping system is regarded as a "new type of piping in the future". It is a high-molecular inert polymer. PB resin is a polymer complex synthesized from butene-1. It is a crystalline body with a special density. It is a heterogeneous body with flexibility. The PB tube is made of polybutene resin. The raw material is a pipe produced by isotactic polymerization.

This plastic tube is usually gray or white and matte. The piping system is used for groundwater mains and internal water distribution pipes. In some countries abroad, it has been installed in at least 6 million homes, and some experts point out that it has been used in up to 10 million homes.

How to judge whether there is polyethylene on the outside

-Polybutylene groundwater main pipes are usually blue, and may also be gray or black (do not mix black polyethylene with polyethylene pipes). Its diameter is usually 6 minutes or 10 inches, and can enter the house through walls, floors, and concrete slabs. The main stop valve is connected to the end of the water supply main.

Will the pipeline fail?

It lacks scientific evidence. It is believed that oxidants (such as chlorine) in public water supply react with polybutene pipes and acetal fittings, causing them to scale and become brittle after peeling. Micro-cracks are generated, reducing the basic structural integrity of the system. As a result, the system becomes fragile and may fail without predicting and damage the structure and property of the building. Other factors may also cause the failure of the polybutene system, such as improper installation, it is practically impossible to detect the installation problem of the entire system.

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