The water pipes of PPR are sanitary, healthy and environmentally friendly. Polypropylene is an environmentally friendly material, which can be used for drinking water transportation.
Performance characteristics of PPR tube:
Good corrosion resistance: except for a few oxidants, it can resist the corrosion of various chemical media and will not rust, corrode, breed bacteria or electrochemical corrosion.
Sanitary and non-toxic: PP-R material is completely composed of carbon and hydrogen, and no toxic heavy metal salt stabilizer is added. The hygienic performance of the material has been tested by the national authoritative department.
Extended data:
Matters needing attention of PP-R tube:
1, PP-R tube is prone to aging and degradation after long-term ultraviolet irradiation, so it must be wrapped with a dark protective layer when installed outdoors or in direct sunlight.
2.PP-R pipe is brittle at low temperature below 5℃, so be careful in winter construction, and slowly cut the pipe with a sharp knife. Don't squeeze or knock the installed pipeline, and cover the parts vulnerable to external force when necessary.
3. After pipeline installation, pressure test must be conducted before sealing the pipeline (directly buried) and covering the decorative layer (not directly buried). The pressure test pressure of the cold water pipe is 1.5 times of the system working pressure, but not less than1MPa; The test pressure of the hot water pipe is twice the working pressure, but not less than 1.5 MPa. The time and method of pressure test are specified in the technical specification.
4.PP-R pipes should be connected by hot melt except mechanical connection methods such as threaded inserts or flanges, so that the pipes can be connected into a whole without leakage.
5. The linear expansion coefficient of PP-R pipe is large (0. 1.5 mm/m℃), so technical measures must be taken to prevent the pipe from expanding and deforming when it is buried.
6. The hardness and rigidity of PP-R pipe are lower than that of metal pipe, so it should be protected during handling and construction to avoid mechanical damage caused by improper external force. Mark the location of the pipeline after dark application, so as to avoid damage to the pipeline by secondary decoration.
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