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Anonymous users2024-01-24In the international standard, polypropylene hot and cold water pipes are divided into three types: PP-H, PP-B, PP-R, and there is no PP-C.
The PP-C pipe that appears in the domestic market is actually a PP-B pipe, and its raw material is a special material for block copolymer polypropylene pipes.
PP-B pipe is a kind of hot and cold water pipe, the price is relatively cheap, and its heat resistance and pressure resistance are very different from PP-R.
For example: when hot water is used (temperature 70, pressure, dn25mm pipe is also used, PP-R pipe wall thickness, PP-B (PP-C) pipe wall thickness is required; With the same diameter and wall thickness, PP-B (PP-C) pipes are often difficult to ensure quality or competence.
In view of the above, for home use, a tube of 20 is generally sufficient; If the water consumption is large, you can choose a 25 tube. If you choose PP-B (PP-C) pipe, you should focus on checking its wall thickness or check its temperature and pressure resistance test report.
If the price difference is not very large, it is recommended to use PP-R pipe to avoid future maintenance, overhaul and other troubles.
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Anonymous users2024-01-23All use PPR hot water pipes, which are safe, reliable and affordable.
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Anonymous users2024-01-22It is better to use PR tubes, 20 is sufficient.
Yes, when I am engaged in kitchen design, I now require customers to pre-embed PVC pipes with a diameter of 106 mm in the ceiling in advance.
If it is only to set the wire, it is possible, the corrugated pipe can be extruded with PE, PA and PP three materials, which can be used to protect wires and cables from mechanical damage such as scratching and cutting, and has the advantages of good flexibility, good bending, acid resistance, wear resistance, etc., and plays a role in protecting wiring harnesses, wires and cables, and is more suitable for some corners or bent wires to play a protective role. Bellows are widely used in machinery and equipment, automation control, automobiles, subways, electrical switchgear and other industries.
It will not corrode, when it is not too concentrated about 20%.
In principle, as long as the drainage pipe can be connected without leakage, it can be used, and there will generally be a hose connection, and it is generally not easy to use a hard pipe connection directly.