For home decoration, the water supply and drainage pipeline mainly refers to the water supply pipeline section. Nowadays, there are many kinds of pipeline materials in the market, and users often do not know what they are. So what kind of people are there and which ones are suitable for use? Below, we will analyze in detail. →Related reading: How to choose a water pipe in a hidden project

First, the type of pipeline

1, galvanized iron pipe

Galvanized iron pipe is the most used material at present. Due to corrosion of galvanized steel pipe, the content of heavy metal in water is too high, which affects human health. Many government departments in developed countries and regions have started to explicitly prohibit the use of galvanized iron pipes. At present, China is gradually phasing out this type of pipeline. →Related reading: What should pay attention to indoor water pipes

2, copper tube

A more traditional but expensive pipeline material, durable and more convenient construction. In many imported sanitary products, brass is the first choice. Price is the most important factor affecting its use. In addition, copper corrosion is also a factor on the one hand.

3, stainless steel tube

Stainless steel pipe is a more durable pipe material. However, its price is relatively high, and the construction process requirements are relatively high. Even though its material strength is hard, on-site processing is very difficult. Therefore, the probability of being selected in the renovation project is low.

4, aluminum plastic composite pipe

Aluminum-plastic composite pipe is a kind of pipe material that is more popular on the market. Due to its light weight, durability and convenient construction, its flexibility is more suitable for use in home furnishings. Its main drawback is that when it is used as a hot water pipe, due to the long-term thermal expansion and contraction, the pipe wall may be misaligned and cause leakage.

5, stainless steel composite pipe

Stainless steel composite pipes and aluminum plastic composite pipes are similar in structure, and to a certain extent, the performance is also similar. Also, the construction process is still a problem due to the strength of the steel.

6, PVC pipe

PVC (polyvinyl chloride) plastic pipe is a modern synthetic material pipe. However, in recent years, the scientific and technological community has discovered that chemical additives that can make PVC more flexible will have a great impact on the kidneys and liver of the human body, leading to cancer, kidney damage, and disruption of the human body's functional reengineering system, affecting development. In general, because its strength can not be applied to the pressure requirements of water pipes, it is rarely used in water pipes. In most cases, PVC pipes are suitable for wire and sewage pipes.

7, PP tube

PP (Poly Propylene) tubes are divided into various types, which are:

1, PP-B (block copolymer polypropylene) due to the use of welding technology in construction, it is also commonly known as hot-melt tube. Due to its non-toxicity, light weight, pressure resistance, and corrosion resistance, it is becoming a popular material, but at present, there are few choices for decoration projects. Generally speaking, this material is not only suitable for cold water pipes, but also suitable for use. In hot water pipes, even pure drinking water pipes. → Related reading: How to identify PPR pipes directly from the appearance

2, PP-C (modified polypropylene copolymer) pipe, performance is basically the same as above.

2, PP-R (polypropylene random copolymer) pipe, performance basically the same as above.

The physical properties of PP-C (B) and PP-R are basically the same, the application scope is basically the same, and can be replaced in the project. The main difference is that PP-C (B) material is superior to PP-R in resistance to low temperature brittleness; PP-R material is better in heat resistance than PP-C (B). In practical applications, when the liquid medium temperature is ≤5°C, the PP-C(B) tube is preferred; when the liquid medium temperature is ≥65°C, the PP-R tube is preferred; when the liquid medium temperature is 5°C-65°C In the inter-zone, PP-C (B) and PP-R have basically the same performance.

Second, pipe installation considerations

In the decoration, waterproofing is often more important than any topic. What should you watch out for when installing and using the pipe?

1. The installation pipeline must find a professional mechanic. No matter how luxurious and upscale your decoration, if you are not willing to spend money in this area, it is not worthwhile. Frequent bursts or leaks in the pipeline will cause the pipe itself to cost tens, hundreds, or even thousands of times more.

2. The boost test must be performed after installation. Pressurization tests are generally performed at 1.5 times the water pressure, and there should be no leakage during the test.

3. Test methods under no pressure:

1) Close the water main valve. (ie water meter switch in front of meter)

2) Open the faucet inside the room for 20 minutes to ensure that no water is dripped and then close all taps.

3) Turn off the water inlet switch of the water storage device such as the toilet tank and washing machine.

3) Open the main valve of the water pipe.

4) Check whether the water meter is moving 20 minutes after opening the main valve, including slow walking.

If there is movement, it is leaking. If you don't move, it's okay.

4, In daily use, if you find the following conditions, check the relevant pipeline as soon as possible:

1) Mild foam on the surface of the wall paint.

2) The baseboard or wooden floor is black and the surface appears fine foam.

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