In the decoration of the house, it is not as insignificant as the hydropower project, but it is so important. It is inconspicuous because it hides in the wall and cannot be seen or touched. Many people may consider designing, decorating, and other external things. Instead, they rarely pay attention to this internal detail. It is important to say that it is Because once a problem arises, such as water leaks and bursts, you often find yourself in a state of unfitness and suffering. Therefore, it is futile for the “hidden project†to fail to be completed and the surface to be beautifully decorated.
The first step in doing a good job in hydropower projects is to choose a good quality hydropower pipe. However, once you get to the building materials city, you will find that the pipes used for decoration are dazzling. I really don't know what to choose. There are PPR pipes, copper pipes, aluminum plastic pipes, PVC pipes, stainless steel pipes, etc., which have various materials and different materials. The prices are also uneven, and the price difference between the lowest price and the most expensive price is nearly 10 times. In addition to the differences in professional performances such as pipe diameter, wall thickness, and pressure level, there are also many fake and shoddy products that use the name of “å‚å牌â€. Here we remind everyone to take this lightly and choose the pipe to “control the waterâ€.
Domestic: PR pipe dominates the mainstream
“As a pipe for hydropower projects, it has been updated several times in just two or three years.†According to Zhao Taiyu, registered house inspector of Woodpecker Decoration Supervision Company, the earliest were stainless steel pipes, galvanized steel pipes, then aluminum plastic pipes, and then included PPR. Plastic tubing, among others, is the thin-walled copper tube currently connected with the world.
Among them, galvanized pipes and PVC pipes have almost been eliminated. Aluminum composite pipes, copper pipes and stainless steel pipes have their own actual usage in home decoration due to their own defects or high prices. Now the PPR pipe is the most commonly used one.
However, "these pipes have not passed the test of time. In recent years, the overall piping system problems in some buildings have caused many hidden troubles in previous years." For example, turbid yellow water flows out of galvanized pipes, and aluminum-plastic pipes are under pressure. Explosive when cracked. Even if it is a mainstream PPR pipe, there are some problems: in the long-term use, there will be precipitates, and the harm to the human body has not yet been conclusive.
Foreign: The most widely used brass
What kind of pipe is the best quality? It is understood that the copper pipe is the most widely used internationally. Copper pipes have obvious advantages in terms of high and low temperature resistance, strength, environmental protection and hygiene. Copper pipes occupy a monopoly in water supply and drainage systems in developed countries or regions. For example, in Hong Kong, copper pipes account for about 70% of the market, and domestic water systems in residential buildings are required to use copper pipes. Older developed countries such as the United Kingdom have higher copper penetration.
However, in China, the use of copper pipes has been low. Wuhan Lucky Group Wu Jianji, model homeroom and craft lecturer, told reporters that “in addition to the costly factors, it also has a lot to do with the concept of use by everyone.†In the domestic urban market, according to optimistic estimates, there is approximately 10% usage rate. At present, copper pipes are mainly concentrated in high-end users, such as five-star hotels and high-end residential communities. “In contrast, the bursting of water pipes in these places will be significantly less.â€
Tips:
How to buy PPR tube
Just purchased a new home, many people are busy decorating their love nest. How to choose the right pipe at the right price is an important thing for them. The following tips will teach you how to identify the PPR tube.
1. "Touch": whether the texture is delicate and whether the particles are even. At present, PPR pipes on the market are mainly in several colors of white, grey and green. Under normal circumstances, recycled plastics cannot be made white, so many people think that white is the best. In fact, this view is more one-sided. As technology has improved, color is not a criterion for discriminating PPR tubes. The quality of the pipe does not solve the problem. If it is touched, it is likely that the coarse particles are mixed with other impurities.
2. "Smell": There is no smell. The main material of the PPR tube is polypropylene. Good tubes have no odor, and bad ones have a strange smell. It is very likely that polyethylene is blended instead of polypropylene.
3. "Kneading": PPR pipe has a considerable hardness, and it can be shaped into a deformable pipe, which is certainly not a PPR pipe.
4. "ç ¸": Good PPR pipe, "Resilience" is good, too easy to shatter natural PPR pipe is not good. However, the hardness is not equal to the flexibility, and we have no doubt about the PPR tube that cannot be broken. Because some unscrupulous manufacturers increase the hardness of pipes by adding too many impurities such as calcium carbonate, such pipes are prone to embrittlement for a long time.
5. "Burn": Igniting a fire, very intuitive and very useful. PPR pipes that contain recycled plastics and other impurities in their raw materials will emit black smoke and have a pungent odor; good materials will not only emit black smoke and odor after burning, but the burnt-out liquid will remain clean after burning.
Five types of pipe strengths and weaknesses Competition
PPR pipe: cost-effective and environmentally friendly
As a new type of water pipe material, PPR pipe has unique advantages. It can be used as cold water pipe or hot water pipe. The interface of the PPR pipe adopts hot-melt technology, and the pipes are completely integrated. Therefore, once the pressure test is passed through the installation, the phenomenon of aging water leakage will not occur as long as the aluminum-plastic pipe.
Advantages: moderate price, stable performance, heat and heat insulation, corrosion resistance, smooth internal wall, non-fouling, safe and reliable pipe system, does not infiltrate, and the service life is up to 50 years.
Disadvantages: High technical requirements for construction, the use of special tools and professionals to carry out construction in order to ensure the safety of the system.
Brass: corrosion-resistant and bactericidal
It is the superior product in the water pipe. There are two types of copper pipe joints: card sleeve and welding. The card sleeve is the same as the aluminum plastic pipe. There is a problem of aging leakage for a long time. At present, most of the copper pipes are installed by welding. Welding is the welding of oxygen at the interface. This way, it can be as leakproof as PPR pipes. Because of its high price, it is generally used in high-end apartments or villas.
Advantages: high strength, stable performance, sterilization, and not easy to corrode.
Disadvantages: The price is high and construction is difficult. In the cold winter, it is easy to cause heat loss, energy consumption, and high cost of use.
Aluminum plastic pipe: easy to aging and leaking
Aluminium-plastic pipes were once more popular in the market. The current market is famous for Nifeng and Kinder. Because of its light weight, durability and easy construction, its flexibility is more suitable for use in home furnishings. In the relatively new concept of decoration in Guangdong and Shanghai, aluminum-plastic pipes have gradually disappeared from the market and they are products that have been eliminated.
Advantages: The price is cheaper, bending freely, smooth surface, convenient construction.
Disadvantages: easy to aging, the use of hidden dangers, the use of a short period of time, practice has proved that after one year of use, its pipeline connection is prone to leakage.
Galvanized pipe: easy to plug and easy to pollute
For a long time, if you don't use the water pipe, you suddenly discovered that the outflow was "yellow" water. In the old house, galvanized iron pipes were very prone to such a thing. This "yellow" water is also harmful to the human body. The four ministries and commissions of the Ministry of Construction of China also issued a document to explicitly ban galvanized pipes from 2000. At present, galvanized pipes have rarely been used for cold water pipes in newly constructed communities.
Advantages: complete varieties, fittings and more.
Disadvantages: It is a product that is banned from use by the country and is prone to corrosion and rust, resulting in poor water flow and easily contaminating water sources.
PVC pipe: easy to break easily deformed
In fact, it is a kind of plastic pipe, and the interface is generally glued. Because of its poor resistance to freezing and heat, it is difficult to use as a hot water pipe; strength is also not suitable for pressure requirements of water pipes, so cold water pipes are rarely used. In most cases, PVC pipes are suitable for wire and sewage pipes. In addition, chemical additives that make PVC softer have a great impact on the kidneys, liver, and testicles in the human body and can cause cancer and kidney damage.
Advantages: Lightweight, easy to install, low cost, and non-corruptible.
Disadvantages: poor quality will be very brittle, easy to break, easily deformed when exposed to heat.
The hot and cold water pipes use the same color and are bundled together
Bury pipelines to avoid "pipe surges"
In the installation of pipes, the following types of “violation†operations are most likely to occur: if unauthorized modification of pipelines; for aesthetics, water pipes are taken from the wall or underground; some construction workers are convenient, and buried the lines directly when buried. Plastering, without using PVC sheathed wires; some of them have tubes, but the middle wire has twists, joints, etc.; or it bends the PVC tube directly where there is a curve, without using the matching bender tool or Matching elbows... Such details may seem insignificant, but in reality there are many hidden dangers, but it is easy for everyone to “ignoreâ€.
When most of the new houses were completed, the hydropower project was basically laid. As a “hidden projectâ€, hydropower can be broadly divided into water installation, electrical installation, moisture protection, and waterproofing. Many experienced decoration masters will be embarrassed. The principle of construction of hydropower projects is that they cannot be moved without moving. It is not easy to change; it is dark and dark, and there is no open line. This shows the particularity of this project. Therefore, this project Not only do the materials require quality assurance, they also try to be scientific and standardized in design and construction.
For some home improvement companies, hydropower projects are their most important profit point. In addition to common shoddy and price trickery, the prevailing unscientific construction and non-standard operation directly plague the daily use of occupants. In life, we do not lack such experience: the bathroom ceiling always drip down, and the floor drain fails to cause the family to “sweet†the mountain. These are often the “blights†that are laid inadvertently during the renovation process. To avoid such accidents, it is still the old saying that prevention is better than prevention.
Water pipe selection is the safest
In conditions permitting and ensuring that the water supply is convenient and safe, the water pipe shortens its lines as much as possible and avoids and reduces right angle bends (except for hard pipe and open line arrangements). It is best to first determine the position of the toilet bowl and wash basin and the floor drain, and then compare the original drain outlet connection line, in principle, the shorter the distance from the outlet, the better. In addition, in the construction of water pipes, it is necessary to prevent the clogging of sewers. Before the construction, it is necessary to protect the drains and floor drains from being closed to prevent the entry of cement, gravel, and other debris. Once the cement and mortar block the passage, it will be extremely difficult and will cause great trouble.
“It is safest to walk the top of the water pipe.†According to experts, the majority of the waterway reforms are mostly piped down, and the characteristics of the water are that the water flows down. If the pipeline goes underground, it is difficult to find the leaking water in a timely manner. Only if the “swimming water†or the floor deforms and leaks downstairs, will it be discovered that the water leaks, and it is difficult to detect the leak due to the buried pipe. At this time, the huge losses are even more irreversible. They have even seriously affected friendly neighborhood relations; if the water pipes are at the top, the cost of water reform may be higher, but as a long-term investment, it is worthwhile. When the water pipe is at the top, even if it leaks, it can be discovered in time and is easy to overhaul. The loss is also small.
Tips: After the water supply pipe is installed, be sure to use a pressure machine to hit 6 to 8 atmospheres, 30 minutes or 1 hour, no leakage phenomenon, should not be replaced by tap water; after decompression 2 to 3 hours, To seal the tube, no pressure test can not be sealed.
Wires need to be reinserted into the wall
The electrical wiring project must be carefully designed by the electrical engineer before the circuit diagram can be constructed, so that the owner is convenient and safe to use in daily life. Among them, the lighting line and the outlet line should be controlled separately, and the wire is 2.5 square millimeters. Kitchen electricity, air-conditioning electricity and jacuzzis must use special lines. The wire is 4 square millimeters. Leakage protection devices should be approximately 20% to 30% amperes smaller than the total power used at the same time for common household appliances. In addition, when installing the line, we must strictly abide by the "fire line into the switch, the zero line into the lamp left and right fire, grounding on the" provisions.
During the construction, the wiring lines must be up and down vertically, left and right straight, the wires must be covered with PVC pipe and fittings, and the shear wall or load-bearing wall that cannot be destroyed must be covered with anti-wax pipe insulation material.
Tips: After the completion of construction, in addition to the necessary power check, remember to ask the home improvement company's construction team for a detailed circuit configuration drawing for other purposes.
Prevention of "pipe misrepresentation":
Field measurement
Hydropower construction is charged according to the actual construction line and project volume, and it is a link that is easy to cut corners in decoration. After the construction, it is difficult to check and calculate the amount of work after the pipeline is covered. Therefore, before the electrician is constructed, you should ask him to take the line at the wall, ground, and top of the pipeline, and take a measurement according to the actual payoff. In this way, when you are in construction, you can inspect it. The quantity and cost of the renovation will also be pre-emptive, so as to avoid wrangling after construction. At the same time, because you have a prior understanding of the route through measurement, you can also see the problem in the future when checking the hydropower diagram.
Links: Attention should be paid when installing hydropower projects
1. Do not break the original wire or plumbing pipe when drilling. When the electrical conduit is laid, it is necessary to thread the conduit. Do not bury the wire directly on the ground or in the wall. This is not only unsafe, but it cannot be repaired once it is damaged. After the plumbing pipe is applied, the plumbing pipe must be pressure tested. After the pipe is qualified, the next process is performed to prevent the pipe from leaking and causing damage.
The bathroom is not leaking due to water leakage. According to the standard, the bathroom should be treated with water, and the water proof test should be done.
Second, the kitchen and bathroom need to do waterproof parts, after the completion of the water must be closed water test, after qualifying posted.
Unused waterproof socket for bathroom
Third, wire connectors must be tinned, the joints of the kitchen and bathroom are recommended to do waterproof treatment, joints can be used high pressure self-adhesive tape and black tape for dressing.
Fourth, the weight of more than 3 kilograms of lamps, must be fixed on the bolt or embedded hook, banned the use of wooden wedge fixed; installation height of less than 2.4 meters lamp metal shell must be protective grounding, the toilet must use waterproof socket.
According to the specification, the parallel distance between the wire and the water pipe and the gas pipe should not be less than 300mm, and the crossing distance should not be less than 100mm.
Fifth, the circuit construction must be standardized, for example, the diameter of 16mm line tube to wear up to 3 lines; strong and weak wires to more than 50cm to avoid signal interference; concealed line tube to be fixed firmly, otherwise the wall is easy to crack.
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