For the owners of the decoration, choosing the numerous hydropower materials is the first step in the long procurement process. Faced with many materials I do not know where to start? I do not know what to choose when buying accessories? Please enter the water circuit we have prepared for you to choose the Raiders, easy to get the water and electricity materials.
>>> Links: 10 kinds of scientific energy-saving design methods in decoration
Circuit
â– Strong electricity
Consider the use of electrical power
According to Han Haitao, director of the engineering department of Kuda Decoration Beijing Branch, strong electricity should be selected based on the power of the appliances in the home. In general, there are six or seven strong roads at home, such as lighting lines, socket lines, high-power electronic circuits (cabinet walks alone, disinfection cabinets in the kitchen may go all the way, high-power water heaters in the toilet, etc. also go all the way) In addition, a spare line is also needed to prevent accidents.
Wires currently on the market have 1.5 mm2, 2.5 mm2, 4 mm2, 6 mm2, and 10 mm2 wires. Wang Chicun, general manager of the Hongli Boya Decoration Company, said that the 2.5 square millimeters and 4 square millimeters of wires for home life are basically sufficient.
Visiting the building materials market and supermarkets have seen that wires are sold by meters, but also by whole rolls, such as 20 meters, 50 meters, and 100 meters. In general, the whole price is cheaper than the single purchase price. If a decoration company is chosen, the decoration company usually provides the wires and the corresponding accessories.
â– Accessories
Emphasizing quality on-demand material selection
☆Line tube: There are two kinds of materials, one is the PVC flame-retardant tube commonly used in home decoration, and the other is the galvanized iron tube commonly used in public installation. The tube is 16 mm thick and is also 20 mm thick. The thickness of the two is different, the key is to see the depth of the wall can be grooved.
☆ tube card: used to fix the line tube.
☆ junction box: junction box, socket cassette, lamp box and so on.
☆ Hose: Mostly used for junction boxes and downlights Plastic or metal materials.
â– Weak electricity
Choose specifications according to your life plan
Weak electricity includes telephone lines, network cables, cable television lines, audio cables, video cables, and audio cables. Although the specifications are high or low, Wang Chi-Cun said that when selecting weak electricity, it is necessary to decide whether to select high-standard products according to the owner's own life plan.
☆ TV line currently generally choose four-layer shielded coaxial cable, the most important thing is to select the TV line is to see whether the cable layer is tight, the more closely that the shielding function is better, the more clear the TV signal; also can see the thickness of copper wire The thicker the copper wire, the better its antimagnetic and anti-interference signals.
☆ audio line building materials supermarket is common 200-core and 300-core line. In general, 200 cores can meet basic needs. If the sound effects are very demanding, such as abnormal sound, etc., consider the 300-core audio cable.
☆ Network cable sales are generally super five-shielded and unshielded cable. The former is a hundred megabit speed, and even if there are multiple computers in the home, it can meet basic needs and the shielding effect is better. The latter is a Gigabit speed and has a poor shielding effect.
☆ The telephone line has two cores and four core single share telephone lines. The 2-core single share telephone line can meet the general demand, and the 4-core line can meet the needs of installing two different telephone numbers at home. In addition, there are two lines for the 4-core single share telephone line. The other lines are broken and the relative risk is relatively small. Of course, the price difference between the two is about RMB 1/m.
â– Purchase common sense
A look two-fold three check
Because many circuits are hidden projects, if there are problems or need to be modified, the project is vast and not beautiful. Therefore, it is especially important to select the appropriate circuit before making circuit modifications. In the face of all kinds of wire products on the market, how should consumers choose? Han Haitao and Wang Chicun gave some suggestions.
Wang Chiceng believes that there are high and low wire specifications, but it is necessary to choose according to their own conditions, not as expensive as possible, but also consider longevity. For example, 4 square millimeters of sufficient wires do not need to buy 6 or 10 mm2 wires. However, if telephone lines, network cables and other products are intended to live for a long time, it can foresee changes in future life such as video telephony and other factors, and in conjunction with cost estimates, consider whether one-time placement is in place. If you only live temporarily, you can buy enough products and you don't need to purchase advanced products.
The choice of wire depends on the insulation properties. The first is to see whether the insulation is damaged, whether the thickness is uniform, whether the core is wrapped tightly, etc.; depends on the smoothness of the copper core. Secondly, you can fold the wires by one fold. The stronger the flexibility, the better. Check the inspection report, check the date and other factors. "Generally speaking, there are no problems in conformity with the national standards." Both experts believe that it is best to purchase electric wire products at regular stores and supermarkets; it is better to buy brand products; audio and TV lines and other products can be purchased. Acoustic TV when buying ancillary products, more secure.
>>>Links: How to Pick and Install PPR Hose
Waterway
â– Water supply pipe
The water pipe is the most important material to be used in waterway reconstruction, and it is the walking channel for water supply. According to the use of the use of cold water pipes and hot water pipes. According to the size, it is mainly divided into 4 points and 6 points. Galvanized pipes and aluminum-plastic pipes have been eliminated one after another, while copper pipes and stainless steel pipes are rarely used in home renovation because of their high cost, and the most commonly used pipes on the market today are PPR pipes.
☆ galvanized pipe
In the 1980s and 1990s, most of the old houses used galvanized pipes. At present, the state has stipulated that the use of household decoration as a water pipe material is not used.
☆Aluminum plastic tube
Made of metal aluminum and plastic, the outside is plastic and the inside is aluminum. Aluminum plastic pipe has a certain toughness, high temperature, can be coiled, can be arbitrary cut, easy to transport, easy to install, easy construction, low loss. The disadvantage is that the interface must be made of metal pipe fittings. During use, it is likely to cause water leakage due to hydraulic impact or thermal expansion and contraction. Although the aluminum-plastic pipes were also used as cold and hot water pipes at the time of early decoration, the insulation performance of the aluminum-plastic pipes is poor compared with the PPR pipes that are commonly used nowadays, and it is not suitable to use hot water pipes.
☆PPR tube
Material is PPR. Due to its non-toxic, non-fouling, non-pollution, light weight, pressure resistance, corrosion resistance, and long service life, PPR pipe is highly respected and has been widely used. The interface adopts hot-melt technology. At a high temperature of 280 degrees, the tubes are completely integrated with each other and do not leak into the water as easily as aluminum-plastic pipes.
PPR pipe is divided into cold water pipe and hot water pipe. The treatment process of the two is slightly different and must be used differently. According to Jin Jiang, head of the customer service department of the industry, some guerrillas use cold water pipes instead of hot water pipes in order to save money. Thermal expansion and contraction easily lead to deformation of pipes, which not only affects the service life of the pipes, but also may cause Leaking water. Under normal circumstances, the red line of the pipe is the hot water pipe, and the blue line is the cold water pipe.
☆ Copper tube
Copper pipes have the advantages of corrosion resistance, elimination of bacteria, etc., and are superior products in the water pipes. However, the cost is particularly high, and they are currently only used in a few high-end communities and villas. The interface method of the copper pipe is welded, ie, the interface is welded together by oxidation, so that, like the PPR pipe, the leakage probability is greatly reduced. The paradox is that in order to avoid fires, the use of open fire in the home improvement process is not advocated. This is one of the reasons why copper pipes are not advocated. In addition, because the metal material conducts heat quickly, when the copper pipe is used as a hot water pipe, a special insulation material is used to wrap the layer.
☆stainless steel tube
The performance of stainless steel pipes is similar to that of copper pipes, but they are more beautiful than copper pipes and their cost is not low. Therefore, they are rarely used as water pipes. Most of the stainless steel pipes on the market are tough, coiled and spiral. In most cases, this tubing is used only as a tap or single tap.
â– Drainage pipe
Compared with the water supply pipe, the drainage pipe does not require high pressure and environmental protection. The most important reference factor is the service life. The drain pipe is mainly divided into cast iron pipe and UPVC pipe.
☆Cast iron pipe
Pig iron as the main raw material, black is not very beautiful, but easy to oxidation, rust, cast iron pipe was gradually eliminated in the early 90s.
☆UPVC pipe
It is actually a kind of white plastic pipe with beautiful appearance and long service life. It is a commonly used drainage pipe.
â– Pipe fittings
In addition to pipes, one of the most important materials to be used for waterway reconstruction is fittings. Pipe fittings are accessory parts that need to be used to change the direction of the waterway, increase the water outlet, and connect the interface. There are many types and names are not uniform. Do not look at these are small, but according to a number of experts in the industry, more than 90% of runoffs and leaks are related to fittings at the interface, so consumers can be sloppy at the time of purchase.
According to the manager of Longfa Decoration Engineering Department, whether it is a galvanized pipe, an aluminum-plastic pipe, a PPR pipe or a copper pipe, the fittings and names of the fittings are the same, but the materials are different. Since the stainless steel pipe is not used as a main pipe, there are few accessory pipes.
In accordance with the use of points, pipe fittings are divided into straight through, three links, elbow, curved pipe, valves, wall cards, caps, adapters and raw materials with 9 species. Straight-through is also called direct, and it mainly serves as a linear connection; the three-way connection is a pipe that increases one outlet to two, and there are outlets that increase the outlet to three, but it is rarely used in home decoration; when the waterway is redirected, To use the elbow, the elbow has two kinds of 45 degrees and 90 degrees; the curved pipe is used when the water line crosses; the valve is also the switch, there are two kinds of ball valve and angle valve, the switching mode of the two valves is omitted. There are differences, but the effect is the same; the wall card is also called the pipe card, which is the pipe used for the fixed pipe; the pipe cap is also called the plug and it is used when the unused pipe is closed; if the original water pipe of the house is the PE pipe, decoration When you want to use adapters, because the home improvement process basically does not use PE pipe, one end of the conversion joint is PE material, one end is PPR material, can achieve two kinds of material conversion; metal interface prone to loose, when the assembly, The use of raw tape can make the interface more sealed and reduce the chance of leakage.
Straight through, three links, elbows, and curved tubes are all common, inner wire, outer wire and different diameter four forms. The so-called ordinary form means that the size and material of the two ends of the pipe are not changed; the inner wire is also called the inner tooth, and the pipe fittings with a metal groove at one end can be called the inner wire, such as a certain metal wire groove at the end. The inner wire is straight through; the inner wire is the opposite of the outer wire, also called the outer tooth, that is, the end of the tube has a metal flange; the different diameter is the size of the two ends of the tube, which is 4 points at one end and 6 points at the other end.
Purchase common sense
Regardless of whether to purchase pipes or fittings, you must first carefully read the product specifications and certificate to understand the product performance indicators. When selecting the PPR pipe, it is preferable to select the pipe whose pipe wall is uniform and the wall of the pipe is smooth from the appearance. When selecting fittings, it is necessary to select the fittings fitting the pipe. It is better to choose the matching fittings of the same brand. It also depends on whether the wall thickness of the pipe fitting is even and whether the pipe wall is smooth or not. The threaded fittings also need to pay attention to whether the threads are evenly distributed.
Many experts in the industry have stated that “the most secure method is to purchase materials in a large, formal marketâ€.
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