Weak current College】 【drainage pipe acceptance of knowledge.

<br> <br> <br> For home decoration, drainage pipe mainly about pipeline components. On the market, the flower of the pipeline material five hundred doors, users often feel not to. So what those types, and the right to use .?, we will analyse in detail. <br> 1. pipe type <br> 1, galvanized iron pipe <br> Galvanized iron pipe is the usage of a material, due to corrosion of galvanized iron pipe caused heavy metal concentrations in water is .too high, affect human health, many developed countries and regions, government departments have begun to ban the use of galvanized iron pipe. At present China is gradually eliminated this type of pipeline. <br> 2, brass <br> A more traditional but .expensive piping materials, durability and the construction of more convenient. In many imported bathroom products, copper tube is the first choice. Price is its usage of the major reason why Moreover copper corrosion is one of the factors. <br> 3. stainless steel .tube <br> Stainless steel pipe is a more durable piping materials. But its price is high, and construction techniques that require higher, its the material strength is hard, on-site machining difficult. Therefore, in the decoration of your chances of being .selected. <br> 4, aluminum-plastic composite pipe <br> Aluminum-plastic composite pipe is more popular on the market at present, a pipe, due to its light weight, durable and easy, it may be more appropriate for the bending .in home decoration. Its main disadvantage is in use as a hot water pipe, due to long-lasting heat will cause the tube wall dislocation resulting leakage. <br> 5, stainless steel clad pipes <br> Stainless steel compound pipe and aluminum- .plastic composite pipe is structurally similar to a certain extent, the performance is relatively similar. Similarly, because of the strength of steel, construction process remains a problem. <br> 6, PVC pipe <br> PVC (PVC) plastic pipe is a .modern synthetic material pipe. But in recent years in the technology sector found that makes PVC becomes more supple chemical additives phthalate, on the human body the kidney, liver and testis plays a big role, can cause cancer, kidney damage, damage to the human .body function recycling system, affecting development. Generally speaking, because of its strength is far from suitable for mains pressure requirements, so rarely used for water pipes. In most cases, PVC pipes for wire and pipe and sewage piping. <br> 7, .PP pipe <br> PP (PolyPropylene) tube is divided into multiple, respectively: <br> 1, PP-B (block copolymer polypropylene) in construction techniques with soluble, also commonly known as thermal stripping. Because of its non-toxic, .light, pressure resistance, corrosion resistance, is becoming a promotional materials, decoration works chosen also relatively small, generally speaking, this kind of material is not only suitable for cold water pipes, also suitable for hot water pipes and even pure drinking water pipes. .<br> 2, PP-C (modified copolymer polypropylene) pipe, performance basic ibid. <br> 2, PP-R (copolymer) pipe, performance basic ibid. <br> PP-C (B) and the physical characteristics of .the basic PP-R, similar to the range of application is basically the same, the project can be replaced. The main difference to PP-C (B) material is superior low-temperature brittle PP-R resistance; PP-R materials bear .the heat better than PP-C (B). In practice, when the liquid medium temperature ≤ 5 ℃, preferred PP-C (B); when the liquid medium temperature ≥ 65 ℃, preferred pp-r pipe; when the liquid medium .temperature 5 ° c-65 ° c when, between regional PP-C (B) and the use of basic performance PP-R unanimously <br> Second, pipe installation considerations <br> In decoration, waterproof, more often than any of the .same topic is even more important. In the pipeline installation and use of process requires attention to those matters? <br> 1. install the pipeline must find professional craftsmen. No matter what your decorating luxury, if you are not willing to spend money, .not cost. Often pipeline bursts crack or leak, causing the pipe itself price dozens of times, hundreds of times, even the loss of thousands of times. <br> 2. after the installation of a pressure test must be. Booster test generally in .1.5 times water pressure, the tests should not leaking phenomenon. <br> 3. in the absence of elevated pressure test methods: <br> 1) close pipe valve. (Ie water meter in front of the main switch) <br> 2 .) open the tap room, 20 minutes to ensure that no water droplets after closing all the taps. <br> 3) close the toilet and washing machine, a water storage devices into the switch. <br> 3) open water valve. < .br> Total 4) to open the valve after 20 minutes walk to see whether the meter, including slow walk. <br> If there is a move that is leaking. If you do not move, that is okay. <br> 4, .daily use, if you find that the following conditions, as soon as possible examine the pipeline: <br> 1) wall paint surface mold out of the bubble. <br> 2) tijuexian or wooden floor surface blackening and appears fine bubbles. < .br> <br> Drainage pipe basic requirements: <br> 1. drainage pipe and pipe fittings of quality must meet standard requirements, the drain should be rigid PVC drainage pipes, pipe fittings. <br> 2. construction before checking whether the original .pipe unblocked before construction, construction and then check whether the pipeline. Hidden water service pipe shall be checked, the new water supply pipe must be carried out by the relevant provisions, pressure testing should be inspected without leakage, before entering the next procedure. < .br> 3. drainage pipe should be before construction of oil pipeline temporary seal, avoid debris into the pipeline. <br> 4. the outer diameter of 25 mm pipes for installation, piping in a corner, tap or tap for water meters, and .pipeline terminals should be set at 100 mm pipes, pipe installation must be secure. Adoption of the whorl, pipeline in its connection should have exposed threads is installed should be fixed with pipe clamp, pipe fittings and pipes or valves shall loose between. <br .> 5. install various valve position should meet the design requirements, ease of use and maintenance. <br> 6. all fittings, valves and piping connections should be strictlyUM, no leakage, pipe slope should meet the requirements. <br> 7. .various kinds of pipelines shall not alter the nature of the original pipeline. <br> <br> Drainage pipe acceptance method <br> <br> 1. pipe arrangement should meet the design requirements, pipeline installation should be fixed firmly, without loosing the .faucet, valve installed flat, open and flexible, the water flow, the water meter is working properly. Use Visual and feel of acceptance. <br> 2, pipes and appliances, plumbing and piping connection should be no leakage. Use of water, .Visual and feel way to check for leaks. <br> 3, water pipes installed shall not close to power, water and gas pipe spacing should be not less than 50mm, steel tape measure to check. <br> <br> (See: .water supply and drainage pipe construction and acceptance implementation manual Xu qichang editor-in-Chief) <br> <br> <br> <br>.