What are the advantages of double wall corrugated pipe

High-density polyethylene (HDPE) has excellent chemical stability, aging resistance and environmental stress cracking resistance. The HDPE double-wall corrugated pipe produced from it is a flexible pipe. Its main performance is as follows: Strong resistance to external pressure The outer wall has a ring-shaped corrugated structure, which greatly enhances the ring stiffness of the pipe, thereby enhancing the resistance of the pipe to soil load. In this performance, the HDPE double-wall corrugated pipe has obvious advantages compared with other pipes. low engineering cost Under the same load condition, HDPE double-wall corrugated pipe only needs thinner pipe wall to meet the requirements. Therefore, compared with the solid-wall pipe of the same material and specification, it can save about half of the raw materials, so the cost of the HDPE double-wall corrugated pipe is also lower. This is another very prominent feature of the pipe. Easy to construct Due to the light weight of the HDPE double-wall corrugated pipe, the handling and connection are very convenient, so the construction is fast and the maintenance work is simple. Tight schedule and construction In the case of poor conditions, its advantages are even more obvious. Small friction coefficient, large flow The HDPE double-wall corrugated pipe made of HDPE can pass a larger flow than other pipes of the same diameter. In other words, under the same flow requirements, HDPE double-wall corrugated pipes with relatively small diameters can be used. Low temperature impact resistance The embrittlement temperature of HDPE double-wall corrugated pipe is -70℃. Generally, it is not necessary to take special protective measures during construction under low temperature conditions (above -30 ℃), and the construction in winter is convenient. Moreover, the HDPE double-wall corrugated pipe has good impact resistance. good chemical stability Since HDPE molecules are not polar, they are chemically stable. Except for a few strong oxidants, most chemical media have no destructive effect on it. The soil, electricity, acid and alkali factors of the general use environment will not damage the pipeline, breed bacteria, and scale, and its flow area will not decrease with the increase of operating time. long lasting The service life of HDPE double-wall corrugated pipe can reach more than 50 years under the condition of not being exposed to sunlight and ultraviolet rays. Excellent wear resistance Germany has used tests to prove that the wear resistance of HDPE is even several times higher than that of steel pipes. proper deflection A certain length of HDPE double-wall corrugated pipe can be slightly deflected in the axial direction, not affected by a certain degree of uneven settlement of the ground, and can be directly laid in a slightly non-straight groove without pipe fittings. · Reasonable structure and beautiful appearance ·Temperature resistance -40℃-60℃ ·Small resistance, large flow ·Strong flame retardancy ·Long service life ·Reliable hygienic performance ·Low overall cost ·Acid and alkali resistance and corrosion resistance ·High strength, strong seismic performance ·Energy saving ·Easy to install and transport

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What problems should be paid attention to when installing PVC drainage pipes

Matters needing attention in the installation of PVC drainage pipes in high-rise buildings (1) Sewage adopts PVC-U core foam drainage pipe, adhesive and flange interface. (2) According to the requirements of the drawings, combined with the actual situation, measure the size according to the position of the reserved opening, and draw the processing sketch (3) Measure the pipe size according to the sketch, and then break the pipe. The fracture should be flush, use a file or scraper to remove the flying spurs inside and outside the fracture, and file the outer edge at an angle of 15°C. (4) Before bonding, the socket and socket should be inserted into the test first, and not all of them should be inserted. Generally, it is 3/4 of the depth of the socket. After the test insertion is qualified, use a cotton cloth to wipe the moisture and dust of the socket to be bonded. If there is oil pollution, acetone is required to remove it. Apply the adhesive with a brush, apply the socket first and then the socket, and then insert it vertically with force. When inserting and bonding, turn the socket a little so that the adhesive is evenly distributed, and it can be firmly bonded in about 30-60 minutes. (5) When installing plastic drainage pipes, lead wires can be used to temporarily hang them for pre-installation. Adjust the coordinates, position, pipeline elevation and slope of the opening to meet the design requirements for bonding, and correct the coordinate position and elevation slope of the opening in time. After the bonding is cured, install the fixed support, but it should not be clamped too tightly. When a metal bracket is used, a rubber gasket must be placed in contact with the outer diameter of the pipe. (6) Inspection ports shall be provided at the lowest and highest floors of the drainage riser, and the center of the inspection port shall be 1.0 meters away from the ground. (7) After the pipeline is installed, the pipe hole should be blocked in time, and the mold should be blocked according to the requirements of the specification. It is strictly forbidden to climb or borrow the pipeline after installation. According to the above installation method, it can not only achieve the purpose of normal operation of the drainage pipe, but also ensure the normal service life of the PVC drainage pipe. However, we also need to remind that during the use of the pipeline, we must also do a good job of protection, and prohibit strong activities such as stepping on or smashing.

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What are the pipes commonly used in building water supply projects?

PPR pipe, copper pipe, aluminum-plastic pipe, galvanized pipe, PVC pipe, thin-walled stainless steel pipe, PVC-lined stainless steel pipe. 1. PPR pipe: As a new type of water pipe material, PPR pipe has unique advantages, hygienic and non-toxic, and can be used as both a cold water pipe and a hot water pipe. Advantages: moderate price, stable performance, heat and heat preservation, corrosion resistance, smooth inner wall without scaling, safe and reliable pipeline system, impermeable, service life of up to 50 years. Disadvantages: However, special tools are required for connection, and the connection surface needs to be heated. If the heating time is too long or the socket is inserted too much, the water flow will be blocked. 2. Copper pipe: It is the first-class product in the water pipe. The order of copper in the chemical activity is very low, and it is lower than hydrogen, so it has stable performance and is not easy to corrode. According to relevant information, copper can inhibit the growth of bacteria and keep drinking water clean and hygienic. Advantages: high strength, stable performance, sterilization, and not easy to corrode. Disadvantages: high price and difficult construction. In cold winter, it is easy to cause heat loss, large energy consumption and high use cost. 3. Aluminum-plastic pipe: Aluminum-plastic pipe was once a popular pipe material on the market. Because of its light weight, durability and convenient construction, its bendability is more suitable for use in home decoration. In Guangdong and Shanghai, where the decoration concept is relatively new, the aluminum-plastic pipe has gradually lost its market and belongs to the eliminated product. Advantages: The price is relatively cheap, it can be bent arbitrarily, the surface is smooth, and the construction is convenient. Disadvantages: easy aging, many hidden dangers in use, short service life, practice has proved that the leakage phenomenon is very easy to occur at the pipe connection. 4. Galvanized pipe: When you open a water pipe that has not been used for a long time, you suddenly find "yellow" water flowing out. This kind of thing is very easy to happen in galvanized iron pipes in old houses. Such "yellow" water is also harmful to the human body. . Galvanized pipes have been banned since 2000. At present, galvanized pipes are rarely used in cold water pipes in newly built communities. Advantages: complete varieties, many pipe fittings. Disadvantages: It is an outdated product prohibited by the state, which is easy to corrode and rust, resulting in poor water flow and easy to cause water pollution. 5. PVC pipe: In fact, it is a kind of plastic pipe, and the interface is generally bonded with glue. Because its frost resistance and heat resistance are not good, it is difficult to be used as a hot water pipe; the strength is not suitable for the pressure requirements of water pipes, so cold water pipes are rarely used. In most cases, PVC pipes are suitable for electrical conduits and sewage pipes. In addition, the chemical additive phthalein, which makes PVC softer, has a great impact on the kidneys, liver and testes in the human body, and can cause cancer and kidney damage, so it is not recommended for everyone to buy it. Advantages: light, easy to install, low cost, and not easy to corrode. Disadvantages: Poor quality will be very brittle, easy to break, and easy to deform when heated. 6. Thin-walled stainless steel pipe: Thin-walled stainless steel pipe is corrosion-resistant and not easy to rust, safe and reliable to use, has strong impact resistance, and relatively low thermal conductivity. However, the price of stainless steel pipes is relatively high, and in addition, stainless steel models that are resistant to chloride ions in chlorine water in water should be used. Thin-walled stainless steel pipes are connected by welding, threading, sealing and other methods. Advantages: not easy to oxidize and rust, strong impact, low heat conduction. Disadvantages: high cost, stainless steel models that are resistant to chloride ions in water should be used. 7. PVC-lined galvanized steel pipe: PVC-lined galvanized steel pipe has the advantages of high strength and rigidity of metal pipe and corrosion resistance of plastic pipe, and also overcomes the shortcomings of the two types of materials. Advantages: There are many pipe fittings and complete specifications. Disadvantages: The actual diameter of the pipe used in the pipeline becomes smaller; when the ambient temperature and the temperature of the medium change greatly, it is easy to separate the layer and cause the quality of the pipe to decrease.

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Guangdong Shengda Plastic Technology Co., Ltd.

(Overseas Chinese board code:280329)

Tel:400-838-1218

Head Office: Room 301, Ultrasonic Technology Building, No. 9 Keji East Road, High-tech Zone, Shantou City, Guangdong Province

Production base: Guangdong Niutianyang Industrial Zone

网址:www.sdgy.com.cn

Fujian Xinshengda New Material Technology Co., Ltd.

Production base: No. 666, Ludi Industrial Park, Zhao'an Industrial Park, Zhao'an County, Zhangzhou City, Fujian Province

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