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HDPE double wall corrugated pipe
Product features: 1. Strong resistance to external pressure. The outer wall has a circular corrugated structure, greatly enhancing the circular stiffn
Product details
Product Features
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1. Strong resistance to external pressure
The outer wall has a circular corrugated structure, greatly enhancing the circular stiffness of the pipe and thus increasing its resistance to soil loads. In terms of this performance, HDPE double wall corrugated pipes have significant advantages compared to other pipes.
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2. Low engineering cost
Under equal load conditions, HDPE double wall corrugated pipes only require thinner pipe walls to meet the requirements, saving 40-60% compared to steel pipes; Compared with cement pipes, the overall cost is basically the same; Compared with similar HDPE hollow winding pipes, it can also save 20-40%.
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3. Convenient construction
Lightweight, with a tube weight of only 0.94-0.96g/cm, and a long length (with few joints), making it easy to transport and connect; Low requirements for pipe trenches and foundations, easy connection and fast construction; The advantages of double wall corrugated pipe buried drainage pipes are more obvious in crowded urban areas and geologically harsh areas (such as high groundwater levels and soft foundations).
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4. Low friction coefficient and high flow rate
The inner wall is smooth with a roughness K value not exceeding 0.01mm, while the molecular surface of HDPE material does not carry positive or negative charges. Impurities with charges in water will not adhere to the pipe wall to form scale, so the flow rate is high. It has good sealing performance, no leakage, and can effectively control the pollution of groundwater resources.
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5. Good low temperature resistance and impact resistance
The normal working temperature of HDPE double wall corrugated pipe is between -40 ° C and 60 ° C, and it can also be constructed normally in extremely cold temperatures of minus 30 ° C. Currently, HDPE pipes are one of the few pipes that do not crack when frozen. The impact strength of HDPE is one of the best among plastic pipes (PE, PVC, PP, ABS, PB, etc.).
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6. Stable chemical properties
Its chemical molecules are non-polar and have excellent chemical stability. Except for a few strong oxidants, most chemical media do not have a destructive effect on it. It does not breed bacteria, does not scale, and its circulation area will not decrease with increasing operating time.
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7. Superior physical performance
It has good flexibility, good dynamic fracture toughness KD value, good seismic resistance, and can adapt to uneven settlement of the foundation. It is currently one of the pipeline materials with excellent seismic performance.
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8. Long service life
The working temperature is generally between 12-28 degrees, and the normal service life can be guaranteed to be over 50 years. Polyethylene raw materials only contain two elements, carbon and hydrogen, which are harmless to the environment and environmentally friendly and healthy!
Application field
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1. Municipal engineering rainwater and sewage discharge, residential area drainage engineering
2. Industrial drainage, sewage treatment plants, and garbage disposal site drainage and transportation
3. Irrigation, water supply, and drainage of farmland water conservancy
4. Chemical ventilation and transportation of chemical and mining fluids
5. Protective conduit for low-voltage cables and communication cables
Product Parameters
PE double wall corrugated pipe connection method
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lower tube
According to the size of the pipe diameter, the condition of the trench and construction equipment, it is determined whether personnel or machinery will be used to place the pipe into the trench. Reliable lifting equipment must be used to smoothly lower the pipe into the trench, and it must not collide violently with the trench wall or bottom. There should be two supporting lifting points for lifting, and it is strictly prohibited to lift through the hole. The adjustment of pipeline length can be done by hand sawing, but the cross-section should be vertical and flat.
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clean up
The socket should be installed in the direction of water flow, while the socket should be installed against the direction of water flow, from the low point to the high point in sequence; When performing interface operations, the inner (or outer) working surface of the socket (or plug) should be cleaned first
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Apply rubber ring
The installation position of the rubber ring should be in the groove between the second and third waves of the interface. In special cases, when using two rubber rings, it is recommended to separate them by one wave
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lubrication
Put on the rubber ring, check if it fits well, and apply lubricant (usually soapy water) to the working surface inside the socket and the surface of the rubber ring. Align the center of the socket end with the center axis of the socket and place it in place
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connect
Align the water flow direction with the centerline of the socket using a special tool or a wooden stopper, and use a pry bar to slowly insert the installed pipe into the socket until it reaches the bottom.
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