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High-density polyethylene (HDPE) winding structure wall pipe (B-type pipe)
HDPE winding structure wall pipe is made of high-density polyethylene resin as the main raw material. It adopts hot-winding forming process and uses polypropylene (PP) single-wall corrugated pipe as the supporting structure.
Special structural wall pipe with high resistance to external pressure. The product has a smooth inner surface and a special-shaped reinforced structure on the outside. The standard length of the pipe is 6 meters and the inner diameter of the pipe is DN300-
DN4000, the product indicators have reached GB / T 19472. 2-2004 B-structure wall pipe standard and PREN-13476 European standard requirements.
Alias: Carat. Because this kind of pipeline was originally introduced by the German company from German carat company, this kind of pipe is commonly known in China as a carat pipe.
The diameter of a carat tube can be from 300mm to 4000mm. The diameter of two adjacent specifications can differ by 100mm. The nominal diameter of a carat tube is the inner diameter of the tube.
Therefore, when the ring stiffness or wall thickness of the pipe changes, the inner diameter of the pipe does not change, thereby ensuring that the water flow is not affected.
The nominal length of a carat tube is generally 6 meters. The carat tube body is divided into three parts, the first part is a socket, the second part is a pipe body, and the third part is a socket.
All three parts are molded in-line at one time. The thickness of each part can be flexibly produced according to engineering needs, so the overall strength of the pipe is very high.
The carat tube has a tapered inner diameter at the socket and a tapered outer diameter at the socket. This structure can ensure that the two pipes will be firmly welded when using electrofusion connection.
Together without any gaps.
The thickness of the water contact layer of the carat tube can be from 2mm to 300mm, so the carat tube can be used as a sewage drainage or water supply pipe. Taking into account the reliability and construction of the pipe,
It is recommended that the wall thickness of the horizontal layer be at least 4mm. The load-bearing layer of the carat tube can adopt various pipe wall structures to enhance the ring stiffness according to the engineering requirements. These pipe wall structures are increasing the ring stiffness
While reducing the weight of the pipe, saving material. The pipe ring can be from 2KN / M2 to 32KN / M2.
Pipe wall structure nomenclature
The inner wall of this structure is smooth, the outer wall is corrugated, the ring stiffness is high, and the weight is low. This structure is mainly used to produce drainage and sewage pipes. PP of this structure
Support tube specifications are 21, 25, 30, 34, 42, 54, 65, 75, 80, 90, 110mm
1. Good hydraulic conditions:
Due to the smooth inner wall surface of the HDPE pipe, the roughness coefficient of the pipe is n.
That is, when transporting the same amount of sewage, HDPE pipe is selected, and its pipe diameter can be reduced by 1-2 pipe grades compared with the use of reinforced concrete pipe.
2. Good flexibility:
HDPE pipe is a flexible pipe with good elongation performance, so it can better adapt to construction and foundation settlement under poor foundation conditions, especially in coastal areas, where the foundation is poor and the settlement is serious
This kind of pipe can greatly adapt to uneven settlement.
3. Good tightness, can achieve zero leakage:
The electric connection welding technology can be used for the pipeline connection, so that the two ends of the interface are completely fused into one body, ensuring that the interface will not leak.
4. Light weight and easy installation:
Reduced labor intensity and shortened construction period.
5. A wide range of pipe diameters are produced:
HDPE pipes can currently produce pipe diameters ranging from DN300 to DN4000, which is significantly larger than the range of pipe diameters produced by PVC pipes (the diameter of PVC pipes is DN600)
6. High strength and long service life:
HDPE pipe is a pipe made of 100% high-density polyethylene in a hot melt state. It has good integrity, stable chemical properties, high strength, and long service life.
Up to 50 years.
7. Good corrosion resistance and aging resistance:
As the raw material of HDPE pipe is composed of polyethylene with high polymer content, it can effectively resist the corrosion of media such as acid, alkali, salt and untreated industrial wastewater and life.
The erosion of sewage, meanwhile, its aging performance is better than that of PVC pipes.
8. Wear resistance:
Mortar abrasion tests have proven that the life of high-density polyethylene (PE) pipes is more than 4 times that of steel pipes.
The structural wall winding pipe is suitable for various application projects because of its flexible tube wall structure.
1. Sewage drainage system: various pipe wall structures and pipes of hot structure wall winding pipes, inspection wells, and pipe fittings can be used for advanced shallow drainage systems due to their reliable connection performance
2. Drainage system: used to discharge liquid and gaseous substances into rivers or the sea. Thermal structure wall winding pipe has light weight, safety, reliable connection, corrosion resistance and
Ring rigidity and other advantages, so the use of thermal structure winding pipe has great advantages.
3. Storage tanks and containers: Pipes made of polyethylene or polypropylene can be used to produce vertical or horizontal storage tanks, and have the following advantages.
Ø Suitable for food storage
Ø Acid and alkali resistance
Ø High strength
Ø 100% reliable
Ø System integrity
Ø Double flat wall without leakage
4. Pipeline Renovation: It is more and more important to use the method of "lining in the pipe" to rebuild broken pipes.
5. Special applications: Hot-wound wall-wound pipes can also be used for special purposes such as ventilation, passages, etc.
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