High ring stiffness bellows, suitable for complex geological drainage projects in Xiaogan

The high ring stiffness corrugated pipe is a special pipe for buried drainage produced by extrusion molding process with polymer composite raw materials. The product ring stiffness index meets the relevant standards of the current national buried drainage pipe. Aiming at the complex geological and hydrological characteristics such as staggered hilly plains in Xiaogan area, large soft soil layer thickness in some road sections, obvious seasonal fluctuations in groundwater level, and weak acidity in local soils, this type of pipe specifically optimizes the structural strength and environmental tolerance, and can be adapted to the construction requirements of various local drainage projects.

The core advantages of this product mainly include four points: first, excellent anti-deformation and anti-settlement performance, the ring stiffness of the product covers more than SN8 to SN16 commonly used grades, can withstand the static load of soil and ground vehicles under different buried depth conditions, and can adapt to the special working conditions such as uneven settlement of soft soil foundation in some areas of Xiaogan and shallow soil frost heave in winter. It is not easy to cause pipe deformation, cracking, leakage and other problems during use to ensure the stability of drainage system operation. The second is low leakage and high corrosion resistance. The main body of the pipe is produced by an integrated molding process, and the interface is connected by standardized elastic seals. The overall leakage rate is far lower than the limit required by the national drainage engineering construction. It can withstand weak acidic soil erosion, domestic sewage and conventional industrial wastewater corrosion, and is suitable for the construction requirements of high groundwater level areas in Xiaogan. It avoids drainage leakage from polluting surrounding soil and groundwater, and can also prevent groundwater from infiltrating into the pipe network to increase drainage load. The third is the controllable cost of the whole cycle. Under the same specification, the weight of the pipe is only 1/8 of that of the cement pipe and 1/10 of that of the cast iron pipe. No large-scale heavy equipment is required for transportation and hoisting. It can also be quickly completed at the construction site in complex terrain such as hills and villages in Xiaogan. The overall construction period can be shortened by about 30% compared with traditional pipes. The normal service life of the product can reach more than 50 years. The daily operation and maintenance only requires conventional dredging without frequent replacement and maintenance, which can effectively reduce the investment cost of the whole cycle of the project. The fourth is the stable flow and anti-silt performance. The inner wall of the pipe is smooth, the Manning coefficient is 0.009, and the flow capacity is 30% higher than that of the traditional cement drain pipe under the same diameter conditions. The inner wall is not easy to adhere to sediment, which can adapt to the short-term rainfall of Xiaogan in the rainy season and reduce the risk of waterlogging caused by pipe network blockage.

The pipe can be widely used in the construction of municipal main and secondary arterial drainage pipe networks in Xiaogan area, the transformation of rain and sewage diversion in old urban areas, the laying of wastewater discharge pipe networks in industrial parks, the transformation of farmland water conservancy and drainage channels, and the construction of supporting water storage and drainage systems in sponge cities. Suitable groups include local municipal engineering construction units in Xiaogan, real estate development enterprises, industrial park operation managers, main bodies of water conservancy engineering construction, and general contractors of various municipal public engineering construction units.

All performance indicators of this product comply with the current relevant national standards such as "Buried Polyethylene (PE) Structural Wall Pipeline System". The product can provide a complete third-party authoritative test report when entering the market, meeting the bidding and completion acceptance requirements of Xiaogan local drainage projects. It can cooperate with the construction unit to complete various on-site performance re-testing work.