Hubei carat pipe, sponge city drainage pipe spot

Carat pipe, also known as high-density polyethylene winding structural wall B-shaped pipe, is a new type of pipe widely used in the current drainage engineering field. The carat pipe supplied in stock in Hubei this time is all produced in accordance with the relevant technical requirements of sponge city construction drainage pipes. It uses high-quality high-density polyethylene as raw material and is processed through thermal winding molding process. The inner wall of the pipe is a smooth solid wall layer, and the outer wall is a spiral-shaped reinforced rib structure. The corresponding ring stiffness grade can be selected according to the burial depth and load-bearing requirements of different projects. At present, the spot covers DN300mm to DN3000mm full-diameter specifications. The ring stiffness includes SN4, SN8, SN12.5, and SN16 four commonly used grades. All are stored in the local standardized storage site in Hubei. The inventory is sufficient to meet the procurement needs of projects of different scales.

The core selling points of the carat tube supplied this time mainly include four points:

First, the structural performance is stable, and the drainage efficiency is suitable for the construction requirements of sponge cities. The spiral reinforced rib structure of the carat pipe makes it have a strong resistance to external pressure. Under the same ring stiffness requirements, it has a lower utilization rate of consumables than similar plastic pipes, and has stronger performance stability. It can adapt to the construction requirements of different burial depths. It has strong foundation settlement resistance and can adapt to the construction environment of soft soil foundations in some areas of Hubei. The inner wall of the pipe is smooth, and the Manning roughness coefficient is only 0.009. Under the same pipe diameter and slope conditions, the drainage flow is about 30% higher than that of traditional concrete pipes. The inner wall is not easy to scale and adhere to sundries. The drainage capacity will not be significantly attenuated during long-term use, which can fully meet the functional requirements of rapid transmission of rainwater and regulation and storage of discharge in the construction of sponge cities.

Second, the connection has good sealing performance and low risk of leakage. The carat pipe adopts electric hot-melt connection or hot-melt socket connection two interface methods. The seam is hot-melt fusion of the same polyethylene material, and an integrated overall structure is formed after connection. The tensile strength and anti-leakage performance of the seam are better than that of the pipe body. There will be no joint cracking and leakage problems due to temperature changes and uneven settlement of the foundation. The leakage rate is much lower than that of traditional drainage pipes, which can effectively avoid pollution caused by sewage and rainwater leakage to surrounding soil and groundwater, and meets the environmental protection requirements of municipal drainage projects.

Third, local spot reserves, high distribution response efficiency. The carat tubes supplied this time are all stocked at local storage points in Hubei, and all specifications and grades of products are fully stocked. After the regular purchase order is confirmed, the loading and distribution can be completed within 48 hours. Most areas in Hubei Province can be delivered within 3 days after placing the order. For the special needs of rush projects and emergency reconstruction projects, priority can be coordinated to allocate the supply of goods, eliminating the long-distance transportation cost and waiting period of cross-regional transfer, which can effectively cooperate with the construction schedule of the project.

Fourth, excellent corrosion resistance and low cost throughout the cycle. The main material of the carat pipe is high-density polyethylene, which has strong acid and alkali corrosion resistance and chemical corrosion resistance. It is not affected by the acid and alkali components in the soil, domestic sewage, and conventional industrial wastewater. Under normal buried use conditions, the service life can reach more than 50 years. There is no need for frequent anti-corrosion treatment during operation and maintenance, and there is no need to replace the pipe regularly. The inner wall is not easy to silt, and the cleaning maintenance cost is low. The overall life cycle use cost is much lower than that of traditional cement pipes and cast iron pipes, providing high cost performance.

From the perspective of applicable scenarios, this carat pipe can cover six categories of engineering needs: first, the rainwater collection pipe network, rainwater regulation and storage pipe network, and discharge pipe network system for sponge city construction projects; second, the rainwater diversion renovation project of municipal public works, the laying of urban sewage pipe network, the construction of urban drainage corridor, and the replacement of old pipe network; third, the construction of outdoor drainage pipe network and rainwater reuse pipe network for residential projects and commercial complex projects; fourth, the construction of drainage and flood discharge pipe network for urban parks, public green spaces, and waterfront landscape projects; fifth, the construction of farmland irrigation and water transmission for water conservancy projects, and the construction of flood control and drainage pipe network for small and medium-sized watersheds; sixth, the construction of wastewater discharge and rainwater sewage pipe network in industrial plants. In terms of adapting to the crowd, it is mainly for all kinds of municipal engineering contractors in Hubei Province, code packets of the sponge city construction project released version and contractors, real estate development enterprises, landscape engineering construction units, water conservancy engineering construction units, urban pipe network transformation project operators, etc. All the relevant subjects with compliance requirements for drainage pipeline performance and spot procurement needs can be selected according to the actual situation of the project.

This Hubei spot supply of sponge city carat pipes meets the relevant requirements of GB/T 19472.2-2017 "Buried Polyethylene (PE) Structural Wall Piping System, Part 2: Polyethylene Winding Structural Wall Pipe". Each batch of products has undergone strict quality inspection before leaving the factory, and can provide the purchaser with the corresponding batch of formal quality inspection reports to meet the qualification review requirements of various municipal engineering and public projects. The whole process of product production, transportation and installation complies with relevant national environmental protection and safety regulations. The purchaser can choose with confidence.