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PVC-UH: High-performance rigid polyvinyl chloride pipes. In 2016, the industry standard "High-performance rigid polyvinyl chloride pipes (PVC-UH) and connectors for water supply" was promulgated, and the new term PVC-UH was created.
PVC-UH: High-performance rigid polyvinyl chloride pipes, belonging to the PVC pipe series, have the characteristics of high strength and impact resistance. The requirements of this product standard fundamentally stipulate the production and inspection requirements of the product.
As the country vigorously develops underground pipe corridors and pipe networks, pipes as the main component of the pipe network have once again attracted people's attention. The underground pipe network is a conscientious project. How to avoid bursting and leakage, and how to avoid a minor repair every three years and a major repair every five years have become the primary considerations. The high cost of repeated repairs of the existing underground pipe network has also become a major problem that plagues the water department. The 13th Five-Year Plan puts forward energy conservation, emission reduction and green environmental protection as the key points. The high energy consumption of ductile iron and other pipes has been exposed to everyone's sight again. The difference between its lifespan and plastic pipes has also made people start to reconsider PVC pipes, and PVC-UH came into being.
Specifications: caliber range dn20mm-1600mm, pressure level PN0.63MPa-2.5MPa Pipes are distinguished by color. Generally, the color of the pipe is blue, which can also be negotiated according to customer needs.
Standard documents: High-strength polyvinyl chloride (PVC-UH) pipes meet the industry standard CJ/493-2016 "High-performance rigid polyvinyl chloride pipes and connectors for water supply". The product performance is higher than the requirements of the national standard GB/T10002.1.
Application areas: municipal water supply pipelines, municipal pressure drainage, sewage pipelines, building water supply pipelines, and reclaimed water and chemical medium transportation pipelines.
Large-diameter (dn110-1600mm) PVC-UH pressure-resistant pipes can replace cast iron pipes and cement pipes for water supply systems, and have the advantages of good fluidity, corrosion resistance, and light weight;
Small-diameter PVC-UH pipes can be widely used in building tap water pipes, and have the advantages of low cost, corrosion resistance, and no need for frequent maintenance and replacement.
Good hygienic performance: PVC-UH pipes for water supply use a unique green and environmentally friendly lead-free formula system instead of the traditional composite lead salt formula system, so they will not damage the water quality and are hygienic and non-toxic.
High strength: PVC-UH pipes for water supply have good water pressure resistance, impact resistance, and tensile strength.
Good corrosion resistance: The PVC-UH pipe formula contains only a small amount of inorganic materials, which is equivalent to pure plastic components, so it has extremely strong corrosion resistance and can withstand strong acids and alkalis.
Reliable connection, no leakage: using a unique one-piece steel skeleton sealing ring or all-plastic connector for connection, good sealing.
Reliable quality: advanced production technology and strict testing, each pipe has completed the whole pipe water pressure performance test to ensure that the qualified rate of factory products is 100%.
Large diameter specifications: compared with PVC-U, 800-1600mm is added as an option.
PVC-UH pipes use different connection accessories from traditional PVC-U, such as: one-piece steel skeleton sealing ring socket structure and the development and application of all-plastic connectors.
One-piece steel skeleton sealing ring socket structure: This is a sealing ring connection form widely used in the United States. Its characteristic is that the rubber ring and the flaring are molded as one. It will not be squeezed and displaced during installation, which enhances the sealing of the connection and ensures the installation quality.
All-plastic connectors: Large-diameter PVC-UH pipes can be connected with all-plastic connectors, which adopt all-plastic composite reinforced socket-and-spigot structure. This product has high technical quality. It is the first time in the world that all-plastic connectors are applied to large-diameter PVC pipe systems. The use of all-plastic composite materials effectively solves the problem of corrosion and leakage caused by the use of steel-plastic pipe fittings (or ink cast iron pipe fittings) for large-diameter PVC pipes. The pipe fittings have good sealing, high strength, good toughness, and high pressure bearing capacity. Their service life is synchronized with the pipes, ensuring the service life of the entire pipeline system for more than 50 years.
The urban underground comprehensive pipe gallery is an important symbol of the modernization of new urban municipal infrastructure in the 21st century. The design life of the underground pipe gallery is 100 years. On the premise that the construction project meets the requirements, the life of the pipeline is undoubtedly the most important condition for determining the life of the pipe gallery.
How to consider the design service life of the pipeline in the comprehensive pipe gallery and how to take measures to ensure it? The maintenance of the pipeline in the comprehensive pipe gallery after laying is also troublesome. How to ensure a longer service life is a problem that needs to be considered. Most of the existing underground pipe galleries are made of steel pipes, and their lifespan of 20-30 years cannot meet the design requirements of the pipe galleries. A comprehensive replacement after the lifespan is reached will undoubtedly be a major project. Given the current situation where it is difficult to see a return on investment in the pipe galleries, such a large-scale increase in costs is something that investors are unwilling to see. Therefore, the use of higher-quality plastic pipes with a design lifespan of 100 years is the main pipeline material that should be considered for underground pipe galleries. The industry standard CJ/T493-2016 "High-Performance Rigid Polyvinyl Chloride Pipes and Connectors for Water Supply" issued by the Ministry of Housing and Urban-Rural Development clearly states that PVC-UH pipes are suitable for laying pipe galleries.
Quan'en Pipe Industry's unique patented pipe clamp technology is suitable for fixing PVC-UH pipes in pipe galleries, and the unique connection method of the pipes can achieve no leakage in the pipes without welding or welding, and the entire pipeline has the same lifespan as the pipe galleries.
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