PVC pipe (polyvinyl chloride pipe) is a pipe material made of polyvinyl chloride through heating, extrusion, and other processes. It is widely used in construction, drainage, water supply, chemical industry and other fields. Due to its excellent performance, such as strong corrosion resistance, good pressure resistance, easy installation and low cost, PVC pipe has become an indispensable infrastructure material in modern engineering construction. According to different production processes, uses and performance requirements, PVC pipes can be divided into many types. This article will introduce the common types of PVC pipes and their applications in detail.
Types of pvc pipe standard
The classification standard of PVC pipe is relatively complex, mainly divided according to the following dimensions:
According to the hardness of the pipe:
Hard PVC pipe (UPVC pipe)
Soft PVC pipe (SPVC pipe)
According to the purpose of the pipe:
Water supply pipe
Drainage pipe
Electricity pipe
According to the connection method:
Socket-type PVC pipe
Adhesive PVC pipe
According to the performance of the pipe:
Ordinary PVC pipe
High pressure PVC pipe
Classification by pipe hardness
1. Rigid PVC pipe (UPVC pipe)
Rigid PVC pipe, also known as UPVC (Unplasticized Polyvinyl Chloride) pipe, is the most common type of PVC pipe. It does not contain plasticizers, has high hardness, good rigidity and strength, and is widely used in water supply, drainage, and sewage pipe systems in construction and municipal engineering. Rigid PVC pipes have a smooth surface, the inner wall is not easy to scale, and have good corrosion resistance, which can effectively resist the erosion of chemicals such as acids, alkalis, and salts.
Application: Rigid PVC pipes are suitable for water pipes, sewage pipes, rainwater pipes inside and outside buildings, and some industrial drainage pipes. Due to its high pressure resistance, corrosion resistance, and aging resistance, it is also the mainstream choice in many municipal projects.
2. Soft PVC pipe (SPVC pipe)
Compared with hard PVC pipes, soft PVC pipes are more flexible and suitable for occasions that require bending or deflection. Soft PVC pipes contain a certain proportion of plasticizers, which give them good softness and seismic resistance. This type of pipe is usually used in some small drainage systems, gas transmission pipelines, etc.
Application: Soft PVC pipes are mostly used in household drainage systems, air conditioning drainage pipes, agricultural irrigation systems, and some occasions that do not need to withstand high pressure.
Classification by pipe use
1. Water supply pipe
Water supply pipe is usually used to transport domestic water or industrial water. It requires good pressure resistance and corrosion resistance to ensure that the water quality is not polluted. The surface of PVC water supply pipe is smooth, which can effectively reduce the resistance of water flow and reduce the formation of scale. According to different working pressures, PVC Pipes for Water can be divided into different pressure levels (such as PN10, PN16, etc.).
Application: Suitable for urban water supply, building water supply system, industrial water pipeline, etc.
2. Drainage pipe
Drainage pipe is mainly used to transport domestic sewage, industrial wastewater, rainwater, etc. PVC Drainage Pipes have high corrosion resistance and anti-clogging ability, suitable for discharging sewage and wastewater. Because the inner wall of PVC pipe is smooth, the resistance of water flow is small, which can effectively reduce the adhesion of dirt.
Application: PVC drainage pipe is widely used in sewage and rainwater drainage systems inside and outside buildings and urban drainage systems.
3. Power pipe
Power pipe is usually used for cable protection and wrapping. PVC electrical conduit has good electrical insulation, waterproofness and corrosion resistance, and can effectively protect cables from damage by the external environment. The inner surface of the power conduit is smooth, which avoids the wear of the cable and prolongs the service life of the power facilities.
Application: Widely used in the protection of underground power pipes, power cables, and communication lines, etc.
Classification by pipe connection method
1. Socket-and-spigot PVC pipe
Socket-and-spigot PVC pipe is a PVC pipe with a simple connection method and easy installation. Its pipe end is specially designed to be connected to other pipes by socket-and-spigot method. Socket-and-spigot connection does not require external tools, and the pipe connection can be completed by manual force, and the joint part has good sealing to prevent water leakage.
Application: Commonly used in municipal drainage, building drainage, water supply pipes, etc. Due to its easy installation, socket-and-spigot PVC pipes are widely used in places that require fast construction.
2. Bonding PVC pipe
The bonding PVC pipe connection method is mainly to bond the two ends of the pipe together through special glue for pipes. The advantage of bonding connection is strong sealing, which can effectively prevent leakage problems at the pipe connection, but it requires certain skills and time during installation.
Application: Commonly used in the installation of household or industrial pipes, especially for long-distance, linear pipe systems.
Classification by pipe performance
1. Ordinary PVC pipe
Ordinary PVC pipe is mainly used for general water supply and drainage systems, and does not require special high pressure resistance or use in special environments. It is suitable for general domestic sewage, rainwater discharge and other environments.
2. High pressure PVC pipe
High pressure PVC pipe is designed to adapt to occasions that need to withstand large external forces (such as buried pipes). It has high compressive strength and can withstand ground pressure or external pressure during construction. Such pipes usually have thicker wall thickness and stronger toughness.
3. Anti-ultraviolet PVC pipe
Anti-ultraviolet PVC pipe is specially added with anti-ultraviolet stabilizer, so that it is not easy to age when exposed to sunlight. It is suitable for outdoor environments or places with direct sunlight, such as open-air pipes, roof drainage, etc.
PVC pipes have been widely used in all walks of life due to their excellent comprehensive performance. According to different usage requirements, there are many types of PVC pipes, including hard PVC pipes, soft PVC pipes, water supply pipes, drainage pipes, power pipes, etc., and each pipe has its own unique application scenario. Understanding the characteristics and application areas of different types of PVC pipes can help us make more reasonable decisions when choosing pipes, thereby improving the quality and safety of the project.
