PVC pipe grades

January 17, 2025

PVC pipe (polyvinyl chloride pipe) is a kind of pipe commonly used in construction, industry, agriculture and other fields. It is widely used due to its excellent performance, long service life and low cost. PVC pipe needs to meet different performance requirements in different application scenarios. Therefore, there are many common PVC pipe grades on the market, suitable for different engineering needs. This article will introduce the classification, standards, performance characteristics and applications of PVC pipe grades.

 PVC pipes for fresh water

PVC pipe grades and classification

PVC pipe grades are mainly divided according to the quality of its materials, pressure resistance, corrosion resistance, impact resistance and other indicators. According to different standards and use environments, PVC pipes can be mainly divided into the following grades:

1. Classification according to pressure grade

The common grades of PVC pipes are usually classified according to the pressure they bear. Different grades are suitable for different water pressure requirements. Common grades are:

PVC-U Pipe (rigid polyvinyl chloride pipe): This PVC pipe is the most common pipe material with strong pressure resistance and is suitable for water supply, drainage pipelines and other projects. PVC-U pipes are usually divided into multiple grades according to their pressure resistance, such as:

PN6: withstands 6 bar pressure, suitable for general residential and commercial water pipes;

PN10: withstands 10 bar pressure, suitable for water supply pipes that require higher pressure bearing;

PN16: withstands 16 bar pressure, suitable for industrial water, sewage pipes, etc.

Depending on the pressure grade, the wall thickness and material of the pipe are also different to ensure safe use under the corresponding pressure.

2. Classification according to the use environment

PVC pipes can also be graded according to their use environment. For example, PVC-M pipe (modified polyvinyl chloride pipe) and PVC-O pipe (oriented polyvinyl chloride pipe) are improvements on ordinary PVC-U pipes, with stronger impact resistance and higher pressure resistance, and are often used in environments that require higher strength and corrosion resistance, such as industrial chemical delivery pipelines.

3. Classification by pipeline application

The grade of PVC pipes can also be classified according to different application areas. For example:

Water supply pipe: used for household and industrial water supply, requiring the pipe to be non-toxic, high pressure resistant and corrosion resistant;

Drainage pipe: used for sewage discharge, requiring the pipe to be corrosion resistant, wear resistant and aging resistant;

Cable protection pipe: used to protect cables from external damage, usually requiring good pressure resistance and impact resistance.

 PVC pipes for irrigation

Performance characteristics of PVC pipes

PVC pipes of different grades have different performance characteristics to meet different usage requirements. The following are several main performance characteristics of PVC pipes:

1. Corrosion resistance

PVC pipes have good chemical corrosion resistance and can resist the erosion of most acids, alkalis, salts and other chemical substances. This makes it widely used in industries such as petroleum, chemical industry, and sewage treatment.

2. Good mechanical properties

PVC pipes have high tensile strength and compressive strength and can withstand certain external pressure. In pressure pipes and load-bearing pipes, PVC pipes are widely used due to their excellent mechanical properties.

3. Long service life

PVC pipes usually have a long service life. Its materials are not easy to age, rot or be attacked by microorganisms, so in most projects, PVC pipes can be used for decades without replacement.

4. Fire resistance

PVC pipes themselves have certain fire resistance and can slow down the spread of fire when a fire occurs. This makes PVC pipes used in electrical wiring and fire protection systems.

5. Good electrical insulation

PVC pipes have good electrical insulation properties and are widely used in cable protection pipeline systems, especially in environments where wires need to be protected from external interference.

 PVC Drainage pipe

Standards and certifications for PVC pipes

The quality and performance of PVC pipes need to comply with relevant national and international standards. Common standards include:

1. GB/T 10002.1-2006: It is a Chinese national standard that specifies the size, wall thickness, and performance requirements of PVC-U pipes;

2. ISO 1452: It is an international standard that applies to PVC pipes for construction, water supply, and drainage piping systems;

3. ASTM D1785: It is applicable to the US market and specifies the manufacturing, testing, and application standards for PVC-U pipes.

When selecting PVC pipes, users should ensure that the purchased pipes meet the relevant quality requirements based on standards and certifications to avoid safety hazards in later use due to unqualified pipe quality.

 PVC ventilation pipe

Application fields

1. Construction field: mainly used for water supply, drainage system, and electrical line protection of buildings, etc.;

2. Agricultural field: used for farmland irrigation, drainage, etc.;

3. Industrial field: used for chemical transportation, sewage discharge, etc.;

4. Power field: used for cable protection pipe to prevent cables from being damaged by the external environment.

 

As an efficient, economical and durable pipe, PVC pipe is widely used in many industries and fields. It can be divided into multiple grades according to different pressure levels, use environments, application fields, etc. Choosing the right PVC pipe grades can ensure the safe, reliable and long-lasting use of the pipeline system. When purchasing PVC pipes, in addition to paying attention to their grades and standards, it is also necessary to consider the actual use environment to ensure the long-term stable operation of the pipeline system.

By understanding the different grades and performance characteristics of PVC pipes, users can choose the most suitable pipes according to actual needs to ensure the quality of the project and the use effect.


Hot Products