In what fields are PVC-U pipes mainly used? What special requirements do different scenarios have for pipe performance?

PVC-U pipes have been widely used in many industries and fields due to their excellent corrosion resistance, light weight, high strength, and easy installation. According to different usage scenarios, PVC-U pipes need to meet specific performance requirements to ensure that they can operate stably and for a long time in complex environments. The following is a detailed discussion of the main application areas of PVC-U pipes and their special performance requirements.

1. Municipal water supply and drainage field
In municipal water supply and drainage systems, PVC-U pipes are often used to transport drinking water, domestic sewage and rainwater discharge, and their application needs to meet the following performance requirements:

Sanitary performance: As a drinking water pipeline, PVC-U pipes must meet relevant sanitary standards, not release harmful substances, and ensure water quality safety.
Corrosion resistance: Sewage and rainwater may contain acidic, alkaline or corrosive chemicals. The excellent corrosion resistance of PVC-U pipes can prevent damage to the pipes.
Pressure resistance: The municipal pipe network needs to withstand a certain internal and external pressure, and PVC-U pipes need to have sufficient pressure resistance to prevent rupture or leakage.
2. Building drainage and ventilation systems
PVC-U pipes are widely used in drainage pipes and ventilation pipes inside buildings, and their performance requirements include:

Sound insulation performance: Indoor drainage pipes need to reduce water flow noise and improve the living environment. Some PVC-U pipes will increase sound insulation design.
Flame retardancy: The pipes used inside the building should have certain flame retardancy to reduce the risk of fire.
Durability: PVC-U pipes can resist aging and corrosion for a long time, and adapt to indoor humidity changes and chemical emissions.
3. Chemical liquid transportation in the industrial field
PVC-U pipes are often used in chemical plants, food processing plants and other scenes to transport various chemical liquids or industrial wastewater. Such scenes have more stringent performance requirements for pipes:

High chemical stability: PVC-U pipes need to have good tolerance to media such as acids, alkalis, and salts.
Temperature resistance range: Although PVC-U pipes are generally suitable for media below 60°C, some industrial scenes may require higher temperature resistance.
Connection reliability: Industrial applications have high requirements for the sealing of pipe connections, and suitable adhesive or flange connection methods need to be selected.
4. Agricultural irrigation and drainage systems
In agriculture, PVC-U pipes are often used to transport irrigation water and discharge excess water. Their performance requirements mainly include:

Weather resistance: In agricultural environments, PVC-U pipes need to be exposed to sunlight for a long time, so anti-ultraviolet stabilizers need to be added to prevent aging.

Lightness and ease of installation: Agricultural irrigation systems need to be frequently moved and adjusted in layout, and the lightweight design and easy installation characteristics of PVC-U pipes are very suitable.

Low friction loss: During irrigation, the water flow is large, and the PVC-U pipe with a smooth inner wall can reduce friction loss and improve water delivery efficiency.

5. Cable protection pipes in the field of power and communications
PVC-U pipes are widely used in power and communication projects as cable protection pipes to protect cables from mechanical damage and environmental influences:

Mechanical strength: The pipes must have sufficient pressure and impact resistance to prevent cable damage.

Insulation performance: PVC-U pipes have good electrical insulation to ensure safe operation of cables.
Moisture resistance: Power and communication lines are usually laid underground or in humid environments. The waterproof and corrosion-resistant properties of PVC-U pipes can effectively protect cables.
6. Mining and special engineering
In mining and special engineering, PVC-U pipes are used for drainage, ventilation and transportation of slurry. These scenarios have higher adaptability requirements for pipes:

Abrasion resistance: During the transportation of slurry, pipes need to withstand high wear, and PVC-U pipes need special designs to enhance wear resistance.
Compression resistance: The complex geological conditions in the mining area put higher requirements on the pressure-bearing capacity of pipes to ensure that they do not break in high-pressure environments.
Lightweight and easy to transport: Mining areas usually have complex terrain, and lightweight PVC-U pipes are easier to carry and lay.
7. Environmental protection and wastewater treatment
In environmental protection and wastewater treatment systems, PVC-U pipes are mainly used to transport sewage and treated recycled water. Their performance requirements include:

Corrosion resistance: Wastewater may contain high concentrations of chemical pollutants, and PVC-U pipes need to have excellent corrosion resistance.
Durability: Wastewater treatment systems are usually operated for a long time, and PVC-U pipes need to have good anti-aging and durability.
Easy to maintain: PVC-U pipes are easy to install and have low maintenance costs, making them suitable for large-scale use in environmental protection projects.