Pipe - PVC | Tunnel India

Definition:

PVC (Polyvinyl Chloride) pipes are a type of plastic pipes made from PVC resin. They are lightweight, durable, and resistant to corrosion, making them suitable for various applications in tunneling and underground structures. PVC pipes are commonly used for drainage, sewage systems, water supply, and utility conduits in underground construction projects.

Uses/benefits:

Drainage systems: PVC pipes are widely used for underground drainage systems in tunnels and underground structures. They effectively carry away stormwater, wastewater, and other liquids, preventing waterlogging and maintaining a stable environment.
Sewage systems: PVC pipes are employed for sewage conveyance in underground structures. They provide a reliable and durable solution for transporting sewage to treatment facilities, preventing leakage and contamination.
Water supply: PVC pipes can be used for water supply systems in tunnels and underground facilities. They are cost-effective, easy to install, and resistant to corrosion, ensuring a continuous and safe water supply.
Utility conduits: PVC pipes serve as conduits for various utilities, including electrical cables, telecommunication lines, and fiber optics. They provide a protective pathway for these utilities and facilitate their installation and maintenance.

Specifications:

Diameter: PVC pipes come in a range of diameters suitable for different applications, from small-diameter pipes for drainage to larger-diameter pipes for water supply and utility conduits.
Wall thickness: The wall thickness of PVC pipes can vary based on the required strength and pressure rating. Thicker walls provide higher strength and durability.
Pressure rating: PVC pipes are available in different pressure ratings to accommodate various applications. The pressure rating indicates the maximum pressure the pipe can withstand without failure.
Jointing methods: PVC pipes can be joined using solvent cement or mechanical fittings. Solvent cement joints provide a strong and leak-proof connection, while mechanical fittings allow for easier disassembly and reassembly.

Types:

PVC-U (Unplasticized PVC) pipes: These are rigid PVC pipes commonly used for underground applications. They offer excellent strength, chemical resistance, and durability. PVC-U pipes are suitable for drainage, sewage, and water supply systems.
PVC-O (Oriented PVC) pipes: These pipes are manufactured using a molecular orientation process, resulting in increased strength and pressure-bearing capacity. PVC-O pipes are suitable for high-pressure water supply applications.
PVC-C (Chlorinated PVC) pipes: These pipes are treated with chlorine to enhance their resistance to higher temperatures and certain chemicals. PVC-C pipes are used in applications where elevated temperature resistance is required, such as hot water supply systems.

The selection of PVC pipes for tunneling and underground structures depends on factors such as the application, operating conditions, required pressure rating, and local regulations.