PVCu Underground Drainage Pipe

At Pipestock, we supply the full range of Polypipe PVCu underground drainage pipe, designed for strength, durability, and compliance with the latest UK standards. Manufactured in the UK and finished in the traditional terracotta colour for easy identification, these pipes are the foundation of any reliable drainage system.

Polypipe underground drainage pipes are fully certified and independently Kitemarked to ensure performance and peace of mind:

• BS EN 1401-1 – Plastic piping systems for non-pressure underground drainage and sewerage.

• BS EN 13476 – Structured-wall piping systems.

• BS 4660:2000 – Specification for underground drainage and sewerage systems.

• Kitemark Licences KM 59284 & KM 06383 – independent third-party quality assurance.

These approvals mean the system is accepted by local authorities, water companies, and meets all UK Building Regulation requirements.

PVCu underground drainage pipes are available in three key diameters:

• 82mm (3") Pipe

  • Used primarily for smaller applications such as rainwater downpipe connections or short runs where full 110mm capacity isn’t needed.

  • Ideal for linking roof drainage into a main 110mm underground system.

• 110mm (4") Pipe

  • The standard choice for most domestic underground drainage systems.

  • Handles both foul water (toilets, kitchens, bathrooms) and surface water (driveways, patios, paved areas).

  • Required by UK Building Regulations for foul drainage in single dwellings.

• 160mm (6") Pipe

  • Larger capacity option designed for commercial projects, housing developments, or where multiple properties connect into one system.

  • Often used for longer runs or higher flow rates where 110mm would be undersized.

Pipes are supplied in a choice of plain-ended or single-socket designs, with lengths typically available in 3m and 6m. Perforated pipe options are also available for land drainage applications.

• Push-fit ring seal joints with chamfered ends for quick and secure connections.

• Lightweight and easy to handle compared to clay or concrete.

• Compatible with clay and cast iron systems via adaptors, making them ideal for new builds or refurbishments.

• Long service life thanks to impact resistance, chemical resistance, and durability.

Polypipe underground drainage pipe is designed to work seamlessly with the complete system of:

• [Underground Fittings] – bends, junctions, reducers, and couplers.

• [Bottle Gullies] – trapping debris and preventing odours.

• [Access Chambers & Covers] – for inspection and maintenance.

• [Tools & Accessories] – lubricants, cutters, and installation aids.

Together, these components form a fully approved, high-performance underground drainage solution.

• UK-manufactured with comprehensive British and European approvals.

• Available in all common sizes (82mm, 110mm, 160mm).

• Backed by Polypipe’s reputation for quality and innovation.

• Competitively priced with full technical support from Pipestock.