Pipe & Hoses

Choosing the Right Plumbing Pipes & Hoses

At County Building Supplies, we supply plumbing pipes, hoses and accessories for professional plumbers, heating engineers, builders and DIY customers. Whether you're installing new water pipework, replacing existing plumbing or completing a drainage project, choosing the correct pipe material, diameter and fittings is essential for a reliable installation.

Copper Pipe vs Plastic Plumbing Pipe

Copper and plastic pipes are widely used in domestic and commercial plumbing, but their suitability depends on the application.

• Copper tube: A durable, rigid option commonly used for hot and cold water supplies and suitable heating installations. County stocks copper tube in sizes including 15mm and 22mm, sold by the metre.
• Plastic push-fit pipe systems: Offer a lightweight alternative for compatible plumbing installations. Some systems provide flexibility and quicker assembly, although the correct fittings and installation method depend on the manufacturer.

Always check pressure and temperature ratings, water suitability and compatibility with the chosen fittings before installation.

MDPE Water Pipe for Underground Supplies

MDPE pipe is commonly used for underground cold water supply connections. County stocks blue MDPE water pipe in sizes including 20mm and 25mm, with selected 25m and 50m coils available.

Blue MDPE pipe is typically used for potable water supply applications where the product is appropriately approved. Installation depth, protection and connection methods must comply with relevant water regulations and local water supplier requirements.

Soil Pipe vs Waste Pipe

Soil and waste pipes perform different functions within a drainage system.

• Soil pipe: Typically used to carry wastewater from toilets and other sanitary appliances into the drainage system. A common domestic soil pipe size is 110mm.
• Waste pipe: Generally used to carry wastewater from sinks, basins, baths and showers. Common nominal sizes include 32mm and 40mm, depending on the application.

County supplies soil pipe, waste and overflow products, including selected Brett Martin components. Choose compatible pipework and fittings to ensure the system is correctly connected and supported.

Flexible Plumbing Hoses & Pipe Lagging

Flexible compression hoses are commonly used for suitable connections to taps and sanitary appliances. When choosing a hose, check the connection sizes, length, pressure rating and suitability for the intended water supply.

Pipe lagging helps reduce heat loss from suitable hot water and heating pipes and can provide some protection against freezing in colder areas. Select insulation with the correct internal diameter and thickness for the installation.

Choosing the Correct Pipe Size

Pipe size is an important consideration when replacing or installing plumbing. Common copper tube sizes include 15mm and 22mm, while MDPE, soil and waste pipes use different sizing conventions.

Always check whether dimensions refer to the outside diameter, nominal bore or another measurement. Matching the correct pipe and fitting specifications helps prevent installation problems and leaks.

Need Advice?

Not sure which plumbing pipe, hose or fittings you need? Visit your local County Building Supplies branch or contact our team for help choosing suitable materials, checking product compatibility and confirming availability.