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MDPE Pipes
At BES, we like making finding the right MDPE pipe to do the job as easy as possible. We stock a comprehensive range of MDPE and polyethylene pipework, including blue mains water pipe, yellow gas pipe, HPPE water pipe and specialist barrier pipe systems.
Get a great deal on MDPE pipes in a choice of sizes, lengths, and materials when you shop with us. With fast shipping and free returns, shop now for top-quality MDPE pipes.
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A Great Range Of MDPE Pipes From Top Brands
Whether you are installing a new mains water supply, upgrading an existing service, or running gas pipework, our selection of MDPE pipe won’t let you down.
HPPE Pipes
Our high-performance polyethene (HPPE) pipe range is suitable for carrying potable water both above and below ground. Our range includes black mains water pipe in common diameters such as 20mm, 25mm, 32mm, 50mm and 63mm, supplied in practical coil lengths of 25m and 50m. These pipes are commonly used where durability, flexibility and resistance to environmental stress are required.
Barrier Pipes
Barrier pipes are used in situations where the ground may be contaminated, helping prevent external substances from permeating into the water supply. We stock trusted systems such as Puriton® and Polyguard, available in multiple sizes and lengths, including 6m, 25m and 50m. Barrier pipe systems are typically used on brownfield sites or where additional protection is required for potable water installations.
MDPE Water Pipes
Standard MDPE water pipes are widely used for underground mains water supply. Our range includes blue MDPE pipe and Greenstripe variants in sizes of 20mm, 25mm, 32mm, 50mm and 63mm, with coil lengths up to 100m. These pipes are designed for potable water applications and are widely used in domestic service connections, agricultural installations and commercial supply runs.
Gas Pipes
Yellow MDPE gas pipes are designed for underground natural gas and LPG supply. Available in sizes such as 25mm, 32mm and 63mm, and in lengths of 50m and 100m, these pipes are suitable for external gas service runs when installed in accordance with regulations.
Gas pipework must always be installed and commissioned by a Gas Safe registered engineer.
INSUduct Pipe Boxes
INSUduct pipe boxes, including the MDPE pipe hockey stick available in the range, are used to protect pipework as it enters a building. They provide a secure and compliant transition from underground pipe to internal connection points, helping protect against damage and environmental exposure.
Groundbreaker Pipes
Groundbreaker™ Option 1 and Option 2 pipes are designed for use with specific underground entry systems, providing a structured solution for installing service pipes into buildings.
What Are MDPE Pipes Used For?
MDPE pipes are primarily used for underground distribution of potable water and gas. Their flexibility makes them suitable for long runs with fewer joints, while their resistance to corrosion makes them ideal for buried applications. They are commonly used for mains water connections, agricultural water systems, commercial supply lines and external gas installations.
Blue vs Yellow MDPE Pipe
Pipe colour is used to clearly identify the intended application. Blue MDPE pipe is used for potable water supply and is designed to carry drinking water safely. Yellow MDPE pipe is used for gas supply, including natural gas and LPG, and must only be used in gas installations. Black or black/green pipes may also be used for water applications, depending on the system and specification, but installers should always confirm suitability before use.
PE80, HPPE and Pressure Ratings Explained
PE80 refers to the material grade of polyethylene used in many MDPE pipes. It offers a balance of strength and flexibility suitable for water and gas distribution systems. HPPE pipes are designed to provide enhanced performance characteristics, particularly for potable water use. MDPE pipes are typically pressure-rated, with common ratings such as PN12.5, depending on the pipe specification and wall thickness. Always check the individual product details to ensure the pipe meets the required pressure and system demands.
How To Choose The Right MDPE Pipe
Selecting the correct pipe depends on the application, pipe diameter and installation environment. For potable water supply, blue MDPE or HPPE pipe is typically used. On contaminated ground, a barrier pipe system should be specified. For gas installations, yellow MDPE pipe must be used and must be correctly matched to the system requirements. Pipe diameter should be selected based on flow rate, distance and system demand. Common domestic supply sizes include 20mm, 25mm and 32mm, while larger diameters such as 50mm and 63mm are used for higher-demand or commercial applications.
Installation Guidance For Underground MDPE Pipes
MDPE pipes are typically installed below ground in a prepared trench. The trench should be free from sharp objects, and suitable bedding material should be used to support the pipe and prevent damage. Pipes should be laid at an appropriate depth to protect against freezing and external loads and backfilled carefully to avoid distortion. Compression fittings are commonly used to connect MDPE pipework, allowing secure, watertight joints without specialist equipment.
All installations should follow relevant regulations and manufacturer guidance.
Why Use MDPE Pipes?
Unlike other pipes, MDPE pipes can cope with water pressure changes and withstand any shock. MDPE, in general, is a robust, flexible, heavy-duty material. MDPE pipes are known for their durability and strength and for being able to carry not just water but other chemical liquids too.
Our range of MDPE pipes offers lightweight, durable options, as well as flexible, corrosion-resistant, internally abrasion-resistant, and stress-cracking-resistant pipes, with MDPE coils pressure-rated to 12.5 bar. WRAS-approved. Complies with water standards.
The Right Pipes And Tubes For Any Job
At BES, we are proud to say we have every pipe, tube and fitting you could need. Browse our entire range of pipes & tubes here. And if you’re looking for pipe fittings, you can see our range here. It includes some fantastic deals on clips & brackets, trunking & covers, pipe insulation and pipe tools.
Get Your BES Order Delivered On Time
With most of our products available for next working day delivery, you can count on BES to deliver the MDPE pipe you need quickly. If you’re ordering from Northern Ireland or the Scottish Highlands, you’ll want to refer to this table for average delivery times.
Get in touch with BES by calling us on 0800801090. The team will be happy to help you source what you need or answer any questions you may have.
Frequently Asked Questions
What is the difference between blue and yellow MDPE pipe?
Blue MDPE pipe is used for potable water supply, while yellow MDPE pipe is used for gas installations. Colour coding helps ensure the correct pipe is used for each application.
What sizes are available for MDPE pipes?
Common sizes include 20mm, 25mm, 32mm, 50mm and 63mm, with coil lengths ranging from 25m to 100m, depending on the product.
What does PE80 mean in MDPE piping?
PE80 denotes the polyethylene grade used in the pipe, indicating its strength and performance characteristics for pressure systems.
Are MDPE pipes suitable for drinking water?
Yes, blue MDPE and suitable HPPE pipes are designed for potable water applications when correctly installed.
How do you connect underground MDPE pipes?
MDPE pipes are typically connected using compression fittings, which create a secure seal without the need for heat or specialist tools.
What is the best MDPE pipe for natural gas?
Yellow MDPE gas pipe is specifically designed for natural gas and LPG installations. It must be installed in accordance with regulations by a Gas Safe registered engineer.
Do you sell fittings for MDPE pipes?
Yes, BES stocks a range of compatible compression fittings and accessories for MDPE pipe installations.