
MDPE line is a versatile and reliable piping material, and understanding its technical specifications and uses is essential for any project. It has a pressure rating of up to 6 bar, making it suitable for a variety of applications.
MDPE line is resistant to corrosion and can withstand temperatures from -20°C to 40°C. This makes it an excellent choice for outdoor installations.
Its flexibility and ease of installation make it a popular choice among plumbers and DIY enthusiasts alike.
Technical Details
The MDPE line is a reliable choice for drinking water applications.
The pressure rating for MDPE pipes is 12.5 bar, while HDPE pipes have a lower rating of 10 bar.
Here are the key technical specifications for MDPE pipes at a glance:
- Pressure Rating (MDPE): 12.5 bar
- Pressure Rating (HDPE): 10 bar
- Standards: ISO 4427:2007, BS EN 15494:2003, BS 6572:1985, BS EN 12201, DWI (56/4/1120 & 56/4/1514)
- Approvals: WRAS, BSI Kitemark KM85017
- Suitable For: Drinking Water
Technical Specification
The technical specification of the pipe is a crucial aspect to consider. The pressure rating for MDPE is 12.5 bar, while for HDPE it's 10 bar.
The pipe meets several international standards, including ISO 4427:2007, BS EN 15494:2003, BS 6572:1985, and BS EN 12201. Additionally, it complies with DWI standards 56/4/1120 and 56/4/1514.

The pipe has received approvals from WRAS and BSI Kitemark KM85017, ensuring its quality and safety. It's suitable for use with drinking water.
Here's a quick rundown of the pipe's technical specifications:
Light Material Weight
The light material weight of PE4710/PE2708 pipe is a significant advantage. It's about 70% lighter than alternative metallic materials.
This weight difference makes a big impact on handling and transportation. It's much easier to load and position the pipe, which reduces installation costs.
The lighter weight also means it's safer to handle. You're less likely to strain yourself or risk accidents when moving the pipe around the job site.
Overall, the light material weight of PE4710/PE2708 pipe is a key benefit that can save you time and money.
Pipe Usage
MDPE lines are incredibly versatile and can be used in a variety of applications. MDPE pipes are lightweight, making them easy to transport and install, thereby reducing labour and transportation costs.

Their flexible nature enables them to bend and curve around obstacles, eliminating the need for extra joints or fittings. This flexibility also helps prevent damage or cracking during installation, as the pipes can withstand slight bending without breaking.
In water and wastewater plumbing, MDPE pipes offer numerous benefits, including non-porosity and resistance to bacterial growth. Non-porosity prevents water or other liquids from seeping through the walls of the pipes, minimizing contamination and leakage in the water supply.
MDPE pipes are also strong enough to handle high pressure without breaking or deforming, making them perfect for sewage and drainage systems. Furthermore, they have a smooth interior surface that reduces friction and turbulence, allowing sewage and wastewater to flow more efficiently through the pipes.
Here are some of the key uses of MDPE pipes:
- Gas pipelines
- Water and wastewater plumbing
- Sewage and drainage systems
- Agriculture
- Geothermal systems
In agriculture, MDPE pipes are a cost-effective option for farmers and agricultural businesses, as they are relatively inexpensive compared to other piping materials. They are highly durable and can withstand environmental factors such as temperature fluctuations, UV exposure, and impact.
Pipe Maintenance
Regular inspections are a must for MDPE pipes. Visually examine the pipes for signs of wear and tear, such as cracks, bulges, or leaks, to prevent additional harm.
Keeping the pipes clean is essential to prevent blockages and maintain their efficiency. This simple step can go a long way in ensuring the pipes function properly.
To avoid damaging the pipes, exercise caution while digging around them. Use the right equipment and methods to prevent harming the pipes.
Here's a quick rundown of the basic tips for maintaining MDPE pipes:
Regular inspectionsKeep the pipes cleanAvoid heavy loadsKeep the pipes protectedBe cautious while diggingAvoid harsh chemicalsRegular maintenance
Pipe Durability
Pipe durability is crucial for a reliable and long-lasting piping system. MDPE pipes are resistant to chemical exposure, but it's essential to choose the right type of pipe for the specific application.
Chemical exposure can weaken MDPE pipes, but Topline Industries offers high-quality pipes with exceptional chemical resistance. These pipes can withstand extreme surroundings, but it's still important to consider the chemicals involved and other factors that may affect performance.
UV exposure can cause MDPE pipes to become brittle and prone to damage. Using MDPE pipes with UV stabilizers or protecting them from sunlight can help prevent damage.
Pressure is another factor that can affect MDPE pipe durability. The maximum allowable pressure is determined by factors such as pipe size, wall thickness, and material used.
Proper installation techniques are also vital for ensuring the longevity and durability of MDPE pipes. Incorrect installation can lead to sagging, deformation, and damage, which can compromise the pipes' durability.
Here are some key factors to consider for ensuring MDPE pipe durability:
- Chemical exposure: Choose the right type of pipe for the application, and consider the chemicals involved.
- UV exposure: Use UV stabilizers or protect the pipes from sunlight.
- Pressure: Ensure the pipe is designed to withstand the intended pressure.
- Proper installation: Use the correct jointing technique, support the pipes properly, and select the right bedding and backfill materials.
Pipe Maintenance
Regular inspections are key to maintaining MDPE pipes. Visually examine the pipes for cracks, bulges, or leaks, and address any issues promptly to prevent further harm.
Keeping the pipes clean is crucial for their efficiency. This involves preventing blockages by regularly clearing any debris or buildup.
Heavy loads should be avoided on MDPE pipes, as they can cause harm or alteration. This includes not using them to support bulky machinery.
Protecting the pipes from external damage is essential. Install them in a safe and secure location to prevent damage from digging or other external factors.
If you need to dig around MDPE pipes, exercise caution to avoid harming them. Use the right equipment and methods to prevent damage.
Avoid exposing MDPE pipes to harsh chemicals, as they can cause corrosion or degradation. Only use authorized cleaning and maintenance materials to keep the pipes in good condition.
Regular maintenance checks and servicing of MDPE pipes are vital. Schedule these regularly to identify any issues before they become major problems.
Frequently Asked Questions
What is MDPE pipeline?
MDPE pipeline refers to a type of pipe made from Medium Density Polyethylene, used for transporting gas and water due to its excellent technical and operational characteristics. It has a specific density range of 0.926-0.940 g/cm³.
What is the difference between MDPE and HDPE pipe?
The main difference between MDPE and HDPE pipe lies in their physical properties and applications, with MDPE typically used for natural gas distribution and HDPE used for a broader range of pressure pipe applications. HDPE pipe is generally more versatile and widely used than MDPE pipe.
What are the disadvantages of MDPE pipe?
MDPE pipe can be more expensive and may not be suitable for high-pressure applications. It also requires specialized tools and training for installation.
Sources
- https://www.repurposedmaterialsinc.com/pex-and-pe-rt-tubing/1-2-cts-x-500-mdpe-gas-pipe/
- https://www.pipestock.com/mdpe-pipe-lengths-blue
- https://www.wlplastics.com/markets/natural-gas-distribution
- https://toplineindustries.in/a-detailed-guide-on-mdpe-pipes-their-uses/
- https://vippipes.com/products/properties/mdpe-pipes/
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