About 250MM HDPE WATER PIPE SDR-21

250MM HDPE PIPE SDR-21 DESCRIPTION

The 250MM HDPE Pipe SDR-21 is a heavy-duty, durable, and cost-effective piping solution manufactured from premium grade High-Density Polyethylene (HDPE). Designed with a Standard Dimension Ratio (SDR) of 21, this pipe is suitable for low to medium pressure applications, offering an excellent balance of strength, flexibility, and long service life.

This large-diameter pipe is widely used in municipal water supply systems, large-scale irrigation projects, and industrial fluid transportation. Its excellent resistance to corrosion, chemicals, and environmental stress cracking ensures reliable and long-term performance even in demanding environments.

The pipe features a smooth internal surface, which minimizes friction loss and enhances flow efficiency. Being UV stabilized, it is suitable for both underground and above-ground installations.

Key Features

• High strength with flexible structure
• Excellent resistance to corrosion and chemicals
• Lightweight compared to conventional piping materials
• Smooth inner surface for efficient fluid flow
• Leak-proof and reliable jointing systems
• UV stabilized for outdoor applications
• Long service life (50+ years)

Technical Specifications

• Size: 250MM (Outer Diameter)
• Material: HDPE (PE 63 / PE 80 / PE 100)
• SDR: 21
• Pressure Rating: PN 6 (approx.)
• Jointing Methods: Butt fusion / Electrofusion

Applications

• Municipal water supply systems
• Large-scale irrigation and agriculture projects
• Industrial fluid transportation
• Underground cable ducting
• Infrastructure and utility pipelines

FAQs 250MM HDPE PIPE SDR-21

Q1. What does SDR-21 indicate?

SDR-21 represents the ratio between the pipe diameter and wall thickness, making it suitable for low-pressure applications.

Q2. What is the pressure rating of 250MM SDR-21 pipe?

It is typically rated at PN 6, suitable for low to medium pressure systems.

Q3. Where is this pipe commonly used?

It is widely used in:

• Water supply systems
• Irrigation projects
• Industrial pipelines
• Cable ducting and drainage

Q4. Is this pipe suitable for underground installation?

Yes, it is highly suitable due to its flexibility and resistance to soil stress and external loads.

Q5. Is it safe for potable water supply?

Yes, when manufactured using approved materials, it is safe for drinking water applications.

Q6. What is the expected lifespan?

The pipe can last 50 years or more under normal operating conditions.

Q7. What jointing methods are used?

• Butt fusion
• Electrofusion

Q8. Does it corrode or rust?

No, HDPE pipes are completely resistant to corrosion, rust, and chemical reactions.

Q9. Why choose SDR-21 pipes?

They are economical and ideal for applications where high pressure resistance is not required, especially in large-diameter pipelines.

Q10. Does it require maintenance?

Minimal maintenance is required due to its durable and non-reactive nature.