About 40MM HDPE WATER PIPE SDR-21

40MM HDPE PIPE SDR-21 DESCRIPTION

The 40MM HDPE Pipe SDR-21 is a high-quality, lightweight, and durable piping solution manufactured from High-Density Polyethylene (HDPE). Designed with a Standard Dimension Ratio (SDR) of 21, this pipe offers an optimal balance between strength and flexibility, making it suitable for low to medium pressure applications.

These pipes are widely used in water supply systems, agricultural irrigation, cable protection, and industrial fluid transportation due to their excellent resistance to corrosion, chemicals, and environmental stress.

The smooth inner surface ensures minimal friction loss, enabling efficient fluid flow and reducing energy consumption. Additionally, HDPE pipes are UV stabilized, ensuring long service life even in outdoor conditions.

Key Features

• High strength with flexibility
• Corrosion and chemical resistant
• Lightweight and easy to install
• Long service life (50+ years)
• Smooth inner surface for better flow
• Leak-proof joints (butt fusion / electrofusion)
• UV stabilized for outdoor use

Technical Overview

• Size: 40MM (Outer Diameter)
• Material: HDPE (PE 63 / PE 80 / PE 100)
• SDR: 21
• Pressure Rating: Typically PN 6 (approx.)
• Application: Water supply, irrigation, cable ducting

Applications

• Agricultural irrigation systems
• Drinking water supply lines
• Underground cable protection
• Industrial fluid transport
• Rural and urban pipeline networks

FAQs 40MM HDPE PIPE SDR-21

Q1. What does SDR-21 mean?

SDR (Standard Dimension Ratio) is the ratio of pipe diameter to wall thickness. SDR-21 indicates a thinner wall compared to lower SDR pipes, suitable for lower pressure applications.

Q2. What is the pressure rating of 40MM SDR-21 pipe?

It is generally rated around PN 6, suitable for low-pressure water flow systems.

Q3. What are the common uses of this pipe?

It is commonly used for:

• Irrigation
• Water supply
• Cable ducting
• Drainage systems

Q4. Is HDPE pipe resistant to corrosion?

Yes, HDPE pipes are highly resistant to corrosion, chemicals, and rust, making them ideal for long-term use.

Q5. Can this pipe be used for drinking water?

Yes, if manufactured with food-grade material and certified, it is safe for potable water supply.

Q6. What is the life span of this pipe?

HDPE pipes typically have a lifespan of 50 years or more under normal operating conditions.

Q7. What type of joints are used?

• Butt fusion
• Electrofusion
• Compression fittings

Q8. Is it suitable for underground installation?

Yes, it is ideal for underground use due to its flexibility and durability.

Q9. Does it require maintenance?

No, HDPE pipes require minimal maintenance due to their non-corrosive nature.

Q10. What is the advantage of SDR-21 over other SDRs?

SDR-21 pipes are more economical and suitable for applications where high pressure is not required.