A Comprehensive Buyer's Guide to HDPE Pipes: Types, Grades & Uses

High Density Polyethylene (HDPE) pipes have become a very reliable option for water supply, agriculture, industrial systems and underground networks in India. They are flexible, very durable and do well in tough environments which is what sets them apart from many traditional materials. As you plan out a new project or are looking to upgrade an existing pipeline have a good grasp of what is out there in the HDPE Pipes India market their sizes, grades, and pricing. 
This guide puts together all you need to know before you buy into HDPE pipes in India also we include input from Skipper which is a very trusted name in the piping field.

What makes HDPE pipes different from traditional materials

Older pipe materials (PVC, CPVC, GI & metal) have problems with: Corrosion, Scaling, Cracking, and Damage from long term exposure to many different environments. HDPE pipes have been recognized as having superior flexibility, superior impact strength and superior chemical resistance over a wide variety of environmental applications.

The above features provide several advantages to users of HDPE pipes.

1. Superior Flexibility and Strength:
   HDPE pipe will flex and absorb shock loads but will not break, providing an advantage in applications where pipe installation is done in uneven terrain, agricultural field applications or underground routes that would cause rigidity of other types of pipes to be detrimental.
   
   
2. Non-Corrosive and Leak-Resistant:
   Metal pipes rust and PVC pipes will crack at extreme temperature conditions while HDPE water pipes maintain their shape. HDPE pipes do not corrode or scale and have no chemical reaction to make them unreliable for use in potable water, irrigation and industrial operations.
   
   
3. Suitable for High Pressure Applications:
   With HDPE pipe being available in various grades (i.e. PE 63, PE 80 and PE 100), users of HDPE pipe can select the appropriate grade of pipe based upon the required pressure rating of the application. This provides a broad range of applicability from residential plumbing to large irrigation systems and municipal pipeline networks.
   
   
4. Longer Service Life:
   Typical service life for HDPE water distribution pipes is between fifty (50) and one hundred (100) years depending on how well they are maintained; which provides a longer period before having to replace the piping system, thus lowering replacement costs and offering long term economic benefits.
   
   
5. Environmental & Safety Benefits:
   HDPE pipe does not contain any toxic materials that could possibly contaminate water supplies. In addition, HDPE pipe cannot leach chemicals into a water or gas line. This makes it ideal for potable water, irrigation /spray systems for farms, sanitary sewerage systems and all types of industrial pipeline applications.

Key Technical Specifications You Should Know 

The most important characteristics to consider when comparing HDPE pipes to determine whether they are suitable for an application are the technical characteristics listed as follows:

• Pressure Rating (PN Class)
  HDPE pipes have been made available in many different PN classes which includes PN4, PN6, PN8, PN10, PN12.5, PN16, and PN20.
  The PN class number of a pipe is indicative of the pressure a pipe can endure; therefore, if you require a pipe with the ability to resist greater pressure, it would be advisable to select a higher PN class.
  
  
• Material Grades (PE63, PE80, PE100)
  The grades of HDPE used for manufacturing HDPE pipes include:
  PE63 → Suitable for light duty applications
  PE80 → Suitable for medium pressure use
  PE100 → Suitable for high pressure industrial/municipal work
  
  
• HDPE Pipe Wall Thickness (SDR Ratings)
  SDR stands for Standard Dimension Ratio and it represents the ratio of outside diameter of the pipe to the nominal thickness of the pipe wall.
  Lower SDR ratings indicate thicker walls and hence higher strength.
  
  
• HDPE Pipe Sizes
  Skipper manufactures HDPE pipes with diameters ranging from 20mm to 1000mm to meet all types of requirements, whether they are domestic plumbing or large-scale infrastructure applications.
  
  
• Temperature & Chemical Resistant
  HDPE pipes remain strong under varying temperatures, making them applicable for either rural or urban installations.

Each Skipper pipe has been made according to the rigid standards set by ISI and the world at large to ensure consistent operation.

Choosing the correct pipe size and material for an HDPE (High Density Polyethylene)

Piping project is a very individualized process and there isn't one single choice. Here are some general guidelines to assist you in choosing the best HDPE piping for your project needs:

• For residential plumbing, choose pipes with diameters in the range of 20mm – 63mm and PE80 or PE100 as it relates to how much pressure will be put on the piping system.
• For farmers who require piping materials for irrigation which are capable of handling extreme pump pressures, choose pipes in the 63mm – 110mm diameter and PE80 or PE100.
• For large municipal water distribution systems using large diameter piping (typically 110mm – 400mm), PE100 is often used.
• For industrial and chemical transport applications, utilize high SDR, thicker PE100 HDPE piping for maximum chemical resistance and carrying capacity.

If you're unsure about what type of piping would work best for your application, contact Skipper's technical specialists or one of our authorized HDPE pipe distributors and we'll assist you in selecting the best piping product for your needs based upon pressure, loading, and operating conditions.

Price Range for Average HDPE Piping Materials and Where to Purchase Them

The price of HDPE piping varies widely according to the size of the pipe, type of piping (i.e., grade of HDPE), standard dimension ratio (SDR) of the pipe and whether it is a potable water, sewage treatment, irrigation, etc. application.

Price Range for HDPE Piping Material Costs:

• 20mm to 63mm: ₹25 to ₹120 per meter
• 75mm to 160mm: ₹150 to ₹600 per meter
• 200 mm & greater: Prices for these pipes can be as low as thousands of rupees/meter and as high as tens of thousands of rupee/meter depending upon wall thickness.

It is advisable to buy HDPE pipes and fittings from good quality and reliable HDPE pipe manufacturers in India or their dealers to get a reasonable price and quality product.

Locations to Purchase Skipper HDPE Pipes

Skipper has a large number of distributors and dealers throughout India. To contact one near you, or locate a Skipper authorized retailer, you may either call the Skipper Customer Service Department or go to a Skipper authorized retail store for assistance with purchasing and additional information regarding Skipper products.

Skipper HDPE Pipe Maintenance/Warranty Checklist
The maintenance requirements for HDPE pipes are limited; however, correct installation is necessary for the long term operation of these systems.

Maintenance Requirements

• Verify that all connections were properly fused when installing the HDPE system.
• Protect the HDPE pipes from excessive heat due to direct sunlight unless they have been treated with UV stabilizers.
• The HDPE pipes should be buried at sufficient depths to prevent damage from excavation equipment.
• Use fittings that meet the same standards and SDR rating as the HDPE pipe being connected.

Skipper HDPE Pipe Warranty Information
Skipper offers warranty protection if the following requirements are met:

• Purchases were made through a Skipper authorized dealer.
• Installation was completed according to Skipper specifications.
• SC certified fittings and acceptable fusion procedures were used.
• Operating pressures and temperatures are within the specified ranges.

Reliable construction and good quality materials will contribute to a long service life.

FAQs

1. What are HDPE pipes and why are they used in India?
   HDPE pipes are flexible, durable plastic pipes that are used in irrigation, water supply, sewage and industry. The reason HDPE pipes are so common is because of there ability to last a long time and be leak resistant.
2. How are HDPE pipes different from traditional PVC or CPVC pipes?
   HDPE pipes have many advantages over PVC and CPVC pipes; such as the ability to withstand corrosive materials, are more flexible than PVC and CPVC and will hold pressure better. As a result HDPE pipes are often used in both underground and above ground applications.
3. Are HDPE pipes eco-friendly and safe for drinking water?
   Yes HDPE is non-toxic and chemically inert and therefore safe for drinking water systems.
4. How long do HDPE pipes last under normal conditions?
   The service life of an HDPE pipe is typically 50-100 years depending on the quality of the installation and the grade of HDPE used.
5. Which HDPE pipe grade is suitable for high-pressure applications?
   PE100 is the best grade for high pressure applications and also used for industrial applications, and municipal networks.

Summary:
HDPE pipes have a number of properties that make it one of the few products that combine strength, durability, flexibility and a long term performance. Regardless of whether you need HDPE irrigation pipes, residential plumbing or a large municipal water distribution system, selecting the correct size, grade and supplier is critical.
Skipper HDPE pipes were engineered for low friction loss, long term value and strength, giving customers across India the assurance of using the right product.