HDPE Pipe

We offer a wide range of High Density Polyethylene (HDPE) Pipes which are uses across various industries as well as water supply in agriculture & domestic purpose. CAPITAL HDPE pipes are manufactured from 100% virgin PE granules to ensure our committment of best quality. HDPE Pipes are the best option in today's market due to its advantages over cast iron G.I. Pipe, mild & stainless steel pipes because of properties like resistence to corrosion, durable, light in weight & flexibility etc.

Specifications

Range Dia.  :  16 mm to 450 mm OD
Standard     :   IS 4984 : 2016
Grade           :   PE 63, PE 80, PE 100
Color             :   Blacke with Three Stripes
Application  :   Water Supply, Lift Irrigation, Drip Main & Distribution Pipe Line, Chemical, Food & Dairy Plants Pipe Lines insted of Metal Or Cement Pipes.
 

Mechanical and Physical Properties

           Property                                                       Value                                      Unit
 Density (Base Material)                                         940– 965                             Kg/M³
 Melt flow index (192°C /2.16 Kg)                           ≤ 0.3                                    g /10 Minutes
 Melt flow index (192°C /5.0 Kg)                             0.2 – 1.1                              g /10 Minutes
 VST                                                                       120 - 130                             °C
 Crystalline melting Range                                     130 - 133                            °C
 Viscosity Number                                                  390                                      Cm³/g
 Hardness                                                               58 – 65                                Shore “ D”
 Tensile Strength at Yield                                        20 – 26                                MPa
 Ultimate tensile Strength                                       30                                         MPa
 Elongation At Break                                              >600                                     %
 Elastic Modulus                                                     900 - 1200                           MPa
 Flexural Stress (3.5% Deflection)                          13.8 – 20.3                          MPa
 Charpy Notched Impact at                                     0°C 16                                 KJ/M²
 Thermal Stability at 210°C                                     ≥20                                      Minutes
 Carbon Black Content                                            2 - 3                                     %


 

PE Pipe Wall Thickness for raised temperature

The wall thickness of pipes are based on the maximum allowable hydrostatic design stress at 30°C water temperature for 50 years of life. In case of variation in water temperature, the working pressure needs to be modified as per given chart. However, occasional rise in temperature as in summer seaoson with concurrent corresponding reduction in temperature during night has no deleterious effects on the life and working pressure of PE pipes

 Generation                  Material grade            Material             Method of mfr.
First Generation             PE32 & PE40                   LDPE                      Unimodal
Remarks: Manufacturing method did not change with the field requirement.
Second Generation        PE 63 & PE 80                 HDPE                     Unimodal
Second Generation                PE 80                      MDPE                      Unimodal
Remarks: Method of manufacturing has changed to give better strength to the raw material.
Third Generation             PE80 & PE100                HDPE                      Bimodal
Third Generation                      PE80                     MDPE                      Bimodal

Why we choose polyethylene (PE) pipes as against AC/CI or DI?

Polyethylene pipe systems offer significant advantages over ductile iron, steel and cement systems. Some of its advantages are as follows
 
  • Longevity: PE pipes have the Long track record of excellent performance, approaching 100 years worldwide.
  •  Corrosion resistance: PE is basically chemically inert. This pipe system does not rust and corrode. This system resists chemical attack from aggressive soils. There is no need for protective layer or finishing process. PE pipe has very good abrasion resistance also.
  •  Leak tight: Butt fused joints create a homogenous system. The fusion weld for this system is very strong Therefore, unlike ring type joints or the other mechanical jointing systems, there is no risk of leakage resulting from joint distortion.
  • Optimum flow rate: Smooth inside pipe surface allows for a high Hazen-Williams “c” factor. “c” remains constant throughout the lifetime of the system due to an innate high resistance to scale and biological build up.Polyethylene (PE) is also biologically inert.
  • Excellent water hammer characteristics to withstand surges: The inherent properties of polyethylene allow the system to significantly lower the effect of surges compared to PVC and ductile iron systems.
  • Flexibility: PE pipes can be coiled and supplied in length of up to 300m for small diameter pipes. This feature is one of the ma ny contributions to cost savings during the installation process.
  • Resistance to geological conditions: PE piping systems have inherent resistance to ground temperature fluctuations and earth instability because of high impact and breakage resistance.
  • Seismic Resistance: The toughness, ductility and flexibility of PE pipe combined with its other special properties, such as its leak-free fully restrained heat fused joints, make it well suited for installation in dynamic soil environments and in areas prone to earthquakes.
  • Abrasion Resistance: PE pipe is a frequent choice for the transport of granular or slurry solutions, such as sand, fly ash and coal. The advantage of polyethylene in these applications is its wear resistance, which for example when conveying fine grain slurries has been shown in laboratory tests to be three to five times greater than for steel pipe. PE pipe has elastic properties that under proper flow conditions allow particles to bounce off its surface. This feature combined with PE’s toughness results in a service life that exceeds that of many metal piping materials. There are several factors that affect the wear resistance of a pipeline. The concentration, size and shape of the solid materials, along with the pipe diameter and flow velocity, are the major parameters that will affect the life of the pipeline.
  • High strain allowed virtually eliminated failure due to freezing pipes.
  • PE pipe can Achieve Maximum Cold Bending Radius
  • Reduced installation costs

Jointing Methods

  •  Butt Fusion
  •  Saddle Fusion
  •  Electro Fusion
  •  Flange Joint
  •  Insert Joint
  •  Compression Joint
  •  Shoulder Groove Joint
  •  Sure Loc Joint
  •  Threaded Joint.

Capital Polyplast manufactures PE Pipe and Fittings which are widely accepted in following applications.

 
Industrial         Infrastructure    
          • Untreated and Treated Effluent
• Chemical Process Lines     • Stay Cable Pipe for Cable Stayed Bridges
• Corrosive Liquids       • Desalination Plant    
• Effluent Disposal       • Culverts and Storm Water Drains
• Building & Construction     • Thermal & Nuclear Power Station
• Fertilizers       • Hydel Power Plants  
• Food Processing Industry     • Dredging & Sand Stowing  
• Marine Intake and Outfall     • Infiltration Gallery  
• Salt Pan                
• Fire Fighting Systems     Mining Industry    
• Material Handling - Pneumatic Conveyance • Leach Lines    
of Particulates       • Coal Decant Systems  
• Fly-Ash Slurry and others     • Mine Drainage    
          • Coal Tailings    
Sewerage       • Slurry and Sludge Transport  
• Pumping Main for Sewerage     • De-watering    
• Force Main for Sewer     • Dust Suppression    
• Gravity Main for Sewer     • Sand Stowing    
• Rehabilitation of Sewer Lines          
          Gas & Air      
Irrigation & Agricultural     • Natural and LP Gas Distribution
• Rising Main & Distribution Systems   • Coal Bed Methane Gas Collection
• Lift and Gravity Irrigation     & Distribution    
• Drip Irrigation       • Air: Chilled air conveyance  
• Gated Pipe Irrigation     • Bio-gas conveyance  
• Sprinkler Irrigation     • Inert gas conveyance (argon,  
• Sub Soil Drainage       nitrogen, helium)    
• Aquaculture              
          Ducting      
Municipalities, Corporations and Public Utilities • Electrical Cable Ducting  
• Pumping Mains for Water     • Telecommunication Cable Ducting
• Potable Water Distribution System   • Optical Fibre Cable Ducting  
• House Service Connections     • Micro Duct - House Connections
• Waste Water Treatment Plants.          
• Aeration and Odour Control Ducting          
• Landfill - Leachate Collection &          
Conveyance              
• Landfill - Methane Gas Extraction          
& Convenyance              
 

Advantages of HDPE Pipes

  • Long Efficient 100 years of Service Life
  • Light in Weight, Flexible and Fatigue Resistant
  • Joints are Monolithic and 100% Leak-proof
  • Operation and Maintenance Cost as good as NIL
  • Low Energy Consumption & shall Not Increase with Time (highest C value among pipe MOCs, Hazen Williams C value = 150)
  • Acidic or Alkaline soil-state environment do not affect
  • Lowest Water Hammer/Surge pressure effect among all pipe materials
  • Resistant to Hydrogen Sulphide Gas, High Abrasion Resistance
  • Superior Chemical Resistance Fluid pH ranging from 1 to 14
  • Suitable in Earthquake Prone area & Unstable Soil Strata
  • Suitable for Underwater Installation (construction advantages)
  • Suitable for Undulating Land
  • Low Life Cycle Cost due to Non-bio Degradability & Low Pumping Cost
  • Offers many advantages in Trenchless Construction


 

S.No.

  

Features Characteristics

1

   Life Expectancy

 PE Pipe has a Life Expectancy of about 100 years.
2   Joint

 PE pipe is normally joined by butt fusion method which creates a joint that is as strong or
 stronger than the pipe itself, and is virtually leak free
3   Leak Proof

 Butt-fused joints create a homogenous, monolithic joint leading to leak proof system.
4

  Corrosion Resistance
  & Biological Effects

 Does not rust, rot, or corrode. Capital PE pipes are non-conducting and inert and hence immune to
 galvanic and electrochemical corrosion. Capital PE pipes do not rust or corrode, both inside and
 outside. PE pipes do  not degrade due to biological effects. They are not digestible and do not contain
 ingredients that would  attract animals like rodents. The exceptionally smooth and flexible surfaces of
 the Capital PE pipes do not offer any abrasion effects to rodent's teeth like steel, CI and DI pipes.
5   Chemical Resistance

 PE pipe has excellent chemical resistance. pH is 1 to 14
6   UV Protection

 Black PE pipe containing 2 to 3.0% carbon black can be safely used outside in the sun without
 damage from UV exposure.
7   Impact & Toughness

 Tough and good Impact Resistance.
8   Pressure Ratings & Dia,

 PE pipe is available in various sizes 16mm 450 mm dia. and pressure ratings of PN-2, PN2.5, PN-3.2,
 PN-4, PN-5, PN-6, PN-8, PN-10, PN-12.5 & PN-16, PN-20 ( PN = kgf/cm²)  DSR41, SDR33, SDR26,
 SDR21, SDR17, SDR13.6, SDR11, SDR9, SDR7.4, SDR6
9   Lightweight

 It is lighter than Metal or Concrete pipe.
 It is easier to handle & install as compared to above materials.
10   Flexibility

 PE pipe can be bent to a minimum radius of 25 times the pipe diameter. This flexibility of PE pipe         
 allows it to be curved under, over & around obstacles as well as directional changes.
11   Coiled Pipe

 PE pipe is also available in coil form upto 140mm dia. with specific SDR.
12

  Earth quake / Soil
  settlement resistance

 Found good in case of earth quake and soil settlement. Capital PE pipes have excellent resistance to
 Environmental Stress Cracking which is due to the combined actions of stress and the environment.     
 The strain ability of Capital PE pipes under stress is higher than any conventional pipes, thereby the
 pipes never fail due to prism loads and soil settlement due to seasonal changes
13   Water Hammer

 The water hammer effect in the Capital PE pipes are the lowest when compared to conventional pipes
 for similar operating conditions, thereby reducing the number of safety appurtenances necessary in     
 the system as well the cost of maintenance.