HDPE PIPE MANUFACTURING UNIT

High-density polyethylene (HDPE) is a polyethylene thermoplastic made from petroleum. It is known for its large strength-to-density ratio. The density of HDPE can range from 0.93 to 0.97g/cm3 or 970Kg/m3. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength. It is also harder and more opaque and can withstand much higher temperatures (120°C for short periods, 110°C continuously). High-density polyethylene, unlike polypropylene, cannot withstand normally required autoclaving conditions. The lack of branching is ensured by an appropriate choice of catalyst (e.g., Ziegler-Natta catalysts) and reaction conditions.

HDPE pipes are important plastic products which have wide range of applications. These have more tensile strength in comparison to other plastic pipes. These are being used for Sprinkler Irrigation System, potable water supply and sewerage purpose. Their low cost, easily installation and better durability make them ideal for the purpose. They also offer very good resistance to most of the chemicals and have excellent electrical insulation properties. These pipes are also used for circulation of acids in various chemical industries due to their acid resistant quality.

The demand of HDPE Pipes are likely to increase due to their wide use in various sectors in India. Apart from its regular uses, such as for irrigation system, water supply, sewerage, it is being used by Department of Telecommunication for conduit for optical fiber cables. Looking to its increased demand, it appears to be good scope for setting up new small scale industries. Hence the product has good market potential.

CLASSIFICATION

(A) Pipes shall be classified according to the grade of materials as MRS; Polyethylene pipes and classified by the raw materials used in the production of attachments. MRS material strength values of 20°C is also shown by the internal pressure for 50 years.

Raw material class MRS(MPa) value
PE 63 6.3
PE 80 8.0
PE 100 10

(B) Pipes by pressure rating (PN) corresponding to the maximum shall be classified permissible working pressure at 3WC, as follows:

The pressure grades available according to European standards are:
• PN 2.5 – max pressure 2.5 bar
• PN 4 – max pressure 4 bar
• PN 6 – max pressure 6 bar
• PN 10 – max pressure 10 bar
• PN 16 – max pressure 16 bar

Color codes used to indicate the pressure grades on the pipes are:

Color Code PE Pressure Grade
Yellow PN 4
Red PN 6
Blue PN 10
Green PN 1

HDPE Pipes for following grades/sizes/pressure rating

PE 63 PN 2.5 DN 63 to 110
PE 63 PN 4 DN 40 to 110
PE 63 PN 6 DN 32 to 110
PE 63 PN 8 DN 32 to 110
PE 63 PN 10 DN 32 to 110
PE 63 PN 12.5 DN 32 to 110
PE 63 PN 16 DN 32 to 110
PE 80 PN 2.5 DN 90 to 110
PE 80 PN 4 DN 50 to 110
PE 80 PN 6 DN 40 to 110
PE 80 PN 8 DN 32 to 110
PE 80 PN 10 DN 32 to 110
PE 80 PN 12.5 DN 32 to 110
PE 80 PN 16 DN 32 to 110
PE 100 PN 6 DN 50 to 110
PE 100 PN 8 DN 40 to 110
PE 100 PN 10 DN 32 to 110
PE 100 PN 12.5 DN 32 to 110
PE 100 PN 16 DN 32 to 110