PE (GAS PIPE)


Initially HDPE, PE 50, & PE 63 were being used for gas distribution. But the MRS of these materials was relatively low and hence application was limited to low pressure pipes only. Then by the end 70s, HDPE PE 80 material introduced. This has better MRS than previous material and was used extremely for gas pipe in many countries. The real boom in PE gas pipe came after the introduction of MDPE. This had the same MRS 8.0 MPa rating but gave a more flexible pipe with improved slow crack growth propagation and better long term performance. And this is the material for gas pipe not only in India but all over the world.


Hari Plaast manufactures PE (GAS PIPE) pipes as per IS:14885 standards in both PE 80 and PE 100 grades, in outer diameters varying from 16mm to 250mm in all pressure ratings with latest manufacturing technology under strict quality control. The Color of the pipe is black with yellow line or yellow color.


Salient Features & Advantages:


  • High resistance to slow crack propagation & resistant to rapid crack propagation.
  • Excellent ESCR
  • Extremely smooth interior surface finish
  • Very low permeation to gases
  • Frost resistance
  • Resistance to aggressive media & soil
  • No deposition, encrustation & leaching out
  • Excellent fusion characteristics
  • Very wide service temp range-40 to 80
  • Very good reeling Properties
  • Good Squeeze off properties
  • in weight, easy to transport, handle and lay & longer Life.

Application of PE Gas pipes


MDPE piping systems are the preferred means for transportation and distribution of natural gas worldwide.


Standard and specification for Gas pipes:


DIMENSION OF POLYETHYLENE PIPES FOR GASEOUS FUELS AS PER IS: 14885/2001

NOMINAL OUT SIDE DIA.

WALL THICKNESS

SDR 17.6 SDR 13.5

SDR 11.0

SDR 9.0
MM TOL. OVALITY MIN MAX MIN MAX MIN MAX MIN MAX
  (+) (MM) (MM) (MM) (MM) (MM) (MM) (MM) (MM) (MM) (MM)
16 0.3 1.2 2.3 2.7 2.3 2.7 3.0 3.4 3.0 3.4
20 0.3 1.2 2.3 2.7 2.3 2.7 3.0 3.4 3.0 3.4
25 0.3 1.2 2.3 2.7 2.3 2.7 3.0 3.4 3.0 3.4
32 0.3 1.2 2.3 2.7 2.3 2.7 3.0 3.4 3.6 4.1
 
40 0.4 1.4 2.3 2.7 3 3.4 3.7 4.2 4.5 5.1
50 0.5 1.4 2.9 3.3 3.7 4.2 4.6 5.2 5.6 6.3
63 0.6 1.5 3.6 4.1 4.7 5.3 5.8 6.5 7.1 8.0
75 0.7 1.6 4.3 4.9 5.5 6.2 6.8 7.6 8.4 9.4
 
90 0.9 1.8 5.2 5.9 6.6 7.4 8.2 9.2 10.1 11.3
110 1.0 2.2 6.3 7.1 8.1 9.1 10 11.1 12.3 13.7
125 1.2 2.5 7.1 8.0 9.2 10.3 11.4 12.7 14 15.5
140 1.3 2.8 8.0 8.9 10.3 11.5 12.7 14.1 15.7 17.4
 
160 1.5 3.2 9.1 10.2 11.8 13.1 14.6 16.2 17.9 19.8
180 1.7 3.6 10.3 11.5 13.3 14.8 16.4 18.2 20.1 22.3
200 1.8 4.0 11.4 12.7 14.7 16.3 18.2 20.2 22.4 24.8
225 2.1 4.5 12.8 14.2 16.6 18.4 20.5 22.7 25.1 27.8
 
250 2.3 5.0 14.2 15.8 18.4 20.4 22.7 25.1 27.9 30.8
280 2.6 9.8 16.0 17.7 20.6 22.8 25.4 28.1 31.3 34.6
315 2.9 11.2 17.9 19.8 23.2 25.7 28.6 31.6 35.2 38.9
355 3.2 12.5 20.2 22.4 26.1 28.9 32.3 35.7 39.7 43.8
 
400 3.6 14.0 22.8 25.2 29.4 32.5 36.4 40.2 44.7 49.3
450 4.1 15.8 25.6 28.3 33.1 36.6 41.0 45.2 50.3 55.5
500 4.5 17.5 28.5 31.5 36.8 40.6 45.5 50.2 55.8 61.5
560 5.0 19.6 31.9 35.2 41.2 45.5 51.0 56.2 - -
630 5.7 22.1 35.8 39.5 46.3 51.1 57.3 63.2 - -



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DIMENSION OF POLYETHYLENE PIPES FOR GASEOUS FUELS AS PER ISO 4437

Standard dimension ratio SDR 11 SDR 17  SDR 26
Pipe Series S-5 S-8 S-12.5
Nominal Pressure (Bar) 4 2.5 1
Outside dia (mm)

 

Wall thick.( mm). Wall thick.( mm). Wall thick.( mm).
dcom dCT. dmax MIN MAX MIN MAX MIN MAX
20 20.3 20.3 3.0 3.5 - - - -
25 25.3 25.3 3.0 3.5 - - - -
32 32.3 32.3 3.0 3.5 - - - -
40 40.4 40.4 3.7 4.3 - - - -
 
50 50.4 50.5 4.6 5.3 3 3.5 - -
63 63.4 63.6 5.8 6.6 3.8 4.4 - -
63 0.6 1.5 3.6 4.1 4.7 5.3 - -
75 0.7 1.6 4.3 4.9 5.5 6.2 - -
 
110 110.6 111 10.0 11.2 6.5 7.4 - -
125 125.6 126.2 11.4 12.8 7.4 8.4 - -
140 140.8 141.3 12.8 14.3 8.3 9.4 - -
160 161.0 161.5 14.6 16.3 9.5 10.7 - -
 
180 181.2 181.7 16.4 18.3 10.6 11.7 - -
200 201.3 201.8 18.2 20.3 11.8 13.2 7.7 8.7
225 226.4 227.1 20.5 22.8 13.3 14.9 8.7 9.8
250 251.5 252.3 22.8 25.3 14.8 16.5 9.7 10.9
 
280 281.6 282.6 28.7 31.8 18.6 20.7 10.8 12.8
315 316.8 317.9 32.3 35.8 20.9 23.2 12.2 13.7
355 357.1 358.2 36.4 42.1 23.6 27.4 13.7 15.3
400 402.3 403.6 41.0 47.4 26.5 30.7 15.4 18.0
 
450 452.6 454.1 41.0 47.4 26.5 30.7 17.4 20.3
500 502.9 504.5 45.5 52.6 29.5 34.2 19.3 22.4
560 - 565.1 51.0 58.9 33.0 38.2 21.6 25.1
630 - 635.7 57.3 66.1 37.1 42.9 24.328.2

Quality Assurance:


At Hari Plaast quality throughout the manufacturing process is an inherent value that assures the highest performance. Our manufacturing facilities start with only superior grade, polyethylene resins that have been specifically formulated for long-term integrity and performance in gas distribution systems.

Computer controlled extrusion techniques are utilized in the manufacture of our pipe to ensure quality. In addition, continuous wall monitoring during manufacture results in dimensional consistency.

Hari Plaast ®, gas pipes are produced in compliance with relevant Standard and specification. In addition to continuous dimension monitoring during manufacture, quick burst tests are routinely conducted to confirm short and long-term performance.

Long-term hydrostatic testing is also performed according to Gas pipe specification which confirms that our products continually meet the established performance criteria.

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