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  HDPE Pipes and Fittings
 
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  H.D.P.E Pipes and Fittings  
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   Introduction :
  
 
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  HDPE Pipes have been used for piping system in various industries primarily because of its excellent resistance to cursive chemicals, its inherent toughness and ease of installation. HDPE pipe is definitely not substitute for conventional pipes but it is actually superior type product for many applications. The superiority of HDPE pipes are especially proven in the following properties   pipes
 
 
  > Economical than traditional pipe material.
  > Resistance to chemicals-exceptional resistance to all external and internal cormorants.
  > Resistance to electrolytic corrosion.
  > Will not rush or rot.
 
>
 
Welded joints speed installation. Trench widths can be reduced which leads to saving in the cost of excavation and back filling.
 
>
 
Light Weight - One sixth of the weight of steel. Low specific gravity giving an outstanding light weight product for easy transportation, handling, fitting etc.
  > Very good thermal insulation due to low thermal conductivity.
  > Smooth bore provides less head loss. Flow resistance is approximately 30% less than that of conventional pipes, permitting the use of a smaller bore pipe for a given rate of flow.
  > Perfect stability for material obviates the risk of ageing.
  > Total neutrality of products conveyed.
  > Flame resistance classifying the materials as self extinguishing, according to test standard employed.
  > Low maintenance cost.
  > Easy to install.
  > Longer Life tahn G.I., M.S. Cement & Other Pipes.
 
     
  Flexible :  
 
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pipes   DutronTM pipes have a high flexural impact strength which enable them to withstand momentary, higher pressure (caused by water hammer, etc..) than their rated capacity. The flexibility of the pipes also enables them to be laid without leveling trenches since they can.
     
Durable :
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DutronTM pipes manufactured as per IS:4984:95 are designed for a working life of 50 years at 27oC and the rated pressure. They are designed for a stress of 50 kgf/cm2 which with a safety factor of 1.3, permits a working stress of 39.5 kgf/cm2. The pipe grade HDPE used includes ultraviolet absorbers, antitoxins and additives to prevent the degradation of the pipe due to weather.
 
     
  Power - Saving :   
 
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Encrustation is virtually nil in Jyoti pipes resulting in tremendous energy savings, since pumping cost remains the same throughout the operating span. The smoother flow results in shorter pumping times with resultant savings in electricity. It also enables a smaller dia pipe to be selected for the same flow, compared to metal pipes.   pipes
     
Corposion - Resistant :
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DutronTM pipes are non-corrosive and are impervious to any aggressive soil or water conditions. Their paraffin structure gives them a high degree of resistance to chemical attack; consequently they are insoluble in practically all chemicals at room temperatures, making them the ideal choice for chemical industries.
 
     
  Easy Tranportability :  
 
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pipes   DutronTM pipes can be extruded in any continuous length. Pipes of smaller diameters can be coiled by the kilometer while larger diameter pipes can be cut into lengths of the most economic transportable size, to be butt welded together at the installation site.
 
     
  Smooth :  
 
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DutronTM pipes have a smooth outer and inner surface. the coefficient of friction (C factor) of 150 as per Hazen Williems formula is constant throughout the life of the pipe as compared to a 'C' factor of 100 for metallic pipes.   pipes
     
Abrasion - Resistant :
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The results obtained in foreign countries from many different test have shown that HDPE pipes may be included in the category of abrasion-resistant materials.
 
     
  Applications :  
  Effluents and Waste Water Disposal :  
 
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pipes   pipes   pipes
Pipe End
Sprinkler T
Reducer
     
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Sprinkler Bend
900 Bend
Slip on flange
     
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Equal tee
Sprinkler
   
Domestic Gas Distributions :
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Earlier, with the introduction of HDPE pipes, engineers always carried a psychological fear to use HDPE pipes or rather plastic pipes for conveyance of inflammable gases. However, experiments and extensive trials proved these fears totally unfounded and established excellence of performance of HDPE pipes for conveyance of all combustible gases. Experiments have also proved that the permeability losses are insignificant in regard to safety and environmental impact.

Now a days, DutronTM pipes are widely and effectively used for carrying natural gas, coal gas, biogas, etc.
   
Submarine Pipelines :
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One of the most important applications where all salient features of DutronTM pipes prominently figure out is for underwater pipelines. DutronTM pipes have been successfully laid for underwater river crossings, creek crossings, marine outfalls and for brine intake lines in the open sea. Hazardous chemical effluents and radioactive wastes are being harmlessly disposed into deep sea through DutronTM pipes with substantial cost savings. Schemes which would have been dropped due to economical unavailability have been made feasible with DutronTM pipes.   pipes
 
 
 
Agriculture :
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DutronTM pipes are successfully meeting increasing demand from the agriculturist for flow, lift, sprikler and drip irrigation. Apart from ease of operation, conservation of energy is a vital factor. Low-cost and highly efficient DutronTM sprinkler system has been accepted by farmers for higher yields. DutronTM pipes have been used for many lift irrigation schemes with the benefit of one additional crop.

Farmers use DutronTM pipes for suction and delivery lines on their pupmpsets to save energy and to get better pump efficiency.
 
     
 
Potable Water Supply :
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DutronTM pipes are an instant choice for water supply specialists, in rural and urban water supply schemes because of quik-n-speedy execution and maintenance free services. Schemes with DutronTM pipes have almost double the life compared to schemes with conventional pipes which is an additional characteristic for making decision.

DutronTM pipes only have made water supply schemes feasible in sub-zero temparatures at high attitudes of 1000-4000 mtrs as any other pipe would rupture frequently due to freezing of water. Elastic DutronTM pipes would expand comfortably and easily as the water swells whil freezing wihout stress-cracking and would resume normal bore when it melts regardless of the frequency of climate reaching freezing temparatures. Drought relief pipelines or dewatering schemes for flood-relief can be laid quickly using DutronTM pipes.
 
     
     
 
STANDARD FOR HDPE PIPE
 
Rating SDR against nominal outside diameter (OD) gives the following minimum
                                                          wall thickness chart:
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PE 100 ISO 4427 PE 80 ISO 4427 DIN 8074
  RATED PRESSURE
PN-BAR		 RATED PRESSURE PN-BAR RATED PRESSURE PN-BAR
  10 12.5 16 6 8 10 12.5 16 4 6 10 16
SDR 17 13.6 11 21 17 13.6 11 9 26 17.6 11 7.25
 
 
OD Wall thickness (mm) Wall thickness (mm) Wall thickness (mm)
20 - - - - - - -
2.3
 -
1.8
1.9
2.8
25 - - - - - -
2.3
2.8
 -
1.8
2.3
3.5
32 - - 3.0 - - -
3.0
3.6
1.8
1.9
3.0
4.5
40 - - 3.7 - - -
3.7
4.5
1.8
2.3
3.7
5.6
50 - - 4.6 - - -
4.6
5.6
2.0
2.9
4.6
6.9
63 - 4.7 5.8 - -
4.7
5.8
7.1
2.5
3.6
5.8
8.7
75 4.5 5.6 6.8 -
4.5
5.6
6.8
8.4
2.9
4.3
6.9
10.4
90 5.4 6.7 8.2
4.3
5.4
6.7
8.2
10.1
3.5
5.1
8.2
12.5
110 6.6 8.1 10.0
5.3
6.6
8.1
10.0
12.3
4.3
6.3
10.0
15.2
125 7.4 9.2 11.4
6.0
7.4
9.2
11.4
14.0
4.9
7.1
11.4
17.3
140 8.3 10.3 12.7
6.7
8.3
10.3
12.7
15.7
5.4
8.0
12.8
19.4
160 9.5 11.8 14.6
7.7
9.5
11.8
14.6
17.9
6.2
9.1
14.6
22.1
180 10.7 13.3 16.4
8.6
10.7
13.3
16.4
20.1
7.0
10.2
16.4
24.9
200 11.9 14.7 18.2
9.6
11.9
14.7
18.2
22.4
7.7
11.4
18.2
27.6
225 13.4 16.6 20.5
10.8
13.4
16.6
20.5
25.2
8.7
12.8
20.5
31.1
250 14.8 18.4 22.7
11.9
14.8
18.4
22.7
27.9
9.7
14.2
22.8
34.5
280 16.6 20.6 25.4
13.4
16.6
20.6
25.4
31.3
10.8
15.9
25.5
38.7
315 18.7 23.2 28.6
15.0
18.7
23.2
28.6
35.2
12.2
17.9
28.7
43.5
355 21.1 26.1 32.2
16.9
21.1
26.1
32.2
39.7
13.7
20.1
32.3
49.0
400 23.7 29.4 46.3
19.1
23.7
29.4
36.3
44.7
15.4
22.7
36.4
55.2
 
            
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