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THE ADVANTAGES OF DWC PIPE ARE
The main advantage of DWC are:
APPLICATIONS
Tele com application DWC
Electrical applications
In the electrical networks, the main application oF DWC are:
A.Protection casing of street lighting cable – pole to pole application
DWC ducts help in designing an easy – to – maintain street lighting network. Instead of laying it directly buried, the street lighting cable is installed insiide the DWC duct. The advantage are:
Easy laying of cable upon completion of civil work
Easy of maintenance as cables are free to move inside the duct.
Easy to upgrade/replace the cables.
B.Protection casing application of power cables in city distribution network – anexcellent and cost effective alternative to GI, RCC and PVC pipes in
Rail/road crossing
Across rivers, culverts and disused canals(nallahas)
C.Along bridges using black UV protected DWC
a.DWC for protective casing of street lighting cable
b. .DWC for protective casing of power/telecom cables
DWC COMPARISION WITH RCC, GI AND DUCTS
|
Property |
DWC pipe |
RCC pipe |
Gi pipe |
PVC pipe |
|
Chemical Resistance |
Good resistance to acid & alkalis |
No resistance to most alkalis & acid |
Low resistance to acids & alkalis |
Moderate resistance to most alkalis and acid |
|
Soil settlement |
Being flexible, adjust itself to soil statement does not crack |
Does not adjust itself to soil statement and cracks |
Does not adjust itself to soil settlement and get stresses |
Does not adjust itself to soil settlement and cracks |
|
Transporation & handling |
Easy handle due to lightweight Cost of trasportation is low |
Very heavy & brittle, difficult to handle, chance to breakages during handling and transportation is high. |
Very heavy. Cost of transportation is very high |
Easy handling, However losser occur due to breakage caused due to its limited flixibility |
|
flexibility |
Flexible, can be bent to a radius as low as 10 * O.D of the duct |
Rigid, cannot be bend |
Rigid, cannot be bend |
Rigid, cannot be bend |
|
No. of joints |
Lesss no. of joints, Can be supplied to coil from in length up to 30m |
More joints, supply length 1.5. to 2.0m |
More joints, Standerd supply length 6.0m |
More joints, Standerd supply length 6.0m |
|
Laying of Additional Duct/Replacement of ducts and cables |
Possible due to aligned joints, continous length and smooth bends |
Not possible high chances of breakage/damages. Re- digging is necessary |
Not possible due to Sharp bends Re- rigging is necessary |
Not possible as joint are of permanent nature, Re- rigging is necessary |
TECHNICAL DATA
|
Nominal Size |
Mm |
50 |
63 |
77 |
90 |
110 |
120 |
160 |
175 |
200 |
|
O.D |
mm |
50 |
63 |
77 |
90 |
110 |
120 |
160 |
175 |
200 |
|
I.D |
mm |
38 |
50 |
63 |
75 |
95 |
103 |
135 |
147 |
174 |
|
Min bending |
Radius |
700 |
1100 |
1100 |
2000 |
3600 |
3600 |
NA |
NA |
NA |
|
I.D of Coil |
mm |
1400 |
- |
850 |
1000 |
- |
1400 |
NA |
NA |
NA |
|
Standerd Colour |
black |
black |
black |
black |
black |
black |
black |
black |
black |
black |
STANDERD LENGHTS
This ducts are available in 6mtr bar lenghts as well as coil form. Coil form is suggested in smaller size as it become a big coil in bigger sizes which is very bulky and is not economical in transportation
UNIQUE FEATURES ON REQUEST
Anti Rodency To avoid rodent Attacks.
Non Flame Propogation Properties. Propection with resistance to flame prapogating.
Permanently Lubricated Silicore Inner layer. With extra smooth inner layer to facilitate blowing optical fiber cable.
STANDARD
DWC duct is BIS certified and it is manufacture in compliance with the relevent international and national standerds like BS EN 50086 and IS 14930 PART - | and ||