Unplaticised
PVC (Rigid PVC) Pipes is one of the most important developments
of the last few decades in that it reduces the cost and improves
the reliability of pipeline installations. Here is a man-made
group of materials (for they resemble Alloys rather than pure
metals because the properties can be varied by small additions
of modifying agents) which have definite and controlled mechanical
properties.
Salient
Features of Rohit Agricultural uPVC Pipe
Smoother
boreb in comparison to AC, GI pipes thereby better flow -characterstic.
Seamless
strong and resilient.
Resistence
to chemical, electrolytic and galvanic corrosion.
Odourless
and hygenic for transporting portable water as they do not
subject to ccontamination.
Self
extinguishing quality eliminates need fire resistant coating.
Thermal
conductivity : 4x104 Cal./Hr.CM2/oC/CM.
Coefficient
linear expansion : 5.0 to 6.0x105 mm/m/oc.
A
specific gravity of 1.41 gm/cm2.
The
combined fiexural
and compressive strength of uPVC is 600kg/cm2 .
Electrical
resistance of 20oC for uPVC is 3kg/cm2
Vicat
softening point 81oC.
Longer
lasting-uPVC is free from weakness caused by scale formation.
rusting, weathering & chemical action makes uPVC more
durable for rated working conditions.
Table
of Properties
|
Properties of PVC (Polyviny
chloride)
|
|
Property
|
Value
|
Unit
|
|
Tensite
Strength
|
6000
|
Lb/In2
|
|
Compressive
Strength
|
8500
|
Lb/In2
|
|
Youngs
Modules
|
4.0x105
|
Lb/In2
|
|
Flexural
strength
|
11500
|
Lb/In2
|
|
Safe
stress at 23C
|
80
|
kg/cm2
|
|
Co-effeicient
of thermal expansion
|
5x105
|
per
oC
|
|
Specific
Heat
|
9.25
|
Cal/goC
|
|
Thermal
conductivity
|
17x106
|
w/moC
|
|
Burning
Rate
|
Self
extinguishing
|
-
|
|
Ignition
by flame
|
difficult
|
-
|
|
Softering
point
|
75-88
|
oC
|
|
Specific
gravity
|
1.4
|
-
|
|
Volume
resistance
|
1015
|
ohms
|
|
Dielectric
strength
|
1400
|
volt/mil
|
|
BDV
|
18
|
kv/mm
|
|
Weathering
|
Excellent
|
-
|
|
Abrasion
resistance
|
good
|
-
|
|
Ageing
|
good
|
-
|
|
Co-efficient
of linear expansion
|
5-6x105
|
oC
|
|
Thermal
conductivity
|
.255x104
|
cal/cm/cm2/sec/oC
|
|
Water
absoption
|
0.1
|
%
|
|
Power
factor at 800 c/sec.
|
0.02
|
-
|
|
Dielectric
constant
|
3-3.3
|
-
|
|
Hardness
|
80
|
shore
D
|
|
Modulus
of elasticity
|
30.00
|
kg/cm2
|
