General Properties
and Quality Standards of BLUEBELL uPVC Main Pressure
Pipe
BLUEBELL uPVC Pressure Pipe is extruded in nominal
six (6) meter lengths from virgin unplasticized polyvinyl
chloride (uPVC) materials. The pipe is produced with
the bell-shape socket end which has an internal groove
that accommodates the special BLUEBELL PIPE-SEAL RUBBER
RING. The other end of the pipe is chamfered into a
spigot shape. Jointing of the uPVC pipeline is simply
done by pushing the spigot end of the pipe into the
socket end of the nest pipe to make a watertight joint.
The color of the pipe is blue.
The name BLUEBELL stands for the BLUE color and Bell
end uPVC piping system. The pipe is manufactured in
nominal outside diameter from 63mm to 315mm, suitable
for working pressure up to 1.2 MPa. The extruded uPVC
pipe has a smooth inner wall which provides a low resistance,
hence better flow efficiency. BLUEBELL uPVC Pressure
Pipelines can be assembled under any temperature and
weather condition. The jointed uPVC pipes, under normal
circumstances, are not required to be cooled before
backfilling, as any subsequent thermal movement will
be taken up in the joints. It also eliminates the need
to delay hydrostatic testing, assuring all concrete
thrust block and anchorage block have reached their
adequate strength, as there immediately, the pipes
have already been joined watertight. In comparing BLUEBELL
uPVC Pressure Piping System and
the solvent cement system, experience has shown that
BLUEBELL uPVC Pressure Pipes can be joined faster
that the solvent cement system of pipeline jointing.
Below is the list of properties and manufacturing
(testing) standards of BLUEBELL uPVC Pressure Pipe:
| PROPERTY |
VALUE |
UNIT |
TEST METHOD |
Physical
Characteristics |
Appearance |
The pipe shall be homogenous throughout and free from cracks, holes, encrustations and other foreign inclusions |
PNS 65:1993 |
| Color |
The color of the pipe shall be blue nearest to RAL 5012 |
PNS 65:1993 |
| Effect of Materials on Water Quality |
see table 1 |
PNS 65:1993 /
PNS 966 |
| |
No disintegration |
PNS 65:1993 /
PNS 978 |
| Resistance to Acetone |
The mass shall not increase by more than 0.316 g nor decrease by more than 0.013 g. |
PNS 65:1993 /
PNS 979 |
Physical
Properties |
Vicat Softening Temperature, min. |
76 |
ºC |
PNS 65:1993 /
PNS 952 |
| Longitudinal Reversion, max. |
5 |
% |
PNS 65:1993 /
PNS 951 |
| Water Absorption, max. |
40 |
g / m2 |
PNS 65:1993 /
PNS 953 |
Mechanical
Properties |
Hydrostatic Pressure |
see table 2 |
PNS 65:1993 /
PNS 509 |
| Resistance to External Blows, max. |
10 |
% |
PNS 65:1993 /
PNS 697 |
| Flattening, min. |
60 |
% |
PNS 65:1993 /
PNS 800 |
|
Effect of Materials on Water Quality – When
used under the conditions for which they are designed,
non-metallic materials in contact with, or likely to
come into contact with potable water shall not constitute
a toxic hazard, shall not constitute a microbial growth
and shall not give rise to unpleasant taste or odor,
cloudiness or discoloration of the water.
Concentration of substances, chemicals and biological
agents leached from materials in contact with potable
water and measurements of the relevant organoleptic
/ physical parameters shall not exceed the maximum
values recommended by the World Health Organization
in its publication “Guidelines for drinking water
quality” Vol. 1 “Recommendations” (WHO,
Geneva, 1984).
If lead or mono / di-alkyl tin compounds are permitted
to be used as stabilizers, the quantity of lead or
tin measured as metals shall be determined in accordance
with the method prescribed in PNS 966. The permitted
levels shall not exceed the limits specified in table
1.
| Table 1 – Maximum Levels of Toxic Substances |
Toxic Substances
mg/L |
Extraction |
Total Concentration
of 3 Extracts |
| 1st |
3rd |
| Lead |
1.00 |
0.05 |
|
| Di-alkyl Tin, C4 and other higher monologues measured as tin |
|
0.02 |
|
| Cadmium |
|
|
0.01 |
| Mercury |
|
|
0.001 |
|
The Pipe shall conform to the applied pressure for
the hydrostatic pressure tests indicated in Table 2
when tested in accordance with PNS 509.
| Unit: Mpa |
| Table 2 – Applied Pressure Test at 28ºC |
| Series |
10 |
8 |
7 |
5 |
| Burst Pressure |
3.80 |
4.56 |
5.49 |
7.10 |
| Short Term Pressure |
3.60 |
4.30 |
5.20 |
6.70 |
| Long Term Pressure |
2.50 |
3.00 |
3.60 |
4.65 |
|
Chemical Properties and Resistance of BLUEBELL uPVC
Pressure Pipe
BLUEBELL uPVC PRESSURE PIPE is highly resistant to
carious corrosive fluids including acids, alkalis,
salts and other chemical solutions as indicated in
the following table. Information shown on this table
are based on research and actual laboratory tests conducted
in the factory which are believed to be accurate. This
table is intended to serve as a guide for the application
of BLUEBELL uPVC PRESSURE PIPE in the transport and
conveyance of various chemical materials.
click
here to see the table
|
