1
FOREWORD
New Products Industries (Nepro), National Factory for Plastic pipes and fittings
took the early initiative in 1969 of introducing uPVC pipes production to the Saudi
Market, becoming the first Saudi local uPVC pipes manufacturer. Ever since Nepro
implemented a strict policy of providing high quality uPVC pipes manufactured
under strict quality control for the growing market.
Nepro had committed itself to install most modern machinery, acquiring the best
technical know how besides its highly qualified technical staff. Nepro at the early
stages introduced to the Saudi market uPVC pipes manufactured according to
Bristish Standard namely BS 3505, followed by ISO uPVC pipes. Nepro worked
actively with Saudi Arabian Standard Organization (SASO) on a new Saudi
Standard
in early 70s until the SAS 14 and 15 came to effect, uPVC pipes were then
manufactured to SASO standard, followed by the introduction of ASTM rigid PVC
and the production of ASTM conduit pipes as well as CPVC pipes for Hot and Cold
water systems. Early 90 's had seen two very important development at Nepro, the
expansion of factory area by 50 of it original space and its association with B.F.
Goodrich world leader of CPVC raw materials manufacturer to produce under
their license the new Nepro FlowGuard™ CPVC pipes and fittings.
Nepro pipes and fittings are marketed locally by National Marketing Establishment
through its ten (10) fully established branches and overseas through a number of
appointed agents.Nepro is committed to the welfare and development of Saudi
Arabia
and other GCC Countries building and infrastructure sectors through manufacturing
and introducing high quality products to the end user.
Issam Kairy Kabbani
Chairman of
IKK Group of Companies
2
Nepro ASTM standard Rigid PVC pipes are manufactured at our Jeddah Factory to meet the ever growing
demand in the Commercial, Housing, Irrigation and Industrial sectors as well as the various amenities in
the Kingdom of Saudi Arabia.
To assure Nepro clients of its quality over finished products, Factory is maintaining through out its
operation a Quality Assure System based on ISO 9002 over raw materials as well as finished products to
guarantee the right products for a safe, tough & reliable system.
Nepro materials fully meet or exceed the requirements of class 12454-B in accordance with ASTM D 1784
Type 1, Grade 1 compound designated as PVC 1120.
NEPRO RIGID PVC PIPES PHYSICAL DIMENSIONS
A
PVC Pipes schedule 40 (white) and schedule 80 (grey) series
meet the requirements of ASTM standard specification ASTM D-1785.
B
PVC SDR Pipes (white) series meet the requirements of ASTM D 2241
C
PVC DWV Pipes (Drain, Waste and Vent) (White) series meet the requirements
of ASTM D 2665.
NEPRO PVC PIPES RANGE
Nepro ASTM Rigid PVC Pipes are offered between ½ inch through 8 inch diameters.
MARKETING
Nepro ASTM PVC Pipes are marked as prescribed in the various ASTM standards indicating
manufacturer name, material designation code, nominal pipe size, schedule
size with pressure rating in PSI water at 73 0F and manufacturing date as follows.
¾” PVC 1120 Sch 80 690 PSI for water at 73°F ASTM 1785 NEPRO Jeddah
KSA 21-05-97
APPLICATIONS
Nepro ASTM Rigid PVC Pipes are suitable for:
Cold drinking water, irrigation systems, internal & external drainage (DWV) systems,
as well as ventilation systems.
Nepro ASTM Rigid PVC pipes are suitable and compatible with ASTM standard fittings.
Nepro ASTM Rigid PVC Pipes approval includes: Saudi Aramco, Sceco,Royal
Commission, Sabic, Hotels, Industrial Factories and several
Consulting offices as well as ministries, etc….
3
PROPERTIES OF NEPRO ASTM PVC PIPES
Table 1
All values are registered at 23 0C (73 0F)
Test Method
as per ASTM
Unit
Values
Tensile Strength
@ 73 0F
D-638
PSI
7,500
7,280
Modulus of Elasticity in Tension @ 73 0F
D-639
PSI
420,00
Comprehensive Strength
@ 73 0F
D-695
PSI
9,600
Flexural Strength
@ 73 0F
D-790
PSI
12,700
Izod Impact
@ 73 0F
D-256
Ft-Lbs/In
Of Notch
0.65
D-2240
D-785
Durometer”D”
Rockwell “R”
80+3
110-120
D-696
In/in/0F
2.8x10-5
D-177
BTY/hr/ft2 /0 F/in
0
F
1.3
140
Properties
Mechanical
Hardness
@ 73 0F
Thermal Properties
Coefficient of Thermal Linear
Expansion per 0F
Thermal Conductivity
Max. Operating Temp.
Heat Deflection Temp.
@ 264 PSI
Electrical Properties
Dielectric Strength
Dielectric Constant
60 Hz @ 30 0 F
Special Volume
Resistively @ 73 0 F
General Properties
Specific Gravity
Water Absorption
Cell Designation
Flame Spread E-84
Poison’s Ration @ 73 0 F
Smoke Density
Friction Coefficient
D-648
D-147
0
F
Volts/Mil
D-150
158
1400
3.25
D-257
Ohms/cm
3-5 x10 15
D-792
D-570
D-1784
‘g/cc
%
Hazen William
Factor C
1.42
<0.05%
12454-B
< 25
0.38
500
150
4
DIMENSIONAL SPECIFICATION
Dmintions in table # 2 is based on ASTM D 1785 and ASTM D 2665
Table # 2
Nominal
Pipe size
Inch
½
¾
1
1¼
1½
2
2½
3
4
6
8
Schedule 40
Outside
Dimameter
Inch
mm
0.840
21.336
1.050
26.670
1.315
33.401
1.660
42.164
1.900
48.260
2.375
60.325
2.847
73.02
3.500
88.900
4.500
114.300
6.625
168.275
8.625
219.075
Min. Wall
Thickness
Inch
mm
0.109
2.77
0.113
2.87
0.133
3.38
0.140
3.56
0.145
3.68
0.154
3.91
0.203
5.16
0.216
5.49
0.237
6.02
0.280
7.11
0.322
8.18
Schedule 80
Nominal
weight
kg./m
0.248
0.329
0.483
0.652
0.779
1.040
1.65
2.160
3.070
5.14.
8.150
Max
W.P
PSI
600
480
450
370
330
280
300
260
220
180
160
Min Wall
Thickness
Inch
mm
0.147
3.37
0.154
3.91
0.179
4.55
0.191
4.85
0.200
5.08
0.218
5.54
0.276
7.01
0.300
7.62
0.337
8.56
0.432
10.97
0.500
12.70
Nominal
weight
kg./m
0.309
0.418
0.614
0.850
1.030
1.430
2.18
2.910
4.260
8.130
12.40
Max
W.P
PSI
850
690
630
520
470
400
420
370
320
280
250
Size and dimension of schedule 40 pipes fully confirm the requirements of ASTM D 2665
Dmintions in table # 3 is based on ASTM 2241
Table # 3
Nominal
Pipe size
Inch mm
Outside
Dimameter
Inch
mm
½
¾
1
1¼
1½
2
3
4
6
8
0.840
1.050
1.315
1.660
1.990
2.375
3.500
4.500
6.625
8.625
21.336
26.670
33.401
42.164
48.260
60.325
88.900
114.300
168.275
219.075
SDR 32.5
W.P : 125 PSI
Bars :8.6
SDR 26
W.P : 160 PSI
Bars :11
SDR 21
W.P : 200 PSI
Bars :13.8
SDR 17
W.P : 250 PSI
Bars :17.2
Min. Wall
Thickness
Inch
Inch
Min. Wall
Thickness
Inch
PSI
Min. Wall
Thickness
Inch
mm
Min. Wall
Thickness
Inch
mm
Inch
mm
0.059
0.063
0.075
0.091
0.135
0.173
0.255
0.332
0.059
0.063
0.079
0.091
0.114
0.165
0.213
0.315
0.409
0.063
0.079
0.098
0.114
0.142
0.205
0.264
0.390
0.508
0.063
0.079
0.098
0.122
0.142
0.177
0.260
0.330
0.492
0.000
1.6
2.0
2.5
3.1
3.6
4.5
6.6
8.5
12.5
0.00
0.59
0.59
0.075
0.106
0.138
0.205
0.264
1.5
1.5
1.9
2.7
3.5
5.2
6.7
1.5
1.6
1.9
2.3
3.4
4.4
6.5
8.4
1.5
1.6
2.0
2.3
2.9
4.2
5.4
8.0
10.4
1.6
2.0
2.5
2.9
3.6
5.2
6.7
9.9
12.9
SDR 13.5
W.P : 315 PSI
Bars :21.7
Max
W.P
The maximum pressure rating given above is based on water at 73°F at 23°C and for unthreaded pipes.
TEMPRATURE PRESSURE RELATIONSHIP
In case of operating Temperature is above 73 0 F / 23 0 C, working pressure must be derated as shown in Table # 4.
Temperature Correction Factor
Table # 4 0 C
23
26.7
32.2
37.8
43.3
46.1
48.9
51.7
54.4
60
65.5
71.1
76.7
82.2
93.3
Operating
Temperature(0 F)
73
80
90
100
110
115
120
125
130
140
150
160
170
180
200
1.00
0.88
0.75
0.62
0.50
0.45
0.40
0.35
0.30
0.22
% Correction
5
Not Recommended
ADVANTAGES OF NEPRO PIPES OVER CONVENTIONAL PIPING MATERIALS
Corrosion Resistance
- Nepro PVC pipes are chemically resistance to nearly all acids, Alkalis, Alcohol, halogens as well as
many other corrosive fluids. Being non-conductor of electricity, it eliminates galvanic or electrolytic
corrosion which is the cause of expensive repairs.
Fluid Friction
- Nepro PVC pipes being a mirror-smooth inner surface has lower friction loss as compared to
metals. ie. Lower pressure losses.
Thermal Conductivity
- Nepro PVC pipes lower thermal conductivity than for metal which reduces heat losses and offer better
uniform fluid temperature (Insulation is normally not required).
Mechanical Strength
- Nepro PVC pipes have great strength yet are flexible to withstand displacement in the pipe lines. Pipes are
not dented or flattened under pressure.
Weight
- Nepro PVC pipes are light in weight, having a specific weight which is one fifth of steel pipes. This will
cut down transportation costs and facilitate pipes installation.
Ease of Installation & Maintenance
- Nepro PVC pipes are quick and easy to install and maintained with complete range of solvent cement
fittings saving time, effort and money as it is light in weight and easy to handle.
Fire Proof
- Nepro PVC pipes do not support combustion and are self extinguishing. In case of fire, flames are unable
to travel along the pipe.
Non-Toxic
- Nepro PVC pipes are non-toxic and will not affect taste, smell or color of drinking water or
any other liquid.
H A N D L I N G & S T O R A G E OF P V C P I P E S
Nepro PVC pipes should be adequately supported during handling and storage, pipes should not come into
severe contact with sharp objects such as corners of truck beds, buildings, forklift trucks or other obstacle
on the ground. Forklifts forks must never be inserted into the ends of pipes as a means of lifting or moving.
Pipes to be stacked in layers with the socket, placed at alternative ends with socket protruding outside.
PVC Pipes should not be exposed to solar radiation for any length of time, ultraviolet rays may cause
discoloration. It is recommend to stock pipes in a cool ventilated and shady palce.
For in field storage, where racks are not available, the ground should be leveled flat, free from coarse
stones and dry. Pipes stored should not exceed 1.5 meter height.
6
SOLVENT WELDING PVC PIPES AND FITTINGS
INITIAL SET TIMS FOR SOLVENT CEMENT
Temperature
Range
60 0 - 100 0 F
40 0 - 60 0 F
0 0 - 40 0 F
Pipe Sizes
½” to 1 ¼”
2 minutes
5 minutes
10 minutes
Pipe Sizes
1 ½” to 2”
3 minutes
8 minutes
15 minutes
Pipe Sizes
2½” to 8”
30 minutes
2 hours
12 hours
*Note: Initial set schedule is the necessary time to allow before the joint can be carefully handled.
RECOMMENDED JOINT CURING CHART
RELATIVE
HUMIDITY 60% OR
LESS
Test Pressures for Pipe
Sizes
½” to 1 ¼”
Test Pressures for
Pipe Sizes
1 ½” to 3”
Test Pressures for
Pipe Sizes
4 to 8”
Temperature Range
During Assembly
and cure periods
Up to
180
psi
Above
180 to
370 psi
Up to
180
psi
Above
180 to
315 psi
Up to
180
psi
Above
180 to
315 psi
60 0 - 100 0 F
40 0 - 60 0 F
0 0 - 40 0 F
1 hr.
2 hr.
8 hr.
6 hrs
12 hrs
48 hrs
2 hrs
4 hrs
16 hrs
12 hrs
24 hrs
96 hrs
6 hrs
12 hrs
48 hrs
24 hrs
48 hrs
8 days
In damp or humid weather allow 50% more cure time.
*NOTE: Joint cure schedule is the necessary time to allow before pressurizing system.
AVERAGE NUMBER OF JOINTS/QUART OF CEMENT
PIPE DIAMETER
NUMBER OF JOINTS
½”
300
¾”
200
1”
125
11/2”
90
*NOTE: All above figures are estimates.
7
2”
60
3”
40
4”
30
6”
10
8”
5
HYDROSTATIC PRESSURE TESTING
1.
The last assembled joint should be fully cured before
filling the system with water.
2.
All valves and air relief mechanisms should be opened at
the ends and elevations. The system should be filled
slowly, flow velocities should not exceed 1 foot per
second. This will prevent surge, water hammer, and air
entrapment.
3.
Water flow should continue until all entrapped air is
completely flushed out of every branch of the system.
Maintain the 1 ft/s velocity until every valve is checked. A
rapidly fluctuating gauge needle during pressure rise may
be an indication that entrapped air still remains in the
system.
System should include the appropriate air relief and
vacuum breaker valves to vent air during normal operation
after installation. Entrapped air is major cause of surge
and burst failure in plastic piping systems.
4.
After filing the system, do not pressurize until the
responsible engineer is present to witness the test. All
personnel in the vicinity of the system should wear safety
glasses and hard hats. High voltage electrical equipment
should be shield from a possible spray.
5.
The piping, system should be pressurized to 125% of its
maximum design operating pressure. This pressure must
not exceed the working pressure of the lowest rated
component in the system, i.e.. flanges, unions, thread
parts, valves, etc.
6.
The pressure test should not exceed 1 hours. This should
provide enough time to inspect all joints for leaks. If leaks
are found, pressure must be relieved and the leak repaired.
The system should then be recharged and re-tested.
Consult the factory if you have any questions concerning
these steps.
INSTALLATIONS
General Recommendations
5.
Solvent Cement Welding
This method of joining is very simple and reliable if it is
followed correctly, but any deviations from the
recommended basic steps may reduce the strength and
integrity of the joint. The procedures for preparation,
insertion, and curing should be followed very carefully.
Trench Preparation
When laying PVC pipe below the ground, care should be
taken to remove all rocks, boards, empty primer and
cement cans, brushes, bottles and other debris from the
trench. Smaller diameters of pipe should be “snaked” in
the trench to allow for expansion and contraction. If
solvent cement welding is used for the method of joining,
snaking, pressure testing, and pipe movement should not
be done until after the joints have been given sufficient
time to dry.
6.
Expansion and Contraction
The coefficient of linear expansion of PVC pipe is greater
than that of metallic piping: therefore, take this factor into
consideration when designing and installing a PVC piping
system.
Temperature/Pressure
The working pressure of PVC pipe and fittings varies with
changes in temperature. Before putting a piping system
into service, the maximum working temperature and the
maximum working pressure should be verified. (Table 4)
7.
PVC for Non-Liquid Transport
The manufacturer does not recommend its PVC products
for use in air or compressed gas systems. PVC pipes and
fittings are excellent products for the transport of water
and corrosive chemicals, but there are a number of other
piping products that are especially designed and suitable
for compressed air and gases.
8.
Testing
Never use air of gas for pressure testing PVC piping
systems. Before water-testing a system, flush out all
entrapped air (see above Hydrostatic Pressure System).
1.
Handling
Compared to steel, iron or copper pipe, PVC pipe and
fittings have a lower impact resistance (especially at low
temperatures) Care should be exercised during
transportation and installation of PVC Pipe installed in
high impact areas should be protected accordingly.
2.
3.
4.
Hanging and Supporting
The modulus of elasticity of PVC pipe is smaller than it is
for metal pipes. Maximum working temperature and room
temperature should be considered when determining the
required support spacing.
8
NEPRO ASTM Standard Fabricated Fittings
Table # 5
Register and Repair Coupling
Nominal
Pipe Size
Inch
Coupling
Length (mm)
½
¾
1
1¼
1½
2
3
4
6
8
60
65
75
95
95
125
160
185
250
360
P / S Couplin with regester
P / S Couplin without regester
Table # 6
Long Radius Bends
Nominal
Pipe Size
Inch
Outside
½
¾
1
1¼
1½
2
3
4
6
8
Inch
0.840
1.050
1.315
1.660
1.900
2.375
3.500
4.500
6.625
8.625
Diameter
mm
21.33
26.67
33.40
42.16
48.26
60.30
88.90
114.30
168.28
219.08
Radius
Inch
mm
3
76.20
3.5
88.90
4.5
114.30
5.5
139.70
7
177.80
8.8
223.52
12.5
317.50
15
381
22
558.80
31
787.40
Above long radius bends are available in 900 , 450 , 221/20 and 111/40 .
*Note: Various Angles and Radius are available upon requests.
Table #5
Regester and repair couplings
8' x 8"
8' x 6"
8' x 4"
9
10
11