Nepro PVC Pipes

7/30/2019 Nepro PVC Pipes

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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 besttechnical know how besides its highly qualified technical staff. Nepro at the early

stages introduced to the Saudi market uPVC pipes manufactured according toBristish Standard namely BS 3505, followed by ISO uPVC pipes. Nepro worked

actively with Saudi Arabian Standard Organization (SASO) on a new SaudiStandard

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 PVCand 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, theexpansion 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 newNepro FlowGuard CPVCpipes 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 ofappointed agents.Nepro is committed to the welfare and development of SaudiArabia

and other GCC Countries building and infrastructure sectors through manufacturingand introducing high quality products to the end user.

Issam Kairy KabbaniChairman of

IKK Group of Companies


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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 inch through 8 inch diameters.

MARKETINGNepro 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.

PVC 1120 Sch 80 690 PSI for water at 73F 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.


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PROPERTIES OF NEPRO ASTM PVC PIPES

Table 1

All values are registered at 230C (73

0F)

PropertiesTest Methodas per ASTM Unit Values

Mechanical

Tensile Strength

@ 73 0F D-638 PSI

7,500

7,280

Modulus of Elasticity in Tension @ 730F D-639 PSI 420,00

Comprehensive Strength

@ 730F D-695 PSI 9,600

Flexural Strength

@ 73 0F D-790 PSI 12,700

Izod Impact

@ 730F D-256

Ft-Lbs/In

Of Notch 0.65

Hardness

@ 730F

D-2240

D-785

DurometerD

Rockwell R

80+3

110-120

Thermal Properties

Coefficient of Thermal Linear D-696 In/in/0F 2.8x10

-5

Expansion per0F

Thermal Conductivity D-177 BTY/hr/ft2

/0

F/in 1.3Max. Operating Temp.

0F 140

Heat Deflection Temp.

@ 264 PSI D-6480

F

158

Electrical Properties

Dielectric Strength D-147 Volts/Mil

1400

Dielectric Constant

60 Hz @ 300

F D-150 3.25

Special Volume

Resistively @ 730

F D-257 Ohms/cm

3-5 x1015

General Properties

Specific Gravity D-792 g/cc

1.42

Water Absorption D-570 %


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DIMENSIONAL SPECIFICATION

Dmintions in table # 2 is based on ASTM D 1785 and ASTM D 2665

Table # 2 Schedule 40 Schedule 80

Nominal

Pipe size

Outside

Dimameter

Min. Wall

Thickness

Nominal

weight

Max

W.P

Min Wall

Thickness

Nominal

weight

Max

W.P

Inch Inch mm Inch mm kg./m PSI Inch mm kg./m PSI

0.840 21.336 0.109 2.77 0.248 600 0.147 3.37 0.309 850

1.050 26.670 0.113 2.87 0.329 480 0.154 3.91 0.418 690

1 1.315 33.401 0.133 3.38 0.483 450 0.179 4.55 0.614 630

1 1.660 42.164 0.140 3.56 0.652 370 0.191 4.85 0.850 520

1 1.900 48.260 0.145 3.68 0.779 330 0.200 5.08 1.030 470

2 2.375 60.325 0.154 3.91 1.040 280 0.218 5.54 1.430 400

2 2.847 73.02 0.203 5.16 1.65 300 0.276 7.01 2.18 420

3 3.500 88.900 0.216 5.49 2.160 260 0.300 7.62 2.910 370

4 4.500 114.300 0.237 6.02 3.070 220 0.337 8.56 4.260 320

6 6.625 168.275 0.280 7.11 5.14. 180 0.432 10.97 8.130 280

8 8.625 219.075 0.322 8.18 8.150 160 0.500 12.70 12.40 250Size 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

SDR 32.5W.P : 125 PSI

Bars :8.6

SDR 26W.P : 160 PSI

Bars :11

SDR 21W.P : 200 PSI

Bars :13.8

SDR 17W.P : 250 PSI

Bars :17.2

SDR 13.5W.P : 315 PSI

Bars :21.7

NominalPipe size

OutsideDimameter

Min. WallThickness

Min. WallThickness

Min. WallThickness

Min. WallThickness

MaxW.P

Inch mm Inch mm Inch Inch Inch PSI Inch mm Inch mm Inch mm

0.840 21.336 0.063 1.6

1.050 26.670 0.059 1.5 0.063 1.6 0.079 2.0

1 1.315 33.401 0.059 1.5 0.063 1.6 0.079 2.0 0.098 2.5

1 1.660 42.164 0.59 1.5 0.063 1.6 0.079 2.0 0.098 2.5 0.122 3.1

1 1.990 48.260 0.59 1.5 0.075 1.9 0.091 2.3 0.114 2.9 0.142 3.6

2 2.375 60.325 0.075 1.9 0.091 2.3 0.114 2.9 0.142 3.6 0.177 4.53 3.500 88.900 0.106 2.7 0.135 3.4 0.165 4.2 0.205 5.2 0.260 6.6

4 4.500 114.300 0.138 3.5 0.173 4.4 0.213 5.4 0.264 6.7 0.330 8.5

6 6.625 168.275 0.205 5.2 0.255 6.5 0.315 8.0 0.390 9.9 0.492 12.5

8 8.625 219.075 0.264 6.7 0.332 8.4 0.409 10.4 0.508 12.9 0.000 0.00The maximum pressure rating given above is based on water at 73F at 23C and for unthreaded pipes.

TEMPRATURE PRESSURE RELATIONSHIP

In case of operating Temperature is above 730

F / 230

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

OperatingTemperature(0 F) 73 80 90 100 110 115 120 125 130 140 150 160 170 180 200

% Correction 1.00 0.88 0.75 0.62 0.50 0.45 0.40 0.35 0.30 0.22 Not Recommended


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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 asmany 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 tometals. ie. Lower pressure losses.

Thermal Conductivity

-Nepro PVC pipes lower thermal conductivity than for metal which reduces heat losses and offer betteruniform 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 arenot 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 willcut 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 cementfittings 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 unableto travel along the pipe.

Non-Toxic

-Nepro PVC pipes are non-toxic and will not affect taste, smell or color of drinking water orany 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.


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SOLVENT WELDING PVC PIPES AND FITTINGS

INITIAL SET TIMS FOR SOLVENT CEMENT

TemperatureRange

Pipe Sizes to 1

Pipe Sizes1 to 2

Pipe Sizes2 to 8

60 0 - 100 0 F 2 minutes 3 minutes 30 minutes

40 0 - 60 0 F 5 minutes 8 minutes 2 hours

0 0 - 40 0 F 10 minutes 15 minutes 12 hours

*Note: Initial set schedule is the necessary time to allow before the joint can be carefully handled.

RECOMMENDED JOINT CURING CHARTRELATIVE

HUMIDITY 60% OR

LESS

Test Pressures for Pipe

Sizes

to 1

Test Pressures for

Pipe Sizes

1 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 1 hr. 6 hrs 2 hrs 12 hrs 6 hrs 24 hrs

40 0 - 60 0 F 2 hr. 12 hrs 4 hrs 24 hrs 12 hrs 48 hrs

0 0 - 40 0 F 8 hr. 48 hrs 16 hrs 96 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 1 11/2 2 3 4 6 8

NUMBER OF JOINTS 300 200 125 90 60 40 30 10 5

*NOTE: All above figures are estimates.


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HYDROSTATIC PRESSURE TESTING

1. The last assembled joint should be fully cured beforefilling the system with water.

2. All valves and air relief mechanisms should be opened atthe ends and elevations. The system should be filledslowly, flow velocities should not exceed 1 foot persecond. This will prevent surge, water hammer, and air

entrapment.

3. Water flow should continue until all entrapped air iscompletely flushed out of every branch of the system.Maintain the 1 ft/s velocity until every valve is checked. Arapidly fluctuating gauge needle during pressure rise may

be an indication that entrapped air still remains in thesystem.System should include the appropriate air relief andvacuum breaker valves to vent air during normal operationafter installation. Entrapped air is major cause of surgeand burst failure in plastic piping systems.

4. After filing the system, do not pressurize until theresponsible engineer is present to witness the test. Allpersonnel in the vicinity of the system should wear safetyglasses and hard hats. High voltage electrical equipmentshould be shield from a possible spray.

5. The piping, system should be pressurized to 125% of itsmaximum design operating pressure. This pressure mustnot exceed the working pressure of the lowest ratedcomponent in the system, i.e.. flanges, unions, threadparts, valves, etc.

6. The pressure test should not exceed 1 hours. This shouldprovide enough time to inspect all joints for leaks. If leaksare 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 concerningthese steps.

INSTALLATIONS

General Recommendations

1. HandlingCompared to steel, iron or copper pipe, PVC pipe and

fittings have a lower impact resistance (especially at lowtemperatures) Care should be exercised during

transportation and installation of PVC Pipe installed inhigh impact areas should be protected accordingly.

2. Solvent Cement WeldingThis method of joining is very simple and reliable if it isfollowed correctly, but any deviations from the

recommended basic steps may reduce the strength andintegrity of the joint. The procedures for preparation,insertion, and curing should be followed very carefully.

3. Expansion and ContractionThe coefficient of linear expansion of PVC pipe is greater

than that of metallic piping: therefore, take this factor intoconsideration when designing and installing a PVC pipingsystem.

4. Hanging and SupportingThe modulus of elasticity of PVC pipe is smaller than it isfor metal pipes. Maximum working temperature and roomtemperature should be considered when determining therequired support spacing.

5. Trench PreparationWhen laying PVC pipe below the ground, care should be

taken to remove all rocks, boards, empty primer andcement cans, brushes, bottles and other debris from the

trench. Smaller diameters of pipe should be snaked inthe trench to allow for expansion and contraction. Ifsolvent cement welding is used for the method of joining,

snaking, pressure testing, and pipe movement should notbe done until after the joints have been given sufficienttime to dry.

6. Temperature/PressureThe working pressure of PVC pipe and fittings varies withchanges in temperature. Before putting a piping systeminto service, the maximum working temperature and the

maximum working pressure should be verified. (Table 4)

7. PVC for Non-Liquid TransportThe manufacturer does not recommend its PVC products

for use in air or compressed gas systems. PVC pipes andfittings are excellent products for the transport of water

and corrosive chemicals, but there are a number of otherpiping products that are especially designed and suitablefor compressed air and gases.

8. Testing

Never use air of gas for pressure testing PVC piping

systems. Before water-testing a system, flush out allentrapped air (see above Hydrostatic Pressure System).


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NEPRO ASTM Standard Fabricated Fittings

Table # 5

Register and Repair CouplingNominal

Pipe Size

Inch

1 1 1 2 3 4 6 8

Coupling

Length (mm)60 65 75 95 95 125 160 185 250 360

P / S Couplin with regester P / S Couplin without regester

Table # 6

Long Radius BendsNominal

Pipe Size

Inch

1 1 1 2 3 4 6 8

Outside 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 Inchmm 376.20 3.588.90 4.5114.30 5.5139.70 7177.80 8.8223.52 12.5317.50 15381 22558.80 31787.40

Above long radius bends are available in 900, 45

0, 221/2

0and 111/4

0.

*Note: Various Angles and Radius are available upon requests.

Table #5

Regester and repair couplings

8' x 8"

8' x 6"

8' x 4"


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