nationalkham

Edit Template

UPVC Pressure Pipes

Our main product is Unplasticized Polyvinyl Chloride (uPVC) pipes, manufactured in compliance with international standards such as I.S.O, B.S, A.S.T.M, S.A.S.O, and others. These pipes are designed to be the best alternative to metal pipes.

The uPVC alternative is more affordable, efficient, lightweight, and easy to transport and install. It is also resistant to corrosion and chemicals. Compared to polypropylene and polyethylene, uPVC pipes are more cost-effective, have a longer lifespan, and offer better hygiene performance. In today’s modern lifestyle, uPVC pipes are considered a superior technical solution.

uPVC pipes are widely used in critical applications, including high-quality conduits for electrical wiring systems, sewage and drainage for residential and multi-story buildings (both above and underground).

At National Kham Plastic Factory, our uPVC pipes are produced in various sizes and thicknesses to suit all working conditions. Our products are sold in local markets and across neighboring Gulf countries. With a successful management system in place, National Kham Plastic Factory is committed to producing high-quality and environmentally friendly products, making us the right choice for your piping needs.

Dimensions of uPVC Pressure Pipes According to DIN and Saudi Standards

ClassClassIClass2Class3Class4Class5
Nominal inPressure Bars2BAR4BAR6BAR10BAR16BAR
Nom-OD mmTolerance on Nom-OD mmNom-wt. kg/mNom-wt. kg/mNom thick of wall mmNom-wt. kg/mNom thick of wall mmNom-wt. kg/mNom thick of wall mmNom-wt. kg/mNom thick of wall mmNom-wt. kg/m
20+0.21.50.137
25+0.21.50.1741.90.212
32+0.21.80.2642.40.342
40+0.21.80.3341.90.3530.525
50+0.21.80.4222.40.5523.70.809
63+0.21.90.56230.8544.71.28
75+0.31.80.6422.20.7823.61.225.61.82
90+0.31.90.7742.71.134.31.756.72.61
110+0.31.80.952.21.163.21.645.32.618.23.9
125+0.31.81.082.51.483.72.1363.649.35.01
140+0.41.81.212.81.844.12.656.74.1810.46.27
160+0.41.81.393.22.414.73.447.75.4711.98.17
180+0.41.81.573.63.025.34.378.66.8813.410.4
200+0.41.81.7443.75.95.379.68.5114.912.8
225+0.51.81.964.54.76.66.7610.810.816.716.1
250+0.522.44.95.657.38.3111.913.218.619.9
280+0.62.33.115.57.118.210.413.416.620.824.9
315+0.62.53.786.29.029.213.21520.923.431.5
355+0.72.94.88711.410.416.716.926.526.339.9
400+0.73.26.17.914.511.721.119.133.729.750.8
450+0.83.67.658.918.313.226.821.542.733.1
500+0.94.09.389.822.414.632.923.952.636.8
630+1.15.014.712.435.718.452.230.083.4
710+1.25.718.914.045.320.766.1
800+1.36.423.915.757.223.383.9

SASO-ISO 1452-2/Wall thickness and their tolerances

(SDRS 20 41)(SDRS 16 33)(SDRS 12,5 26)(SDRS 10 21)(SDRS8 17)(SDRS 6,3 13,6)(SDRS5 11)
NominalpressurePNbased ondesigncoefficientC 2,5
NominalPN6PN8PN10PN12,5PN16PN20
outside diameter, dntminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/m
20----------1,50.141,90.17
25-------1,50.181,90.222,30.26
32-1,50.231,60.251,90.282,40.352,90.41
40--1,50.291,60.311,90.362,40.453,00.543,70.65
50--1,60.392,00.482,40.573,00.693,70.834,61.01
632,00.602,50.753,00.883,81.094,71.325,81.59
752,30.842,91.023,61.534,51.545,61.876,82.22
90--2,81.203,51.484,31.805,42.216,72.688,23.22
NominalPN6PN8PN10PN12,5PN16PN20PN25
outside diameter,tminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/mtminWt. kg/m
1102,71.433,41.784,22.175,32.696,63.288,13.9710,04.77
1253,11.873,92.294,82.796,03.437,44.189,25.1111,46.18
1403,52.344,32.855,43.526,74.308,35.2510,36.3912,77.70
1604,03.034,93.676,24.617,75.639,56.8511,88.3414,610.10
1804,43.775,54.656,95.748,67.0710,78.6613,310.5816,412.77
2004,94.626,25.827,77.119,68.7611,910.6814,712.9718,215.74
2255,55.856,97.248,68.9310,811.0613,413.5416,616.47--
2506,27.327,78.979,611.0611,913.5314,816.5918,420.28I
2806,99.068,611.2110,713.7913,417.0716,620.8320,625.41
3157,711.389,714.1912,117.5615,021.4518,726.3823,232.19-
3558,714.4610,917.9413,622.1816,927.2221,133.5626,140.80
4009,818.3212,322.8415,328.1219,134.7023,742.4029,451.74II
45011,023.1013,828.7517,235.5421,543.8726,753.7133,165.53-I
50012,328.7415,335.4519,143.8323,954.1129,766.3536,880.84-
56013,735.2717,241.4121,454.1526,765.80---
63015,445.2419,356.2424,169.5830,085.52I---II
71017,457.5521,871.4527,288.42II-I-
80019,671.9424,583.9030,6110.40--I---

SASO - ISO - 1452 // Nominal outside diameters and tolerances Dimensions in millimeters

Nominal outside diameterdnTolerance for mean outside diameter, demxTolerance for out-of-roundnessbS 20 to S 16cS 12,5 to S 5c
120.20.5
160.20.5
200.20.5
250.20.5
320.20.5
400.21.40.5
500.21.40.6
630.31.50.8
750.31.60.9
900.31.81.1
1100.42.21.4
1250.42.51.5
1400.52.81.7
1600.53.22
1800.68.62.2
2000.642.4
2250.74.52.7
2500.853
2800.96.83.4
31517.63.8
3551.18.64.3
4001.29.64.8
4501.41.085.4
5001.5126

UPVC pipes according to ASTMD - 1785, Schedule 40 & Schedule 80

Nominal size Inch.O.D (mm) minO.D (mm) maxSchedule 40 Wall Thickness (mm) minSchedule 40 Wall Thickness (mm) maxSchedule 40 Nominal Weight (kg/m)Schedule 40 PSISchedule 80 Wall Thickness (mm) minSchedule 80 Wall Thickness (mm) maxSchedule 80 Nominal Weight (kg/m)Schedule 80 PSI
1/1/200121.2421.442.773.280.246003.734.240.3850
3/3/200126.5726.772.873.380.334803.914.420.43690
133.2733.533.383.890.484504.555.080.61630
12/31/200342.0342.293.564.070.653704.855.440.87520
12/31/200148.1148.413.684.190.773305.085.691.03470
260.1760.473.914.421.042805.546.21.43400
1/31/200272.8473.25.165.771.573007.017.852.2420
388.889.15.496.152.142607.628.532.91370
4114.1114.56.026.733.052208.569.584.26320
5141.05141.556.227.3474.181909.5210.674.42290
6168168.567.117.985.3718010.9712.298.13280
8218.7219.468.189.178.1116012.714.2212.4250

Length: 6 meters (Other lengths are available on request)
Colour: Schedule 40 – White, Schedule 80 – Grey
Socket Type: Plain, solvent cement (SC/J)

UPVC Pressure-rated pipes According to ASTMD 2241

Nominal size Inch.O.D (mm)Wall Thickness (mm)
minmaxStandard Diameter Ratio (SDR)
41 W.P: 6.9 Bar32.5 W.P: 8.6 Bar26 W.P: 11 Bar21 W.P: 13.8 Bar17 W.P: 17.2 Bar
minmaxminmaxminmaxminmaxmin
1/1/200121.2421.44
3/3/200126.5726.771.522.03
133.2733.531.522.031.62.111.962.46
12/31/200342.0342.291.522.031.632.132.012.52
12/31/200148.1148.411.522.031.852.362.292.8
260.1760.471.852.362.312.822.873.38
388.789.12.162.672.743.253.433.944.244.755.235.87
4114.07114.532.83.33.514.014.394.95.446.16.737.54
6168168.564.114.625.185.796.487.268.0399.9111.1
8218.7219.465.335.976.737.548.439.4510.4111.6612.914.45

The maximum pressure rating given is based on water at 73°F / 23°C and of unthreaded pipes

Length: 6 meters (Other lengths are available on request)
Colour: White
Socket Type: Plain, solvent cement (SC/J)

UPVC pipes according to BS 3505 / 3506

Applications: Water supply, irrigation systems, industrial use.

Nominal size Inch.O.D (mm) minO.D (mm) maxClass B minClass B maxClass C minClass C maxClass D minClass D maxClass E minClass E maxClass O minClass O maxClass 6 minClass 6 maxClass 7 minClass 7 max
3/7/20011717.31.51.92.32.83.23.8
1/1/200121.221.51.72.12.83.33.74.3
3/3/200126.626.91.92.52.93.43.94.5
133.433.72.22.73.444.55.2
12/31/200342.142.42.22.72.73.23.64.24.85.5
12/31/200148.148.42.533.13.71.82.23.74.35.15.9
260.260.52.533.13.73.94.51.82.25.56.3
1/31/20027575.333.53.94.54.85.51.82.2
388.789.12.93.43.54.14.65.35.76.61.82.2
4114.1114.53.444.55.266.97.38.42.32.8
5140140.43.84.45.56.47.38.4910.42.63.1
6168168.54.55.26.67.68.810.210.812.53.13.7
8218.8219.45.36.17.8910.311.912.614.53.13.7

Note: Classes B, C, D and E are to BS 3505/3506. Classes 0, 6 and 7 are to BS 3506/1969. Classes 6 and 7 equivalent to ASTMD-1785, SCH 40 and SCH 80 respectively.

Length: 6 meters (Other Lengths are available on request.)
Colour: Dark Grey except class . which is grey.
Socket Type: Plain, solvent cement (SC/J)

Pressure ratings for working pressure at 20°C

Pressure Class
6.0 bar
B
9.0 bar
C
12.0 bar
D
15.0 bar
E

UPVC Sewer Pipes (Gravity) According to DIN 19534.

Applications: Sewerage Pipe Underground

Nominal sizeOutsideDiameter (mm)Wall Thickness(mm)Insertion
(mm)DTolerance(S)ToleranceDepyh (mm)Weight kg/m
1101100.330.5+1151.63
1251250.330.5+1201.87
1601600.43.60.6+1322.65
2002000.44.50.7+1454.12
2502500.56.10.9+1607
3153150.67.71.0+18011.11
4004000.79.81.2+20017.8
5005000.912.21.5+25027.649

Length: 6 meters (Other Lengths are available on request.)
Socket Type: Solvent cement (SC/J) type, Rubber Joint (R/J) type.

UPVC Drain Pipes According to DIN 19531

Applications: Waste & Soil discharge systems inside buildings

Nominal sizeOutsideDiameter (mm)Wall Thickness(mm)
(mm)MinMaxMinMaxWeight kg/m
404040.21.82.20.381
505050.21.82.20.481
757575.31.82.20.642
110110110.32.22.71.160
125125125.32.531.480
160160160.43.23.82.410

Length: 6 meters (Other Lengths are available on request.)
Colour: Gray.
Socket Type: Solvent cement (SC/J) type, Rubber Joint (R/J) type.

UPVC Underground Sewer Pipe (Gravity) According to BS 5481

Applications: Gravity Sewerage Underground

Nominal size (mm)Outside Diameter (mm)Outside Diameter (mm)Wall Thickness (mm)Wall Thickness (mm)Weight kg/m
MinMaxMinMax
200 (8")200200.64.95.64.5
250 (10")250250.76.177.01
315 (12")315315.97.78.711.07
400 (16")4004019.81117.83

UPVC Underground Drainage & Sewerage Pipes according to BS 4660

Applications: Drainage Under Gardens, Fields, Driveways & Roads

Nominal sizeOutside Diameter (mm)Outside Diameter (mm)Wall Thickness (mm)Wall Thickness (mm)Weight kg/m
(mm)MinMaxMinMax
110 (4")110110.43.23.81.64
160 (6")160160.64.14.83.04

Length: 6 & 5.8 meters (Other lengths are available on request).
Socket Type: Solvent cement (SC/J) type, Rubber Joint (R/J) type

UPVC Aboveground Soil & Ventilating Pipes according to BS 4514

Applications: Soil & Ventilating Pipes Aboveground

Nominal size (mm)Outside Diameter (mm)Outside Diameter (mm)Wall Thickness (mm)Wall Thickness (mm)Weight kg/m
MinMaxMinMax
82 (3")82.482.83.23.81.21
110 (4")110110.43.23.81.64
160 (6")160160.63.33.92.47
```

Length: 6 & 5.8 meters (Other lengths are available on request).
Socket Type: Solvent cement (SC/J) type, Rubber Joint (R/J) type
Non standard lengths & colours available on request.

SASO-ISO 4435/ Table 3 Mean outside diameters.

Dimensions in millimeters

Nominal size DN/ODNominal outside diameter dn
Mean putslde diameter dem
(Min)
Mean putslde diameter dem
(Mix)
110110110110.3
125125125125.3
160160160160.4
200200200200.5
250250250250.5
315315315315.6
355355355355.7
400400400400.7
450450450450.8
500500500500.9
630630630631.1

SASO - ISO - 4435 / Table 4 – Wall thicknesses

Nominal size DN/ODNominal out- side diameter dnSN 2 SDR 51SN 2 SDR 51SN 4 SDR 41SN 4 SDR 41SN 8 SDR 34SN 8 SDR 34
e Minm Mixe Minm Mixe Minm Mix
1101103.23.83.23.8
1251253.23.83.74.3
1601603.23.844.64.75.4
2002003.94.55.95.65.96.7
2502504.95.66.27.17.38.3
3153156.27.17.78.79.210.4
-35535577.98.79.810.411.7
4004007.98.99.81111.713.1
-4504508.89.91112.313.214.8
5005009.81112.313.814.616.3

non-preferred sizes are indicated in parentheses.

Table 1 – Diameters and lengths of elastomeric ring seal sockets and spigots.

Nominal sizeª DN/ODNominal outside diameter ªnCocketªsm MinCocket A MinCocket C MaxCocket L₁ MinSpigot Hᵇ
110110110.43226606
125125125.43526676
160160160.54232817
200200200.65040999
250250250.855701259
315315316627013212
-355355356.1667013613
400400401.2708015015
-450450451.4758015517
500500501.5808016018

a Non-preferred sizes are indicated in parentheses.
b Approximate values when a 15° chamfer is applied
c Higher values of C are allowed, provided the manufacturer states in his documentation
the actual value of L₁,min required by the equation:
L₁,min = A_min + C

PVC Electrical Conduits & Tubing according to NEMA TC-2

Applications: EPT Electrical plastic tubing for encasement in concrete, EPC 40 Electrical plastic conduit for direct burial underground, EPC 80 Electrical plastic conduit for heavy duty.

Nominal size inchOutside Diameter (mm)Wall Thickness (mm)Wight kg/m
MinMaxMinMaxMinMaxMinMaxEPTEPC 40
1/1/200121.2421.441.522.032.773.283.734.240.1550.24
3/3/200126.5726.771.522.032.873.383.914.240.1970.33
133.2733.531.522.033.383.894.555.080.250.48
12/31/200342.0342.291.782.293.564.074.855.440.3650.65
12/31/200148.1148.412.032.543.684.195.085.690.470.77
260.1760.472.543.053.914.425.546.20.7171.04
1/31/200272.8473.22.793.35.165.777.017.850.9521.57
388.789.13.183.685.496.157.628.531.312.14
4114.1114.53.814.326.026.738.569.5823.05
5141.05141.556.227.3479.5210.676.42
6168168.567.117.9810.9712.298.13
8218.7219.468.189.1712.714.2212.4

PVC Electrical Conduits & Tubing according to NEMA TC-6 & ASTM F 512

Applications: Type EB for encased burial in concrete, Type DB for direct burial without concrete,