National Plastic produces a range of PVC-U pipes strictly in accordance with ISO standards on dimensions, materials and workmanship. The pipe is manufactured from virgin, unplasticized polyvinyl chloride compound (PVC-U).

The pipe is produced in a range of nominal pressure (PN) at 20°C. The appropriate derating factors should be applied for working pressures when subjected to higher temperatures. The nominal outside diameters and nominal wall tickness are based on an overall service (design) coefficient C=2 as follows:-

S 20 SRD 41 PN 6.3 Outside Diameter MM Wall Thickness MM 63 1.6 75 1.9 90 2.2 110 2.7 160 4.0 200 4.9 225 5.5 250 6.2 280 6.9 315 7.7 400 9.8

S 12.5 SRD 26 PN 10 Outside Diameter MM Wall Thickness MM 40 1.6 50 2.0 63 2.5 75 2.9 90 3.5 110 4.2 160 6.2 200 7.7 225 8.6 250 9.6 280 10.7 315 12.1 400 15.3

S 8 SRD 17 PN 16 Outside Diameter MM Wall Thickness MM 20 1.4 25 1.5 32 1.9 40 2.4 50 3.0 63 3.8 75 4.5 90 5.4 110 6.6 160 9.5 200 11.9 225 13.4 250 14.8 280 16.6 315 18.7

All users should refer to the original ISO standards for reference. Depending on the application, other standards may apply. National Plastic reserves the right to change any information contained in this web site without prior notice.

S = Pipe Series
PN = Nominal Pressure
SDR = Standard Dimension Ratio