The Mean outside diameter, Outside diameter at any point, Wall thickness shall be as given in Table - 1

Measurements

This test determines the optical characteristics of plastics like transmission of light through the specimen. Star UPVC Pipes resist sunlight passing through the pipe walls do not pass more than 0.2% of the light incident on them.

Opacity Test

Pipes shall not have any detrimental effect on the composition of water flowing through them. This test is carried out to ensure that raw materials used to manufacture the pipe do not contaminate water with toxic substances. Purity of water is tested.

Effect on Water

This test ensures that UPVC pipes are manufactured with dies of correct measurements.

Reversion Test

This test determines the quality of raw materials like PVC Resin and also the proportions of additives used. The density of popes ranges from 1.4 – 1.46.

Density Test

This test ensures that the pipe withstands the internal pressure applied.

Hydrostatic Pressure Test

When tested by this method, pipes shall have a true impact rate of not more than 10%. After keeping the test specimen in deep freezing chamber for about an hour specific weight is dropped from specific height to ensure that the specimen withstands the desired impact.

Resistance to
 External blows

This test ensures pipe’s ability to resist heat.

Vicat Softening Temperature

Sulphated ash content test is an effective test to find out whether the pipe is made using high quality raw materials and whether the quantity of Calcium Carbonate is more than the specified requirement.

Sulphated Ash Content Test