The ATUL is a Group of ISO 9001-2000 companies and products are certified by BIS (Bureau of Indian Standards) which is the highest symbol of quality products in India.

UNPLASTICISED PVC PIPES (As per IS 4985 :2000)

The wall thickness of pipes os based on a safe working stress of 8.6 Mpa at 27c and the working pressure gets reduced at sustained higher temperatures. Occassional rise in temperature as in summer season with concurrent corresponding reducttion in temperature during nights has no deleterious effect on the life working pressure of the pipe considering the total life of pipes.

For class 1, 2, and 3 of all sized, this requirement need not to be satisfied as the ratio of minimum wall thickness to nominal outside diameter does not exeed 0.35 in these cases.