Pipes are manufactured in Copper Tube size [CTS] from ½ “to 2” with two different standard dimensional ratios SDR-11 and SDR-13.5 are made from CPVC compound. Pipe & fittings are produced as per SDR-11 meet the requirement of ASTM D 2846 where as the pipes with SDR-13.5 meet the requirement derived from ASTM F 442, specific to CPVC in Iron Pipe Size (IPS) dimension, which can also be applied to CPVC pipes in CTS dimension. Apart from having the same physical properties, SDR-11 and SDR-13.5 have different wall thickness and therefore, at any given temperature, have different pressure rating.

Pipes are manufactured in Copper Tube size [CTS] from ½ “to 2” with two different standard dimensional ratios SDR-11 and SDR-13.5 are made from CPVC compound. Pipe & fittings are produced as per SDR-11 meet the requirement of ASTM D 2846 where as the pipes with SDR-13.5 meet the requirement derived from ASTM F 442, specific to CPVC in Iron Pipe Size (IPS) dimension, which can also be applied to CPVC pipes in CTS dimension. Apart from having the same physical properties, SDR-11 and SDR-13.5 have different wall thickness and therefore, at any given temperature, have different pressure rating.