APL APOLLO SWR Piping System is a very economical and easy to use product used in the drainage industry. It is ideally used for drainage of soil waste & rain water application in residential, commercial & industrial buildings, conforming to ISI-13592-92 & the fittings conforming to ISI-14735-99. The APL APOLLO Draining System offers a maintenance-free solution for a durable, non-rusting and corrosion-free service life.