... ISO9001, ISO14001, OHSAS18001, Bureau Veritas · Applications: Cold or hot water supply, heating system including flooring heating, wall heating ... costs by as much as 50% over metal piping system· Higher Flow Capacity: smooth interior walls result ... ISO9001, ISO14001, OHSAS18001, Bureau Veritas · Applications: Cold or hot water supply, heating system including flooring heating, wall heating ...