Huwa magħmul prinċipalment minn kompost minn pajp korrugat, kmiem nett u ġonta. The inner tube is a thin walled stainless stell corrugated pipe with a spiral or annular shape, and the outer layer of the corrugaed pipe is made of stainless steel wire of steel tape. Il-Joings u l-Flanges fiż-żewġt itruf tal-pajp AR imqabbla mal-fittings u l-flanġijiet tal-pajp tal-klijent.