V glavnem je sestavljen iz valovitih cevi, neto rokavov in sklepov. 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. Joings in prirobnice na obeh koncih cevi AR so se ujemali z okovjem in prirobnicami kupčeve cevi.