Ọ bụ naanị ihe ejikọtara ọnụ nke mpempe akwụkwọ, aka nri na nkwonkwo. 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. Asụsụ na flanses na abụọ nsọtụ nke hose a machibidoro ya na ngwa ahịa na flanges nke ndị ahịa.