Answer
Ibyuma bya karubone (SAE 1070) bikorerwa 'Inzibacyuho-Kuri-Gucika intege' (DBT) ku bushyuhe buke. Munsi yubushyuhe bwinzibacyuho, ubukana bwibintu bigabanuka cyane, kandi ntibishobora guhinduka muburyo bwa plastike kugirango bigabanye imihangayiko. Mubikorwa bya peteroli na gaze mumazi (bishobora kugera hafi-gukonja cyangwa no munsi mubihe bya Arctique), umutwaro uwo ariwo wose ushobora gutera impeta kumeneka. Ba injeniyeri bagabanya ibi bakoresheje ibyuma bya austenitis bitagira umuyonga (300 serie) cyangwa nikel alloys (Inconel), bitagaragaza DBT kandi bikomeza kuba ingorabahizi ndetse no guhindagurika nubwo haba hari ubushyuhe bwa kirogenike.