Mochini o sebelisoa haholo ho petroleum, indasteri ea lik'hemik'hale, samente, boiler, kaho ea likepe, sefofane, polokelo ea metsi, litora tsa phetisetso ea matla le mechini le lisebelisoa tse ling.Molao-motheo oa ts'ebetso ke ho potoloha ho kobeha deformation.Bakeng sa rolara e ka holimo e ka fallisetsoa holimo le tlase, kahoo ha ho hlokahale khatiso e eketsehileng kapa thepa, e ka lemoha ho khumama, hammoho le khalemelo ea workpiece.