Ibhola ye-junda carbon steel yahlulwe ibe yibhola yentsimbi ephezulu yekhabhoni kunye nebhola yentsimbi ephantsi yekhabhoni iindidi ezimbini, Kuxhomekeke kuhlobo lweebhola zentsimbi zekhabhoni ezisetyenzisiweyo, zinokusetyenziswa kuyo nayiphi na into ukusuka kwii-castor zefenitshala ukuya kwiintsimbi zokuslayida, ukupolisha kunye noomatshini bokusila, iinkqubo zepeening, kunye nezixhobo zokuwelda.
