API 7-1 Izunguruka kandi Idazunguruka Icupa Ricukura
Iki gikoresho ni cyiza cyane mu gukuraho umwanda ushobora gusigara ku nkuta z'imbere z'igisanduku, nka sima ikomeye, ishashi ikomeye, umunyu cyangwa ibisigazwa bitandukanye, uduce dutoboye, ibisigazwa bya oxide y'icyuma bikomoka ku ngese, kugira ngo ibikoresho byose byo hasi binyure mu mwobo udafunze. Cyane cyane iyo hari ahantu hato hazengurutse hagati y'ibikoresho byo hasi n'igisanduku kiri imbere, gusiba byose biba ngombwa mbere yo gukomeza gukora. Muri iki gihe, gusiba mu iriba rinini rya peteroli mu rukuta rw'imbere rw'igisanduku hakoreshejwe imashini isya ni intambwe ikenewe.