Kuyaziwa ngokubanzi ukuba omabini amadlala entambo angaqhumayo kunye neebhokisi zokudityaniswa zenziwe ngentsimbi engatyiwayo yokuwelda okanye ialluminiyam ialloy die-casting., kwaye babelana ngenqanaba elifanayo lokulinganisa ubungqina bokudubula. Ezi zisetyenziswa ikakhulu kumashishini aqhelene nomlilo kunye neengozi zokudubula, njengekhemikhali, yokugcina kunye nokuthutha, amayeza, emkhosini, kunye namacandelo epetroleum. Nangona kunjalo, abaninzi banokungawuqondi ngokupheleleyo umahluko phakathi kwamadlala entambo angaqhumayo kunye neebhokisi zokuhlangana. Makhe ndicacise iiyantlukwano zabo.
Umahluko ophambili ulele ekusetyenzisweni kwawo ngokwahlukeneyo kunye nomda wokusebenza. Amadlala entambo angaqhumi asetyenziswa xa ubude bocingo bude kakhulu, ukwenza kubenzima ukuthunga kwi-conduit, okanye xa i-wiring ine-bends ezininzi kunye nokwahlukana. Bancedisa ekuququzeleleni ukudityaniswa kwezi ndlela zocingo ezintsonkothileyo.
Kwelinye icala, iibhokisi zesiphambuka ezinobungqina bokudubula zisebenza injongo eyahlukileyo. Zisetyenziswa apho uxhulumaniso lweingcingo zangaphandle, ukuhanjiswa, okanye izixhobo zombane zifuna izindlu ezikhuselayo. Ezi bhokisi zesiphambuka zidla ngokuza neetheminali zokuqhagamshela kwaye zihlala ziqhawuka ukuze zisetyenziswe ngokulula..