Tankunan bitumen "nau'in dumama na ciki ne na na'urorin ajiyar bitumen na gaggawa". A halin yanzu silsilar ita ce kayan aikin kwalta mafi ci gaba a kasar Sin wanda ke hade da saurin dumama, ceton makamashi da kare muhalli. Kayan aiki mai ɗaukuwa na dumama kai tsaye a cikin samfurin ba wai kawai yana da saurin dumama mai sauri ba, yana adana mai, amma kuma baya ƙazantar da yanayin, kuma yana da sauƙin aiki.

Tsarin preheating mai aiki gaba ɗaya yana kawar da matsalar yin burodi ko tsaftace bitumen da bututun mai. Tsarin kewayawa mai aiki yana ba da damar bitumen ta atomatik shiga cikin injin dumama, mai tara ƙura, daftarin da aka jawo, famfo bitumen, da nunin zafin bitumen kamar yadda ake buƙata.
Ya ƙunshi nunin matakin ruwa, injin injin tururi, tsarin bututun bututu da bitumen famfo preheating tsarin, tsarin rage matsin lamba, tsarin konewar tururi, tsarin tsaftace tanki, da na'urar saukar da mai. Dukkansu an shigar dasu akan jikin tanki (ciki) don samar da tsari mai mahimmanci.
Siffofin tankuna na bitumen sune: saurin dumama, tanadin makamashi, babban adadin samarwa, babu sharar gida, ba tsufa, aiki mai sauƙi, duk kayan haɗi suna cikin jikin tanki, kuma yana da dacewa musamman don motsawa, ɗagawa, da kulawa. Nau'in da aka gyara yana dacewa sosai.