Haamaha bitumen waa "nooca kuleyliyaha gudaha aaladaha kaydinta bitumen degdeg ah". Taxanuhu hadda waa qalabka ugu horumarsan ee daamurka ee Shiinaha kaas oo isku dara kuleylka degdega ah, badbaadinta tamarta iyo ilaalinta deegaanka. Kuleyliyaha tooska ah ee qalabka la qaadi karo ee alaabta ma aha oo kaliya inuu leeyahay xawaaraha kuleylka degdega ah, wuxuu kaydiyaa shidaalka, laakiin sidoo kale ma wasakheeyo deegaanka, waana sahlan tahay in la shaqeeyo.

Nidaamka kuleylka firfircoon ee firfircoon wuxuu si buuxda u baabi'iyaa dhibaatada dubista ama nadiifinta bitumen iyo dhuumaha. Habka wareegga firfircooni wuxuu u oggolaanayaa in bitumen ay si toos ah u gasho kuleyliyaha, boodhka ururiyaha, marawaxada la kiciyay, bamka bitumen, iyo muujinta heerkulka bitumen haddii loo baahdo.
Waxay ka kooban tahay muraayadda heerka biyaha, koronto dhaliyaha uumiga, dhuumaha iyo nidaamka bamka bitumen preheating system, habka cadaadiska cadaadiska, habka gubashada uumiga, habka nadiifinta haanta, iyo qalabka haanta dejinta saliidda. Dhammaantood waxay ku rakiban yihiin jirka taangiga (gudaha) si ay u sameeyaan qaab dhismeed isku dhafan.
Tilmaamaha taangiyada bitumen waa: kuleyl degdeg ah, badbaadinta tamarta, mugga wax soo saarka ee weyn, qashin la'aan, da' la'aan, hawl fudud, dhammaan qalabyada ayaa ku jira jirka taangiga, waxayna si gaar ah ugu habboon tahay in la dhaqaajiyo, kor loo qaado, lana ilaaliyo. Nooca go'an waa mid aad u habboon.