API 5lNdi muyeso wa chitoliro chachitsulo chomwe chimagwiritsidwa ntchito kunyamula mafuta, mpweya wachilengedwe, ndi madzi. Mkhalidwe wofananawo umakhudza masamba angapo a chitsulo, omwe X42 ndi X52 ndi awiri wamba. Kusiyanitsa kwakukulu pakati pa X42 ndi X52 ndi mphamvu zawo, makamaka kukhala ndi mphamvu yayikulu komanso kukhala ndi chidwi.

X42: Mphamvu Yochepera Yoyamba ya X42 SPI (270 SPI (290 SPA), ndi mphamvu zake zamphamvu kuchokera ku 60,000-75,000 ppa (415-520 MPA). Chitoliro cha X42 chimagwiritsidwa ntchito munthawi zambiri pamapaipi okhala ndi kupanikizika kwapakatikati ndi zofunikira zopangira matchulidwe monga mafuta, mpweya wachilengedwe monga mafuta, ndi madzi.

X52: Mphamvu Yochepera ya X52 yachitsulo ndi 52,000 ppi (360 MPA), ndipo mphamvu yayikulu imachokera ku 66,000-95,000 (455-65,000). Poyerekeza ndi X42, X52 chitoliro chachitsulo chimakhala ndi mphamvu zambiri ndipo ndizoyenera ma picheline omwe ali ndi zovuta zambiri komanso zofunikira.

Malinga ndi momwe amaperekera,API 5l Standardimafotokoza mafayilo osiyanasiyana obwera pazithunzithunzi zosawoneka zachitsulo ndi mapaipi otchetcha:

Piamly Pipe (N State): N Gona limatanthauzanso madongosolo a mankhwalawa. Mapaipi achitsulo osawoneka bwino asanabadwe kuti abweretse micretenize microgence pa chitoliro cha zipilala, potero ndikuwongolera mphamvu zake zamakina ndi mphamvu yake. Kusintha kumatha kuthetsa nkhawa zotsalira ndikusintha kukula kwa chitoliro chachitsulo.

Chitoliro chotchetcha (m State): M State State amatanthauza ku thermeovechanical chithandizo cha chitoliro chotentha mutapanga ndikuwotcha. Kudzera mu marming cacci chithandizo, micrestruction ya chitoliro chowotchera chimakonzedwa, magwiridwe antchito owotcherawo amasinthidwa, komanso mphamvu ndi kudalirika kwa chitoliro chogwiritsira ntchito chikukwaniritsidwa.

API 5l StandardImafotokoza mwatsatanetsatane kapangidwe ka mankhwala, makina opanga, njira zopangira, kuyeserera ndi kuyesa mayeso pamapaipi achitsulo. Kukhazikitsa kwa muyezowo kumatsimikizira chitetezo komanso kudalirika kwa mapaipi achitsulo atanyamula mafuta, mpweya wachilengedwe ndi madzi ena. Kusankhidwa kwamapaipi oyenera ndi mawonekedwe operekera kumatha kukwaniritsa zosowa zapadera za mapulojekiti osiyanasiyana ndikuwonetsetsa kuti agwiritse ntchito dongosolo la mapaipi.