Chitoliro Chachitsulo Chotentha Chotentha
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API 5L Yopanda Msoko Yotentha Yozungulira Chitoliro Chachitsulo
Chitoliro cha APIndi payipi ya mafakitale yomwe imagwirizana ndi American Petroleum Standard (API) ndipo imagwiritsidwa ntchito makamaka ponyamula zinthu zamadzimadzi monga mafuta ndi gasi. Mankhwalawa amapezeka m'mitundu iwiri: chitoliro chopanda msoko ndi chowotcherera. Mapeto a chitoliro amatha kukhala omveka, opangidwa ndi ulusi, kapena okhazikika. Kulumikiza mapaipi kumatheka kudzera pakuwotcherera kumapeto kapena kulumikiza. Ndi kupita patsogolo kwaukadaulo wowotcherera, chitoliro chowotcherera chimakhala ndi phindu lalikulu pakugwiritsa ntchito mita yayikulu ndipo pang'onopang'ono chakhala mtundu waukulu wa chitoliro.