API 6A Wellhead manifold Duba bawuloli
An tsara kuma an samar da bawul ɗin duba gaba ɗaya bisa ga buƙatun API 6A 《Bayanan Kayan Aiki don Wellhead da Bishiyar Kirsimeti》, ana iya amfani da shi tare da kayan aiki masu alaƙa a gida da waje waɗanda suka yi daidai da Ma'aunin API 6A. Jikin yana ɗaukar ƙarfe mai juriya ga sulfide kuma ana iya amfani da shi a yanayin H2S, jikin bawul ɗin da aka yi da ƙarfe mai ƙarfe mai ƙarfe mai kyau tare da kyakkyawan aiki. Ana bayar da nau'ikan bawul ɗin Duba guda biyu ta hanyar landrill: Nau'in juyawa da nau'in ɗagawa.