Masiku ano timayambitsa chitoliro chachitsulo chomwe chimagwiritsidwa ntchito kwambiri, chitoliro chamafuta (GB9948-88) ndi choyenera pa chubu cha ng'anjo yamafuta, chotenthetsera kutentha ndi chitoliro chopanda msoko.

Chitoliro chachitsulo cha pobowola geological (YB235-70) chimagwiritsidwa ntchito pobowola pachimake ndi dipatimenti ya geological, yomwe imatha kugawidwa mu chitoliro chobowola, kolala yobowola, chitoliro chapakati, chitoliro cha casing ndi chitoliro cha mpweya malinga ndi ntchito yake.

Chitoliro chamafuta ndi mtundu wachitsulo chachitali chokhala ndi gawo lopanda kanthu ndipo palibe cholumikizira mozungulira, pomwe chitoliro chophwanyidwa chamafuta ndi mtundu wachitsulo chagawo lazachuma.
API: Ndichidule cha The English American Petroleum Institute, kutanthauza Chinese ku American Petroleum Institute.

OCTG: Ndichidule cha Oil Country Tubular Goods, kutanthauza chitoliro chapadera cha Mafuta mu Chitchaina, kuphatikiza chotengera chamafuta omalizidwa, chitoliro chobowola, kolala yobowola, kolala, ndi kulumikizana kwachidule, ndi zina zambiri.

Tubing: Chitoliro chomwe chimagwiritsidwa ntchito popanga mafuta ndi gasi, jekeseni wamadzi, ndi kupasuka kwa asidi m'chitsime.

Bowo lobowola bwino: Chitoliro chimathamanga kuchokera padziko lapansi kupita ku dzenje lobowoledwa bwino ngati kansalu kuti khoma lisagwe.

Bowola chitoliro: chitoliro chomwe chimagwiritsidwa ntchito pobowola.

Chitoliro: chitoliro chomwe chimagwiritsidwa ntchito potengera mafuta ndi gasi.

Kolala: silinda yokhala ndi ulusi wamkati womwe umagwiritsidwa ntchito kulumikiza mapaipi awiri a ulusi.

Zomangira: chitoliro chomwe chimagwiritsidwa ntchito polumikiza.

Ulusi wa API: ulusi wa mapaipi otchulidwa mu API 5B, kuphatikiza ulusi wa mapaipi ozungulira, ulusi wapaipi wozungulira, ulusi wautali wozungulira, ulusi wapaipi wa trapezoidal, ulusi wa mapaipi, ndi zina zotero.

Ulusi wapadera: mtundu wa ulusi wopanda API wokhala ndi kusindikiza kwapadera, kujowina ndi zina.

Kulephera: kutayika kwa ntchito yoyambirira chifukwa cha kupunduka, kusweka ndi kuwonongeka kwapamtunda pansi pamikhalidwe yapadera yautumiki. Mitundu yayikulu ya kulephera kwa casing ndi: extrusion, slip, rupture, leakge, corrosion, bonding, wear and etc.