API American Petroleum Institute ọkọlọtọ –API (American Petroleum Institute) ndebiri.Ewubere API na 1919, bụ otu n'ime ụlọ ọrụ azụmaahịa mba US mbụ, bụkwa otu n'ime ndị izizi na nke ọma na-emepe emepe ụkpụrụ azụmaahịa zuru ụwa ọnụ.

API Monogram Forensics Ngwaahịa Katalọgụ

API Spec 1B eriri triangle oilfield – eriri triangle

API Spec 2B structural ígwè ọkpọkọ – ígwè ọkpọkọ

API Spec 2C Offshore krane – igwe na-akụda ọdụ ụgbọ mmiri dị larịị

Yinye API Spec 2F – yinye ịgbado ọkụ butt

API Spec 2H Offshore carbon manganese ígwè ọkpọkọ ọkpọkọ –42 ọkwa ígwè efere, 50 ígwè ọkwa ígwè efere.

API Spec 2MT1 ihe owuwu dị n'ụsọ osimiri tụgharịrị carbon steel iji kwalite ịdị ike - efere ígwè manganese ọkwa 2MT1

API Spec 2W dịpụrụ adịpụ structural ígwè efere site thermal akara usoro (TMCP) mmepụta nke

Arụmọrụ dị n'ụsọ mmiri nke API Spec 2Y agbanyụchara yana efere igwe nwere ọkụ

API Spec 4F mkpọpu ma rụọ ọrụ n'elu derrick

API Spec 5B casing, tubing na line pipe thread nhazi, nha na nyocha

API Spec 5CT casing na tubing

API Spec 5D egwu

API Spec 5L eriri eriri

API Spec 5LC CRA ( alloys na-eguzogide corrosion).

API Spec 5LCP pipeline na-aga n'ihu

API Spec 5LD kpuchie na alloy na-eguzogide corrosion ma ọ bụ ọkpọkọ nchara

API Spec 6A akụrụngwa isi olulu mmiri na osisi na-achịkọta mmanụ

API Spec 6AV1 arụ ọrụ ala yana ule nkwenye nchekwa valvụ dị n'okpuru mmiri n'oké osimiri

API Spec 6D pipeline valves (valvụ ọnụ ụzọ, valvụ plọg, valvụ bọọlụ na valvụ nlele)

API Spec 6H tube ngwụcha plọg, njikọ ọkpọkọ na ihe jikọrọ ọnụ

API Spec 7 akụrụngwa ọkpọkọ na-atụgharị

Nkọwapụta API Spec 7B-11C nwere injin mgba ọkụ dị n'ime na-emegharị maka ubi mmanụ

API Spec 7C-11F rụnye igwe mgba ọkụ dị n'ime, omume mmezi akwadoro

API Spec 7F olulu mmiri nwere yinye na sprocket

Ngwá ọrụ mkpọpu 7K API Spec

API Spec 8A Drilling and Production Hoisting

API Spec 8C Drilling and Production Hoisting (PSL1 na PSL2)

API Spec 9A eriri igwe

API Spec 10A nke ọma ciment

API Spec 10D ụta mmiri casing centralizers

API Spec 11AX mkpanaka mgbapụta na ngwa

API Spec 11B mkpanaka sucker

Ngalaba mgbapụta API Spec 11E

Ngwa Wellhead nwere onwe API Spec 11IW

API Spec 11L6 igwe mgbapụta ọkụ eletrik nke ihe na-ebu ọkụ

Ngwa API Spec 11N nke m na-achọpụta mmanụ akpaka

API Spec 11V1 gas ebuli valvụ, orifice, valvụ nloghachi na valvụ na-edozi ahụ

API Spec 12B tankị nchekwa gbachiri

API Spec 12D mmanụ ịgbado ọkụ tankị

API Spec 12F ụlọ nrụpụta tankị agbadoro

Ngwa API Spec 12GDU glycol eke ikuku ikuku

API Spec 12J mmanụ na gas separator

API Spec 12K kpo oku mmanụ na-apụtaghị ìhè

API Spec 12L vetikal na kwụpụ na mmiri ara ehi

API Spec 12P enyo eriri eriri plastik gbasiri ike

API Spec 13A ihe mkpọpu mmiri

Nkọwa ngwaọrụ valvụ dị n'okpuru API Spec 14A

API Spec 15HR Nrụgide Fiberglass Line Pipe

Pipeline API Spec 15LE polyethylene (PE).

API Spec 15LR pipeline fiberglass nrụgide dị ala

API Spec 16A na-egwupụta ihe site na akụrụngwa

API Spec 16C ichekwa okporo ụzọ yana nkọwapụta nke ọma

API Spec 16D sistemu njikwa akụrụngwa njikwa ọma

API Spec 16R ogbugba mmiri mmiri riser nkwonkwo

API Spec 17D isi olulu mmiri na akụrụngwa na-achịkọta mmanụ

API Spec 17E ahịrị njikwa mmepụta oke osimiri

API Spec 17J jikọtara ọkpọkọ na-agbanwe agbanwe

API Spec 17K ọkpọkọ na-agbanwe agbanwe