API cevplays lub luag haujlwm tseem ceeb hauv kev tsim kho thiab kev ua haujlwm ntawm lub zog kev lag luam xws li roj thiab roj. Lub koom haum American Petroleum (API) tau tsim cov qauv nruj nruj uas tswj txhua yam ntawm API yeeb nkab, los ntawm kev tsim khoom mus rau daim ntawv thov, kom ntseeg tau tias nws zoo thiab kev nyab xeeb.

Ib pawg ntawm API 5L steel kav tau muab tso ua ke kom zoo, nrog rau cov qauv khoom tshwj xeeb uas cim rau ntawm cov kav dej, ua cim zoo thiab kev ntseeg siab.

API 5L TubeNtawv pov thawj Standards

API steel yeeb nkab ntawv pov thawj xyuas kom meej tias cov tuam txhab tsim cov khoom lag luam ua raws li API cov lus qhia. Yuav kom tau txais API monogram, tuam txhab lag luam yuav tsum ua kom tau raws li ntau qhov kev xav tau. Ua ntej, lawv yuav tsum muaj kev tswj xyuas zoo uas tau ua haujlwm ruaj khov rau tsawg kawg plaub lub hlis thiab ua raws li API Specification Q1. API Specification Q1, raws li kev lag luam tus qauv kev tswj hwm zoo, tsis yog tsuas yog ua tau raws li ISO 9001 cov kev cai feem ntau, tab sis kuj suav nrog cov kev cai tshwj xeeb raws li cov kev xav tau tshwj xeeb ntawm kev lag luam roj thiab roj. Qhov thib ob, cov tuam txhab yuav tsum tau hais meej thiab meej piav qhia lawv cov kev tswj hwm zoo hauv lawv phau ntawv zoo, suav nrog txhua qhov yuav tsum tau ua ntawm API Specification Q1. Tsis tas li ntawd, cov tuam txhab yuav tsum muaj peev xwm tsim nyog los xyuas kom meej tias lawv tuaj yeem tsim cov khoom lag luam uas ua raws li API cov khoom specifications. Tsis tas li ntawd, cov tuam txhab yuav tsum tsis tu ncua kev soj ntsuam sab hauv thiab kev tswj hwm raws li API Specification Q1, thiab tuav cov ntaub ntawv ntxaws ntxaws ntawm cov txheej txheem tshawb xyuas thiab cov txiaj ntsig. Hais txog cov khoom tshwj xeeb, cov neeg thov yuav tsum tuav tsawg kawg ib daim qauv ntawm cov lus Askiv tshiab kawg ntawm API Q1 specification thiab API cov khoom specifications rau daim ntawv tso cai lawv thov. Cov khoom specifications yuav tsum tau luam tawm los ntawm API thiab muaj nyob rau hauv API los yog ib tug tso cai distributor. Kev txhais tsis tau tso cai ntawm API cov ntawv luam tawm yam tsis muaj API daim ntawv tso cai ua txhaum cai.

Cov khoom siv rau API Steel Pipe

Peb cov khoom siv dav siv hauv API yeeb nkab yog A53, A106, thiab X42 (ib qib steel zoo hauv API 5L tus qauv). Lawv txawv heev nyob rau hauv tshuaj muaj pes tsawg leeg, mechanical zog, thiab daim ntawv thov scenarios, raws li qhia nyob rau hauv cov lus hauv qab no:

Hom khoom	Cov qauv	Chemical Composition Yam ntxwv	Mechanical Properties (Tsev muaj nuj nqis)	Cov cheeb tsam tseem ceeb ntawm daim ntawv thov
A53 steel yeeb nkab	ASTM A53	Cov pa roj carbon steel muab faib ua ob qib, A thiab B. Qib A muaj cov ntsiab lus carbon ntawm ≤0.25% thiab manganese cov ntsiab lus ntawm 0.30-0.60%; Qib B muaj cov ntsiab lus carbon ntawm ≤0.30% thiab manganese cov ntsiab lus ntawm 0.60-1.05%. Nws tsis muaj alloying ntsiab.	Yield zog: Qib A ≥250 MPa, Qib B ≥290 MPa; Tensile zog: Qib A ≥415 MPa, Qib B ≥485 MPa	Kev thauj mus los ntawm cov dej tsis tshua muaj siab (xws li dej thiab roj) thiab cov kav dej dav dav, tsim nyog rau qhov chaw tsis muaj corrosive.
A106 steel yeeb nkab	ASTM A106 1	High-temperature carbon steel muab faib ua peb qib, A, B, thiab C. Cov pa roj carbon ntsiab lus nce qib (Qib A ≤0.27%, Qib C ≤0.35%). Cov ntsiab lus ntawm manganese yog 0.29-1.06%, thiab cov ntsiab lus sulfur thiab phosphorus yog tswj nruj dua.	Yield zog: Qib A ≥240 MPa, Qib B ≥275 MPa, Qib C ≥310 MPa; Tensile zog: Tag nrho ≥415 MPa	High-temperature thiab high-pressure steam pipelines thiab roj refinery pipelines, uas yuav tsum tiv taus kub kub (feem ntau ≤ 425 ° C).
X42 (API 5L)	API 5L (Line Pipeline Steel Qauv)	Tsawg-alloy, high-strength steel muaj cov ntsiab lus carbon ntawm ≤0.26% thiab muaj cov ntsiab lus xws li manganese thiab silicon. Microalloying cov ntsiab lus xws li niobium thiab vanadium qee zaum ntxiv los txhim kho lub zog thiab tawv.	Tawm Zog ≥290 MPa; Tensile zog 415-565 MPa; Impact Toughness (-10 ° C) ≥40 J	Cov kav dej ntev ntev thiab cov roj nkev, tshwj xeeb tshaj yog cov uas muaj kev kub ntxhov, kev thauj mus los ntev, tuaj yeem tiv taus cov cheeb tsam nyuaj xws li av kev ntxhov siab thiab qhov kub thiab txias.

Lus Cim Ntxiv:
A53 thiab A106 yog cov txheej txheem ASTM. Lub qub tsom rau kev siv dav dav hauv chav tsev kub, thaum lub sijhawm tom kawg qhia txog kev ua haujlwm kub.
X42, uas belongs rau lubAPI 5L steel yeeb nkabtus qauv, yog tsim tshwj xeeb rau kev thauj mus los roj thiab roj, hais txog qhov kub thiab txias toughness thiab qaug zog tsis kam. Nws yog cov khoom siv tseem ceeb rau cov kav dej ntev.

Kev xaiv yuav tsum yog raws li kev ntsuam xyuas dav dav ntawm lub siab, qhov kub thiab txias, nruab nrab corrosiveness, thiab qhov project ib puag ncig. Piv txwv li, X42 yog qhov zoo dua rau kev thauj mus los ntawm cov roj thiab roj, thaum A106 nyiam rau cov cua kub siab.