Raws li qhov tseem ceeb ntawm kev thauj mus los nruab nrab hauv kev lag luam roj thiab roj, API 5L cov raj xa dej, nrog cov qauv nruj thiab muaj zog yoog raws, tau dhau los ua qhov kev xaiv zoo tshaj plaws rau kev tsim hluav taws xob thoob ntiaj teb. API 5L tus qauv tsim los ntawm American Petroleum Institute (API) tau dhau los ua ntau yam kev hloov pauv thiab tau dhau los ua cov txheej txheem tseem ceeb rau cov raj xa dej zoo, ua kom muaj kev nyab xeeb kev thauj mus los hauv ntau yam kev ua haujlwm.
Core Specifications ntawm API 5L Standard:
Kev muab qhab nia thiab ntsuas ntsuas, Precise Adaptation to Requirements
API 5L tus qauv qhia meej meej cov kev cai rau seamless thiab welded steel kav, nrog rau cov tub ntxhais yog kev hloov ntawm cov khoom specification (PSL) thiab qib steel rau cov kev ua haujlwm tshwj xeeb. Lub ntsiab tseem ceeb tam sim no 46th tsab optimizes ntsuas xws li vuam txheej txheem thiab hardness tests, ho txhim khu kev ruaj ntseg thiab applicability ntawm cov khoom.
PSL1 yog qib theem pib, nrog kev tswj xyuas xoob, npog B thiab X42 steel qib, haum rau qis- siab thiab tsis yog -corrosive ib puag ncig; PSL2 yog qib txhim khu kev qha, siv micro-cov cuab yeej siv thev naus laus zis, txhawb cov qib steel siab xws li X70 thiab X80, muaj peev xwm tiv taus siab, corrosion thiab kub kub, haum rau cov xwm txheej tshwj xeeb xws li acidic thiab offshore ib puag ncig. Lub zog tawm los ntawm qib B yog siab dua lossis sib npaug rau 245 MPa, thiab qib X80 yog siab dua lossis sib npaug rau 555 MPa, qhov tseeb sib piv cov kev xav tau sib txawv.
Muaj Ntau Yam Kev Thov Kev Pabcuam: Kev Pabcuam Tshaj Tawm los ntawm Av mus rau Hiav Txwv
Kev vam khom rau nws qhov zoo ntawm kev faib tawm, API 5L cov kav dej kav dej dav dav npog tag nrho cov kev lag luam tsheb thauj mus los thiab tsim nyog rau ntau yam xwm txheej nyuaj.
Hauv kev thauj mus los ntawm av- roj thiab roj, cov kav dej qib PSL1 feem ntau yog siv rau nruab nrab - kub thiab qis - cov kav dej siab hauv North Tuam Tshoj thiab Northwest Tuam Tshoj, nrog rau cov nqi zoo heev - ua tau zoo. Rau cov ntu tseem ceeb ntawm siab - cov haujlwm siab xws li Sab Hnub Poob - mus rau - East Gas Transmission, PSL2 X70/X80 steel qib (muaj peev xwm tiv taus siab tshaj lossis sib npaug li 10 MPa) raug xaiv los xyuas kom meej kev thauj mus los. Nyob rau hauv siab -sulfur gas teb ntawm Sichuan thiab Chongqing, PSL2 cov kav dej uas ua tau raws li NACE cov qauv siv los tiv thaiv H₂S corrosion.
Nws qhov zoo yog qhov tshwj xeeb tshaj plaws nyob rau hauv qhov chaw huab cua: Hauv qhov siab - qhov siab txias thaj tsam ntawm Northeast Tuam Tshoj, PSL2 cov kav dej kav dej (nrog rau kev cuam tshuam ntawm ntau dua lossis sib npaug rau 72J ntawm -40 degree) yog siv los tiv thaiv qis - kub tawg; nyob rau hauv cov risers ntawm Bohai Oilfield, API 5L B qib seamless kav tau txais yuav los tiv thaiv cov dej khov; Hauv kev kho dua tshiab ntawm cov kav dej hauv nroog, nws cov kav dej txias - rub cov kav dej kom ntseeg tau qhov sib xws ntawm cov txheej tiv thaiv corrosion vim lawv qhov zoo tshaj plaws roundness.
Los ntawm cov kav dej ib txwm siv rau cov xwm txheej tsis zoo, API 5L cov raj xa dej tau tsim raws li tus qauv thiab tuaj yeem hloov mus rau ntau qib, dhau los ua cov khoom tseem ceeb rau kev thauj mus los ntawm lub zog thiab ua rau muaj txiaj ntsig zoo thiab kev nyab xeeb ntawm kev lag luam hluav taws xob thoob ntiaj teb.
