1. API 6D yog dab tsi?
API Specification 6D - "Specification for Pipeline and Piping Valves" - yog luam tawm los ntawm American Petroleum Institute thiab tau ua raws li cov txheej txheem thoob ntiaj teb ISO 14313. Nws tsim cov kev cai rau kev tsim, tsim khoom, tshuaj xyuas, kuaj, thiab kos npe ntawm cov li qub siv hauv cov roj thiab cov kav dej. thiab piping systems. Hauv kev xyaum, "API 6D li qub" txhais tau hais tias lub rooj vag, pob, ntsaws thiab kos cov khoom siv rau kev sib kis thiab kev pabcuam, feem ntau yog flanged lossis taub qab - vuam xaus.
2. Scope: Yam Valves thiab Kev Pabcuam twg?
API 6D siv rau flanged, taub qab- vuam thiab lwm yam kawg- txuas li qub hauv qhov ntau thiab tsawg los ntawm DN50 (2 hauv) thiab loj dua, hauv cov chav kawm siab feem ntau ntawm Chav Kawm 150 txog Chav Kawm 2500. Nws npog:
Rooj vag li qub- nce thiab tsis yog- nce qia, rau kev cais tawm hauv cov kav dej.
Pob li qub- ntab los yog trunnion-mounted, tag nrho- tho los yog txo- bore, feem ntau nrog ob chav thaiv thiab los ntshav (DBB) muaj peev xwm.
Plug li qub- lubricated thiab tsis yog -lubricated tsim.
Kuaj li qub- viav vias, qaij-disc thiab dual- phaj tsim rau kev tiv thaiv rov qab.
API 6D kuj txhais qhov kawg- rau- qhov kawg qhov ntev rau cov hom valve npog, ua kom tiav cov kev xav tau dav dav ntawm ASME B16.10.
3. Cov Lus Qhia Tseem Ceeb
Tsim:cov ncauj lus kom ntxaws txog kev sib koom ua ke ntawm lub cev / lub kaus mom, tuav tuav (tiv thaiv -}), sealing qauv, thiab kab noj hniav nyem qhov twg siv tau.
Khoom siv:lub cev thiab trims yuav tsum ua tau raws li cov qauv khoom siv (piv txwv li, ASTM A216 WCB, A352 LCB / LCC rau qhov kub thiab txias, A351 CF8M, A995 duplex qib). Rau kev pabcuam qaub (H₂S), cov ntaub ntawv yuav tsum tau ua raws li NACE MR0175 / ISO 15156, uas tswj hardness thiab microstructure - feem ntau sau los ntawm cov neeg yuav khoom raws li "kev pabcuam qaub".
Kev tshuaj xyuas thiab kuaj:txhua lub valve yog siab-kuaj - lub plhaub kuaj thiab kuaj lub rooj zaum - raws li API 598, nrog kev lees paub los ntawm ISO 5208 tus nqi. Tsis yog-kev kuaj xyuas kev puas tsuaj, kev sim hydrostatic thiab, qhov twg tau teev tseg, kev ntsuas hluav taws rau API 6FA yog ib feem ntawm txoj kev npaj zoo.
Marking thiab cov ntaub ntawv:Kev kos npe mus tas li ntawm qhov loj me, chav kawm, cov khoom siv, cov qauv thiab cov khoom siv hluav taws xob / batch traceability, nrog rau cov ntawv pov thawj tshuaj xyuas thiab cov ntawv xeem.
4. API 6D vs Lwm Valve Standards
| Txuj | Scope | Cov kev pabcuam |
|---|---|---|
| API 6D (ISO 14313) | Pipeline li qub: rooj vag, pob, ntsaws, kos | Roj & roj pipelines, kis tau tus mob, DBB cais |
| API 608 | Hlau - zaum pob li qub, flanged/BW kawg | Refinery thiab kev pabcuam |
| API 599 Cov | Hlau ntsaws li qub | Kev cais tawm |
| ASME B16.34 | General steel li qub, siab- ntsuas kub | General industrial piping |
| TS EN ISO 7121 | Steel pob li qub, lub hom phiaj dav dav | Industrial soft- rooj zaum pob li qub |
API 6D tsis yog hloov pauv rau ASME B16.34 - B16.34 muab lub siab- qhov ntsuas kub thiab lub hnab ntawv tsim qauv, thaum API 6D ntxiv cov raj xa dej- tshwj xeeb rau kev sim, cov ntaub ntawv thiab kev ua haujlwm.
5. Yuav Qhia Li Cas API 6D Valves hauv Koj RFQ
Lub xeev loj, chav kawm siab thiab qhov kawg kev sib txuas (xws li, DN300, Chav Kawm 600, flanged RF).
Txhais hom valve ( rooj vag / pob / ntsaws / kuaj), bore (tag nrho lossis txo), thiab tus neeg teb xov tooj (qib, iav, actuator).
Qhia meej txog kev pabcuam xov xwm thiab txhua yam qaub-kev pabcuam (NACE MR0175 / ISO 15156).
Ntxiv cov cai tshwj xeeb: DBB, hluav taws kub- nyab xeeb (API 6FA), qis- kub (xws li, A352 LCB/LCC), kab noj hniav nyem.
Thov cov ntaub ntawv xeem (API 598 xeem, plhaub / rooj), cov ntaub ntawv pov thawj thiab daim ntawv pov thawj hluav taws kub.
Cov lus nug nquag
Puas yog API 6D tib yam li ISO 14313?Lawv tau ua raws li cov txheej txheem: API 6D yog American Petroleum Institute tshaj tawm thiab ISO 14313 yog tus qauv thoob ntiaj teb sib xws, nrog ze - cov ntsiab lus zoo tib yam. Cov neeg muag khoom tuaj yeem lees paub rau ob qho tib si, tab sis cov neeg yuav khoom feem ntau qhia "API 6D".
Dab tsi li qub tau them los ntawm API 6D?Lub rooj vag, pob, ntsaws thiab kos li qub rau cov kav dej thiab cov kav dej, los ntawm DN50 (2 hauv) thiab siab dua, feem ntau flanged lossis taub qab - vuam kawg, Chav Kawm 150–2500.
Dab tsi yuav tsum tau kuaj rau API 6D li qub?Ntau lawm li qub tau txais lub plhaub thiab lub rooj zaum ntsuas kev ntsuas raws li API 598 (kev lees paub los ntawm ISO 5208), ntxiv rau cov khoom siv thiab qhov ntsuas qhov ntev. Kev xaiv yuav tsum muaj xws li NDE, ntsuas hydrostatic thiab ntsuas hluav taws ib API 6FA.
Dab tsi yog DBB (ob chav thaiv thiab los ntshav)?valve nrog DBB muaj peev xwm muab ob txoj kev sib khi ntawm txoj kab thiab qhov chaw nres nkoj los ntshav, tso cai rau cov kab noj hniav ntawm cov ntsaws ruaj ruaj rau vented kom paub meej tias kev sib cais. Nws yog tus qauv kev xaiv rau API 6D trunnion pob li qub.
API 6D li qub puas yuav tsum tau ua raws NACE?Tsuas yog thaum qhov kev pabcuam muaj H₂S. Hauv qhov no, cov ntaub ntawv yuav tsum ua raws li NACE MR0175 / ISO 15156 - feem ntau hu ua "kev pabcuam qaub" lossis "NACE trim" - thiab qhov no yuav tsum tau teev nyob rau hauv cov lus qhia tshwj xeeb.
Qhov txawv ntawm API 6D thiab API 608 yog dab tsi?API 6D npog cov raj xa dej (lub rooj vag, pob, ntsaws, kos) nrog cov kav xa dej -kev ntsuas tshwj xeeb thiab DBB kev ua haujlwm; API 608 npog cov hlau- rooj zaum pob li qub rau kev ua kom zoo thiab cov txheej txheem kev pabcuam. Xaiv los ntawm qhov kev pabcuam thiab qhov project specification.