1. ** Dab tsi yog API 5L sib npaug rau Astm? **
>API 5L tsis muaj ib qho ncaj qha sib npaug astm specification. Nws yog thawj tus qauv rau kab yeeb siv hauv cov roj thiab roj kis. Qhov ze tshaj plaws Astm cov qauv rau cov ntawv thov sib xws (seamless thiab welded carbon steel yeeb nkab) yog ** (hom A106 ** (qib b). Txawm li cas los xij, API 5L muaj cov kev cai tshwj xeeb, tshwj xeeb hais txog kev ua kom weldability rau weldability), feem ntau yuav tsum tau ua rau weldability (feem ntau yuav tsum tau ua rau cov qauv ASTT rau cov qauv ASTTM. API 5L cov qib nyiam B, X42, x52, thiab lwm yam, yog qhov tshwj xeeb rau qhov kev tshwj xeeb.
2. ** Tus l hauv API 5L txhais? **
>Qhov "l" hauv API 5l sawv rau ** "kab" **. Nws tsim cov qauv tshwj xeeb no yog cov qauv rau hlau ** xaim yeeb nkab ** Siv feem ntau hauv cov roj, roj, thiab dej hauv cov raj xa dej.
3. ** Dab tsi yog qhov sib txawv ntawm API 5L thiab ASTM A252? **
>API 5L thiab ASTM A252 pab cov hom phiaj sib txawv. ** API 5L ** Tshwj xeeb cov kev xav tau rau seamless thiab welded steel yeeb nkab siv rau kev xa roj, roj, thiab dej hauv pipeline * kis * cov tshuab. Nws tsom rau cov kev ntsuas siab, weldability, thiab feem ntau ua bacture toughness. ** ASTM A252 ** TSHWJ XEEB YUAV TSUM TAU RAU WELDED STEEL YEES Siv AS * Cov Ntawv Thov Tsim Tsev (piv txwv li cov khw muag vaj tsev, tuav pov tseg, teev abetection). Nws tsom rau cov txheej txheem txheej txheem (tawm los thiab lub zog tensile) thiab qhov tob tob, tsis muaj peev xwm siab los yog tib theem kev tswj hwm weldability / Chemistry tswj raws li API 5L. Lawv tsim los rau cov chaw sib txawv sib txawv.
4. ** Dab tsi yog qhov sib txawv ntawm API 5L Qib B thiab Astm A106? **
>Thaum ob qho tib si API 5L Qib B thiab Astm A106 qib B yog cov yeeb nkab roj carbon hlau, lawv sib txawv hauv cov ntsiab lus tseem ceeb:
* ** Daim ntawv thov: ** API 5L GR yog feem ntau rau kev xa hluav taws * kis * ntawm cov roj, roj, thiab dej. ASTM A106 GR yog rau seamless yeeb siv nyob rau hauv * txheej txheem piping * thiab siab-kub / siab zog fais fab cog (boilers, superheaters).
* ** TASE: ** ASTM A106 GR B tau sau cov tensile tsawg kawg / tawm los ntawm kev nce qib kub (ntev txog 750℃f / 400 degree
* ** Kev ntsuas tshuaj: ** Thaum zoo sib xws, cov tshuaj lom neeg muaj pes tsawg leeg, yog cov pa roj carbon, thiab txwv rau cov ntsiab lus xws li CU, NI, CR, MO, V) sib txawv ntawm ob qho kev qhia tshwj xeeb. API 5L gr feem ntau muaj kev tswj cov pa roj teeb hluav taws xob (CE) rau Weldability hauv Pipelines.
* ** YUAV TSUM TAU TXAIS KEV YUAV TSUM TAU: ** APAI 5L suav nrog Pipelines (piv txwv li, Annex H rau Sour Service). ASTM A106 suav nrog cov kev xav tau ntxiv rau cov kev pab kub siab.
* ** Hloov pauv: ** Lawv yog * tsis yog hloov ncaj qha yam tsis muaj kev ua tib zoo saib xyuas cov haujlwm tshwj xeeb (kev kub siab, ib puag ncig zoo li kev pab cuam).
5. ** Dab tsi yog qhov ntev kev zam rau API 5L yeeb nkab? **
>Tus txheej txheem ntev ntev rau API 5L yeeb nkab nkag hauv * random ntev * yog ** +300 mm ** ({} nti / -0 nti). Yog tias cov yeeb nkab raug xaj rau ib qho ntev ntev *, kev thev naus laus zis * {{mm ** ({[} nti / -0 nti). Qhov kev npaj siab zoo tso cai rau kev npaj kawg ua ntej vuam siv thaum lub sij hawm pipeline, thaum lub xoom tsis tsim nyog ntev tau ntev. Kev ntsuas nruj yuav tuaj yeem sib ceg ntawm cov yuav khoom thiab cov chaw tsim khoom.
