1. Q: Dab tsi yog qhov txawv ntawm ASTM A106 Gr. B thiab ASTM A53 Gr. B cev?
A:Ob qho tib si yog cov qib sib txawv rau kev pabcuam siab, tab sisA106yog aseamlessyeeb nkab specification rau siab -kev pab kub (xws li, siab tshaj 538℃/ 1000℃F tsis pom zoo).A53yog specification rau ob qho tib siSeamless (Hom S)thiabwelded (Hom E & Hom F)yeeb nkab, feem ntau yog siv rau kev siv hluav taws xob qis thiab siab. A106 gr. B muaj cov tshuaj sib txawv me ntsis thiab qhov yuav tsum tau kuaj tensile, ua rau nws muaj zog dua rau qhov tseem ceeb siab -kub siv.
2. Q: Thaum twg kuv yuav tsum qhia ASTM A500 Qib C hloov A53 rau kev siv cov qauv?
A: A500 Qib Cyog atxias- ua weldedstructural tube nrog lub zog siab dua - rau- qhov hnyav piv, tsim rau txhua kab, kab teeb, thiab cov tswv cuab hauv kev tsim kho.A53yog lub siab lub cev. Rau cov qauv kev txhawb nqa dawb huv qhov twg lub siab sab hauv tsis yog qhov tseem ceeb, A500 Qib C yog qhov kev lag luam ntau dua thiab hnyav dua -nrawm vim nws lub zog muaj zog ntau dua (50 ksi min vs . 35 ksi rau A53 Gr. B).
3. Q: Peb tab tom pom kev ua tsis tiav ntxov hauv peb A106 Gr. B chav kab vim corrosion. Peb cov kev xaiv yog dab tsi?
A:Cov pa roj carbon steel muaj qhov cuam tshuam rau corrosion. Cov kev xaiv muaj xws li:
Upgrading Khoom siv:Hloov mus rau qis- alloy steel nyiamASTM A335 P11, uas muaj chromium thiab molybdenum kom zoo dua oxidation thiab corrosion kuj ntawm kub kub.
Sab hauv / Cladding:Siv cov pa roj carbon steel yeeb nkab nrog corrosion-resistant alloy (CRA) cladding los yog tiv thaiv sab hauv liner.
Txhim kho dej Chemistry:Rau chav tshuab, feem ntau qhov teeb meem yog oxygen pitting lossis CO2 corrosion, uas tuaj yeem txo tau nrog kev kho dej kom zoo thiab deaeration.
4. Q: Vim li cas tom qab -weld heat treatment (PWHT) feem ntau xav tau rau ASTM A333 Qib 6 kav?
A: ASTM A333 Qib 6yog seamless thiab welded yeeb nkab rau qis - qhov kev pab cuam kub. Nws yog tsim los ntawm "tua" nplua - nplej hlau. PWHT tshem tawm cov kev ntxhov siab uas seem los ntawm vuam, uas tuaj yeem yog qhov pib taw qhia rau kev tawg ntawm qhov kub thiab txias. Nws kuj tseem ua rau lub Cua sov-Tshwj xeeb thaj tsam (HAZ), ua kom cov khoom tuav nws cov khoom cuam tshuam mus rau nws qhov ntsuas kub ntawm -45℃(-50℃F).
5. Q: Kuv puas tuaj yeem siv API 5L Qib B rau siab -ntaub xa hluav taws xob?
A: API 5L Qib Byog qib ntau heev rau kab yeeb nkab, tab sis nws qhov tsim nyog nyob ntawm qhov tsim siab, txoj kab uas hla, thiab phab ntsa thickness xam raws li cov qauv xws li ASME B31.8. Rau niaj hnub, siab - cov kab sib kis, qib siab dua liAPI 5L X60los yogX70yog tam sim no tus qauv raws li lawv tso cai rau cov phab ntsa nyias nyias thiab kev ntsuas siab dua, txo cov khoom siv thiab cov nqi tsheb thauj mus los.
