ThaumASTM A53 Qib C LSAW yeeb nkabtsawg dua li Qib B, nws yog cov khoom lag luam lees paub tsim los ntawm qee cov khoom siv yeeb nkab steel, feem ntau ua haujlwm rau cov ntawv thov uas muaj zog dua li Qib B xav tau yam tsis tau hloov mus rau qib alloy xws li API 5L X42 [citation: 1, citation: 5, citation: 7, citation: 10].
Ntawm no yog cov lus qhia ntxaws ntxaws ntawm ASTM A53 Qib C LSAW yeeb nkab.
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Txuj | ASTM A53 / A53M / ASTM A53M / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / A53M / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53 / ASTM A53) thiab ASTM A53 / A53M: Standard Specification rau Yeeb Nkab, Hlau, Dub thiab Kub-Dipped, Zinc-Coated, Welded thiab Seamless [citation:1, citation:5, citation:7]. |
| Qib | Qib C: Qib siab tshaj plaws nyob rau hauv ASTM A53 specification rau welded yeeb nkab. |
| Txheej txheem | LSAW (Longitudinal Submerged Arc Vuam): Cov kav dej yog tsim los ntawm kev khoov cov hlau phaj rau hauv lub tog raj kheej, thiab cov seam ntev yog welded siv cov txheej txheem submerged arc ob sab hauv thiab sab nraud [citation: 1, citation: 3, citation: 4]. |
| Hom Loj Ntau Yam [citation: 1, citation: 5, citation: 7] | |
| Sab nraud txoj kab uas hla:16 "mus rau 64" (406mm txog 1625mm) | |
| Phab ntsa Thickness:0.25 "mus rau 2.0" (6.4 mm txog 50.8 mm), mus txog 60 mm hauv qee qhov kev siv. | |
| Kev tsim cov kauj ruam [citation: 1, citation: 3, citation: 4] | 1. Hlau phaj xaiv thiab tshuaj xyuas (feem ntau suav nrog 100% kev kuaj ultrasonic). 2. Ntug beveling thiab phaj tsim (siv JCOE los yog UOE txoj kev). 3. Sab hauv thiab sab nraud submerged arc vuam. 4. 100% Tsis yog- kuaj kev puas tsuaj (ultrasonic, X-ray). 5. Kev ntsuas hydrostatic. 6. Xaus xov (beveling) thiab txheej. |
Chemical & Mechanical Properties
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias ASTM A53 nws tus kheej [citation: 4, citation: 6] txhais tau tias tsuas yog Qib A thiab B. Txawm li cas los xij, cov neeg muag khoom teev npe Qib C [citation: 1, citation: 5, citation: 7] feem ntau ua raws nws cov khoom nrog rau lwm yam siab dua - cov qauv muaj zog, feem ntau ASTM A106 Qib C4 lossis API 2.5L X Cov lus hauv qab no muab cov ntaub ntawv siv raws li cov ntaub ntawv muaj khoom muag thiab cov khoom lag luam sib npaug.
| Khoom | ASTM A53 Qib C (Tswj muab khoom muaj nqis) | Sau ntawv |
|---|---|---|
| Tshuaj muaj pes tsawg leeg (max %) [citation:1, citation:5, citation:7] | ||
| Cov pa roj carbon (C):Nws txawv ntawm qhov chaw, feem ntau ua tau raws li X42 lossis A106 Gr C txwv. | Tsis tau hais meej meej hauv ASTM A53 tus qauv rau Qib C. | |
| Mechanical Properties (min) [citation: 1, citation: 5, citation: 7] | ||
| Yield zog:Kwv yees li . 35,000-40,000 psi (240-275 MPa) | Tus nqi yuav txawv; feem ntau muab los ua kom tau raws li A106 Gr C / API 5L X42 cov cai. | |
| Tensile zog:Kwv yees li . 60,000-70,000 psi (415-485 MPa) |
Vim li cas thiaj xaiv Qib C?
ASTM A53 Qib C nyob hauv ib qho chaw nruab nrab ntawm tus qauv- lub zog carbon cov kav dej (Qib B) thiab siab dua - lub zog, micro- cov kav dej sib txuas (API 5L X42, X52). Nov yog qhov nws feem ntau sib piv:
| Yam | ASTM A53 Gr B (Common LSAW) | ASTM A53 Gr C (Less Common LSAW) | API 5L X42 (Common LSAW) |
|---|---|---|---|
| Yield zog (min) | 35,000 psi (240 MPa) [citation: 4, citation: 6] | ~ 40,000 psi (~ 275 MPa) [citation: 1, citation: 5, citation: 7] | 42,000 psi (290 MPa) [citation: 1, citation: 10] |
| Tensile zog (min) | 60,000 psi (415 MPa) [citation: 4, citation: 6] | ~ 70,000 psi (~ 485 MPa) [citation: 1, citation: 5, citation: 7] | 60,000 psi (415 MPa) [citation: 1, citation: 10] |
| Thawj Siv Case | Lub hom phiaj dav dav, qis- cov kua dej siab, cov qauv [citation:2, citation:4]. | Kev kub siab dua, kev xav tau ntau dua ntawm cov qauv txheej txheem uas Qib B tsis txaus. | Roj & roj kis tau tus mob, siab - kab siab [citation:1, citation:10]. |
| Muaj | Siab heev [citation:1, citation:4]. | Txwv tsis pub [citation: 1, citation: 5, citation: 7]. | Siab heev [citation:1, citation:10]. |
Cov ntawv thov siv
Raws li nws lub zog siab dua, ASTM A53 Qib C LSAW yeeb nkab yog siv rau hauv kev xav tau ntau dua nyob rau hauv tib hom dav raws li Qib B [citation: 1, citation: 5, citation: 7]:
Roj thiab Roj Tsheb thauj mus los:Haum rau kev sib kis qis mus rau nruab nrab ntawm cov roj, roj, thiab dej.
Kev siv tus qauv:Siv nyob rau hauv kev tsim kho thiab engineering tej yaam num uas yuav tsum tau siab - lub zog Cheebtsam .
Piling:Yuav ua hauj lwm raws li piling kav nyob rau hauv hnyav foundation kev tsim kho uas yuav tsum tau ntau dua load peev xwm.
Cov ntsiab lus
Hauv kev xaus,ASTM A53 Qib C LSAW yeeb nkabyog ib yam khoom tshwj xeeb rau cov ntawv thov uas yuav tsum tau ua kom muaj zog ntawm cov txheej txheem LSAW thiab qhov yooj yim ntawm ASTM A53 specification, tab sis nrog lub zog theem siab dua qib B ubiquitous. Txawm li cas los xij, vim nws qhov tshwj xeeb tshwj xeeb thiab muaj, nws yog ib qho tseem ceeb los xyuas qhov tseeb cov tshuaj thiab cov khoom siv kho tshuab nrog cov chaw tsim khoom thaum lub sijhawm nug, vim cov no tuaj yeem sib txawv [citation: 1, citation: 5, citation: 7].
