Nws yog technically muaj peev xwm los tsim ib tug ASTM A53 Qib A yeeb nkab siv cov txheej txheem LSAW, thiab qee cov tuam ntxhab sau nws ua cov khoom lag luam [citation: 2, citation: 4]. Txawm li cas los xij, qhov kev sib xyaw ua ke no tsis tshua muaj tshwm sim thiab sawv cev rau qhov tsis sib haum xeeb ntawm cov txheej txheem tsim khoom thiab cov khoom siv tshwj xeeb.
Cov lus hauv qab no qhia txog cov yam ntxwv tseem ceeb ntawm ASTM A53 Qib A 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:2, citation:8]. |
| Qib | Qib A: Qhov qis dua - qib zog hauv ASTM A53 specification [citation:2, citation:8]. |
| Hom | Hom E(Electric Resistance Welded).Nco tseg:LSAW tsis yog ib hom kev teev tseg (E, S, lossis F). Nws siv yog kev txuas ntxiv ntawm txoj kev tsim khoom [citation: 1, citation: 6]. |
| 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 vuam qhov ntev seam ob sab hauv thiab sab nraud [citation: 2, citation: 9]. |
| Chemical Composition (Max%) | |
| Cov pa roj carbon (C): 0.25 | |
| Manganese (Mn): 0.95 | |
| Phosphorus (P): 0.05 | |
| Sulfur (S): 0.045 | |
| Mechanical Properties (min) | |
| Yield zog:30,000 psi (205 MPa) | |
| Tensile zog:48,000 psi (330 MPa) | |
| Hom Loj Loj | Sab nraud txoj kab uas hla:16 "mus rau 64" (406mm txog 1625mm) |
| Phab ntsa Thickness:0.25 "- 2.0" (6.4mm txog 50.8mm) | |
| Cov kauj ruam tsim khoom | 1. Steel phaj xaiv thiab ntug beveling . 2. Phaj tsim rau hauv lub tog raj kheej. 3. Sab hauv thiab sab nraud submerged arc vuam . 4. Tsis yog-kev kuaj kev puas tsuaj thiab hydrostatic . 5. Kev ua tiav tiav (beveling). |
| Cov ntawv thov siv | Tsawg-kua kua, roj, cua, thiab cov kav dej; kev siv cov qauv; pawg; kev xa dej. |
Vim li cas qhov kev sib xyaw no tsis tshua muaj
Kev qhia txog ASTM A53 Qib A LSAW yeeb nkab yog technically ua tau tab sis kev lag luam tsis muaj txiaj ntsig vim tias cov txheej txheem LSAW yog tsim los rau siab -siab, siab - kev ncaj ncees. Cov lus hauv qab no qhia txog qhov tsis sib haum xeeb:
| Feature | ASTM A53 (Qhov tshwj xeeb) | LSAW (The Process) | Qhov Mismatch |
|---|---|---|---|
| Kev siv thawj zaug | Tsawg-cov kav dej siab, kev siv cov qauv . | Siab - siab roj & roj kis tau tus mob, xav tau lub luag haujlwm ntawm cov qauv. | Kev siv cov txheej txheem siab - tus nqi rau cov khoom siv siab tsawg - tsis muaj txiaj ntsig . |
| Hom Loj | NPS 1/8 "mus rau 26", nrog me me diameters feem ntau. | Loj diameters, feem ntau pib ntawm 16 "mus txog 64" + . | Cov txheej txheem yog optimized rau qhov ntau thiab tsawg dua qhov twg ASTM A53 feem ntau siv. |
| Kev Xeem Rigor | Basic kev ntsuam xyuas hydrostatic; lwm yam kev xeem ntawm tus qauv. | 100% nruj tsis- kuaj kev puas tsuaj (piv txwv li, ultrasonic, X-ray) yog tus qauv . | Qib siab ntawm kev xeem yuav tsum tau ua rau LSAW yog qhov tsis tsim nyog rau cov khoom qib A. |
| Qib Steel | Yooj yim carbon steel, piv txwv li, Qib A nrog 0.25% Carbon max . | Feem ntau siv nrog micro-alloyed, siab- lub zog steels (xws li API 5L X42, X52, X65). | Kev ua haujlwm siab - kev ua tau zoo yog ua ke nrog qib qis - kev ua tau zoo steel . |
Qhov Zoo Tshaj Plaws: API 5L
Rau loj - txoj kab uas hla LSAW kav nrog lub zog yuav tsum zoo ib yam li ASTM A53 Qib A, kev lag luam - tus qauv specification yogAPI 5L Qib B. API 5L yog tsim tshwj xeeb rau kev thauj mus los hauv cov kav dej thiab muaj:
Kev sib raug zoo:API 5L Qib B yog cov khoom siv loj rau - txoj kab uas hla LSAW kav siv roj, roj, thiab dej xa mus.
Siab zog:Nws muab qhov tsawg kawg nkaus lub zog ntawm 35,000 psi (240 MPa), uas yog 5,000 psi siab dua A53 Qib A.
Ntau Yam Khoom Specification Levels (PSL):Muab PSL1 thiab PSL2, tso cai rau kev siv tshuaj lom neeg nruj dua, kev siv tshuab, thiab kev sim tshuaj thaum xav tau.
Hauv kev xaus, thaum lub ASTM A53 Qib A LSAW yeeb nkab muaj nyob rau hauv cov khoom catalogs, nws yog ib qho khoom tsis tshua muaj uas ua ke ib qho qis - lub zog specification nrog lub siab - nqi, siab - kev tsim khoom. Rau loj - txoj kab uas hla, welded yeeb nkab siv,API 5L Qib Byog technically thiab economically superior xaiv.
