API 5L PSL1 Qib A yog ib qho kev lees paub thiab cov khoom siv tshwj xeeb rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav[npe: 1, citation: 2, citation: 6, citation: 8, citation: 9]. Qhov kev sib xyaw ua ke no yog cov khoom lag luam uas muab los ntawm ntau lub tuam txhab thoob ntiaj teb rau kev thauj mus los hauv cov raj xa dej, tshwj xeeb tshaj yog rau cov ntawv thov uas yuav tsum tau ua kom zoo dua ntawm PSL2 tsis tsim nyog [citation: 1, citation: 4].
Ntawm no yog cov ncauj lus kom ntxaws specification rau API 5L PSL1 Qib A LSAW yeeb nkab:
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Yam khoom | LSAW (Longitudinally Submerged Arc Welded) Hlau Yeeb Nkab. Tsim siv cov txheej txheem xws li UOE, JCOE, lossis RBE tsim, nrog ob npaug -sided submerged arc vuam (DSAW) [citation:2, citation:3, citation:8]. |
| Txuj | API 5L: Specification rau Kab Yeeb (tam sim no ib tsab ua raws li ISO 3183) [citation:1, citation:9]. |
| Khoom Specification Level | PSL1: Cov txheej txheem zoo rau cov kab yeeb nkab, nrog cov kev xav tau nruj dua piv rau PSL2 (xws li, tsis muaj qhov yuav tsum tau kuaj xyuas, kev txwv chemistry tsis nruj, thiab lub zog siab tshaj plaws tsis tau teev tseg) [citation: 1, citation: 4, citation: 9]. |
| Qib Steel | Qib A (L210): Qib carbon steel sawv cev rau kev nkag- qib zog hauv API 5L specification [citation:1, citation:6, citation:9]. |
| Txheej txheem | LSAW (Longitudinal Submerged Arc Vuam): Cov kav dej yog tsim los ntawm kev tsim cov hlau phaj rau hauv lub tog raj kheej thiab vuam cov kav ntev ntawm ob sab hauv thiab sab nraud siv cov txheej txheem submerged arc, uas ua kom muaj kev sib sib zog nqus tob thiab zoo weld zoo [citation: 1, citation: 8]. |
| Tshuaj muaj pes tsawg leeg (max %) [citation:6, citation:9] | |
| Cov pa roj carbon (C): 0.22 | |
| Manganese (Mn): 0.90 | |
| Phosphorus (P): 0.030 | |
| Sulfur (S): 0.030 | |
| Mechanical Properties (min) [citation: 1, citation: 6, citation: 9] | |
| Yield zog:210 MPa (30,000 psi) | |
| Tensile zog:335 MPa (48,600 psi) | |
| Hom Loj Ntau Yam [citation: 2, citation: 3, citation: 5, citation: 8, citation: 10] | |
| Sab nraud txoj kab uas hla:323.9mm txog 2134mm (kwv yees . 12" rau 84") | |
| Phab ntsa Thickness:5 hli txog 60 hli (txog 120 hli muaj los ntawm qee lub tuam txhab) [citation: 3, citation: 8] | |
| Ntev:3 m txog 18.3 m (customizable, mus txog 32 m muaj rau cov kev siv tshwj xeeb) [citation: 5, citation: 8] | |
| Cov kauj ruam ntawm kev tsim khoom [citation: 2, citation: 8] | 1. steel phaj xaiv thiab ntug milling. 2. Ntug crimping thiab tsim siv cov txheej txheem JCOE lossis UOE. 3. Sab hauv thiab sab nraud submerged arc vuam. 4. Mechanical expanding (rau UOE/JCOE). 5. Tsis yog- kuaj kev puas tsuaj (Ultrasonic, X-ray). 6. Kev ntsuas hydrostatic. 7. Xaus ntsej muag thiab beveling. |
| Common Applications [citation: 1, citation: 4, citation: 9] | Kev thauj mus los ntawm cov kav dej dav dav ntawm cov roj, roj, thiab dej ntawm qhov qis qis; sib sau ua ke thiab ntws kab hauv cov dej ntws; kev xa dej mains; kev siv cov qauv; engineering thiab offshore tej yaam num uas qhov kev txhim kho cov khoom ntawm PSL2 tsis tas yuav tsum tau. PSL1 cov kav dej feem ntau yog siv rau cov kab xa tawm. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau muab raws li API 5L cov cai. |
🔍 Cov ntsiab lus tseem ceeb kom nkag siab
"Qib A" txhais li cas: Hauv API 5L, Qib A (tseem hu uaL210nyob rau hauv ISO cim) muaj qhov tsawg kawg nkaus yield zog ntawm210 MPa (30,000 psi)thiab qhov tsawg kawg nkaus tensile lub zog ntawm335 MPa (48,600 psi)[siv: 1, citation: 6, citation: 9]. Nws yog qib pib lub zog, haum rau qis dua - cov ntawv thov siab qhov siab dua - qib zog (xws li B, X42, thiab lwm yam) tsis tas yuav tsum muaj.
PSL1 vs PSL2: Kev xaiv ntawm PSL1 thiab PSL2 yog qhov tseem ceeb. PSL1 yog tus qauv zoo nrog cov kev cai yooj yim. Qhov sib txawv tseem ceeb rau PSL1 [citation: 1, citation: 4, citation: 9]:
Chemistry: Txheem txwv (raws li qhia saum toj no).
Lub zog: Tsuas yog qhov tsawg kawg nkaus tawm los thiab lub zog tensile tau teev tseg.
Kev ntsuam xyuas cuam tshuam: Tsis xav tau.
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT): Cov qauv yuav tsum muaj.
Kev siv yam: Haum rau cov kev pabcuam dav dav dav dav, cov kab sib sau ua ke, thiab cov tshuab xa tawm.
PSL2: Yuav tsum muaj kev tswj xyuas tshuaj lom neeg nruj dua, qhia txog qhov siab tshaj plaws nrog rau qhov tsawg kawg nkaus lub zog txwv, ua rau Charpy V- ntsuas qhov cuam tshuam, thiab muaj cov kev cai NDT nruj dua. PSL2 feem ntau xav tau rau kev pabcuam tseem ceeb, kev pabcuam qaub, qis-cov ntawv thov kub, thiab cov kav dej tswj hwm lub cev xws li FERC lossis DOT [citation: 1, citation: 4].
LSAW Manufacturing rau Qib A: Thaum Qib A feem ntau yog tsim los ua cov yeeb nkab seamless rau cov kab me me, cov txheej txheem LSAW tau zoo - haum rau kev tsimloj - txoj kab uas hla, tuab - phab ntsaCov kav dej hauv Qib A rau kev siv xws li kev xa dej lossis cov khoom siv hauv tsev [citation: 2, citation: 3, citation: 8]. Cov txheej txheem welding muaj zog ua kom siab - zoo seams txawm tias qhov qis dua - cov khoom muaj zog.
Qib Nomenclature: Hauv API 5L, qib tuaj yeem raug xa mus rau ob qho tib siQib A(siv lub npe qub txeeg qub teg) los yogL210(siv cov txheej txheem ISO 3183-raws li niaj hnub no).
Cov ntsiab lus
Hauv kev xaus,API 5L PSL1 Qib A LSAW yeeb nkabyog ib qho zoo -tsim, txheem cov khoom uas sib txuas cov nkag- theem zog ntawm Qib A steel nrog cov txheej txheem tsim khoom LSAW muaj zog [citation:1, citation:2]. Nws yog tus nqi -kev xaiv zoo rau qhov loj- txoj kab nruab nrab ntawm cov kav dej thiab cov qauv siv uas lub zog siab dua thiab kev ntsuas nruj dua ntawm PSL2 (xws li, rau Qib B, X42, thiab lwm yam) tsis tsim nyog [citation: 1, citation: 4]. Cov txheej txheem LSAW tso cai rau kev tsim cov kav dej nrog cov kab loj (txog 84 "+), cov phab ntsa tuab (txog 60-120 mm), thiab zoo heev weld kev ncaj ncees, ua rau nws tsim nyog rau ntau yam kev tsim kho vaj tse [citation: 2, citation: 3, citation: 5, citation: 8].API 5L PSL1 Qib A LSAW yeeb nkabnrog rau qhov yuav tsum tau muaj (OD, phab ntsa thickness, ntev) thiab cov kev xav tau ntxiv.
