1. Cov khoom lag luam tseem ceeb & cov tshuaj / cov khoom siv kho tshuab
API 5L Gr.b Yeeb tau tsim nyob rau hauv ob qib khoom lag luam tshwj xeeb:PSL 1thiabPSL 2Cov. PSL 2 muaj ntau txoj kev nruj tshuaj, tshuab, thiab kev kuaj mob tshaj PSL 1. Cov ntxhuav hauv qab no cov qauv.
Tshuaj lom neeg tshuaj (PSL 1 & PSL 2)
Cov tshuaj lom neeg muaj pes tsawg leeg yog feem ntau yog dab tsi txhais tau tias cov qib kawm. Nco ntsoov tias rau PSL 2, Carbon sib npaug (CE) kev txwv yog yuam kom ntseeg tau zoo weldability.
| Lub ntsiab | API 5L Gr.b PSL 1 (Mass% Max) | API 5L Gr.b PSL 2 (Mass% Max) |
|---|---|---|
| Carbon (c) | 0.28 | 0.24 |
| Manganese (mn) | 1.20 | 1.20 |
| Phosphorus (p) | 0.030 | 0.025 |
| Sulphur (s) | 0.030 | 0.015 |
| Silicon (si) | ... | 0.45 |
| Vanadium (V) | ... | 0.10 |
| Niobium (nb) | ... | 0.05 |
| Titanium (ti) | ... | 0.04 |
| Tooj Liab (Cu) | ... | 0.50 |
| Npib tsib caug (ni) | ... | 0.50 |
| Chromium (cr) | ... | 0.50 |
| Molybdenum (mo) | ... | 0.15 |
| Nitrogen (n) | ... | 0.012 |
| Carbon sib npaug (CE) | Tsis tas yuav | 0.43 max |
* Nco tseg: "..." txhais tau hais tias lub ntsiab txhais tau tias tsis tau teev rau PSL 1. CE}} ({} (ni + cu) /15.*
Cov cuab yeej kho tshuab (tensile)
Cov khoom siv mechanies txhais cov yeeb nkab lub zog.
| Ntiag tug | API 5L Gr.b PSL 1 | API 5L Gr.b PSL 2 |
|---|---|---|
| Yield zog (min) | 245 MPa (35,500 psi) | 245 MPa (35,500 psi) |
| Tensile lub zog (min) | 415 MPa (60,200 PSI) | 415 MPa (60,200 PSI) |
| Tos - rau - tensile piv (max) | Tsis teev | 0.93 |
| Elongation (min) | Xws li cov mis nyob hauv API 5L | Xws li cov mis nyob hauv API 5L |
Qhov kev xav tau elongation nyob ntawm lub tensile kuaj cov hom thiab cov phab ntsa tuab.
Qhov seem tsis zoo tshaj plaws (ib qho ntau thiab tsawg)
API 5L cov yeeb nkab los hauv ntau qhov ntau thiab tsawg. Tus txheej txheem qhia cov cheeb tsam sab nraud (OD) thiab phab ntsa tuab (wt) thev taus.
| Chaw ua uas tsis tau haus | Ntau yam | Piv txwv li ntau thiab tsawg |
|---|---|---|
| Sab nraud ntawm lub taub (od) | 0.405 "mus rau 80" (NPS 1/8 rau Nps 80) | 2-3/8", 4-1/2", 6-5/8", 8-5/8", 12.75", 24", 36" |
| Phab Ntsa Thickness (Wt) | Teem sijhawm 5s rau XXS | Feem ntau siv: std (teem sijhawm 40), xs (sij hawm 80) |
| Qho ntev | Ib Leeg Random: 5-7M, Ob Chav Random: 11-13m, lossis ntau dua III (ntau dua lossis sib npaug rau 15m) | Txiav rau ntev kuj yog ib qho uas muaj rau cov haujlwm. |
2. Kev tsim cov txheej txheem
API 5L Gr.b cov yeeb nkab tuaj yeem tsim tawm siv ob txoj kev tseem ceeb:
Seamless (sms):Ua los ntawm tho ib lub nplua nuj ntawm cov hlau. Tsis muaj kev sib tshuam weld. Feem ntau siv rau cov ntawv thov siab dua.
Welded (ERW, pom, thiab lwm yam):
Cov Hluav Taws Xob Hluav Taws Xob Welded (ERW):Tsim los ntawm skelp thiab cov leeg yog welded los ntawm hluav taws xob tiv thaiv. Ntau yam rau me me diameters me me.
Submerged Arc Welded (pom):Tsim los ntawm phaj thiab welded longitudinally (lsaw) lossis tus mob (ssaw). Siv rau cov kab mob loj dua.
3. Cov ntawv thov tseem ceeb
API 5L Gr.b Yeeb Nkab yog tsim rauKab YeebCov ntawv thov, lub ntsiab lus nws yog siv los txua cov kav dej rau kev sib cav ntawm cov kua. Nws thawj cov kev siv suav nrog:
Roj & Roj Kis:Thauj cov roj av uas muaj roj thiab cov nkev nyeg los ntawm teb kom rov ua kom zoo thiab faib khoom.
Natural Gas Faib:Mains thiab cov kev pabcuam rau cov tshuab hluav taws xob kom hluav taws xob.
Dej Pipelines:High - Lub Siab Dej Sib Tw Kab Thiab Cov Kab Txhaj Tshuaj Rau Dej Dej nyab hauv cov roj av.
Cov ntawv thov txheej txheem:Thaum tsis yog nws lub hom phiaj tseem ceeb, nws qee zaum siv hauv piling lossis raws li cov qauv qauv vim nws lub zog siab, txawm yog As500 Gr.B muaj ntau dua rau cov qauv ntshiab.
4. Qhov zoo ntawm API 5L GR.B
Cov Qauv Ua Haujlwm:API 5L yog lub thoob ntiaj teb lees paub thiab ntseeg siab.
Tus nqi -}} Ua tau zoo:Qib B Yuav muab lub zog zoo rau nws tus nqi, ua rau nws xaiv lub neej ntawd rau ntau lub nruab nrab}- qhov siab hnyav.
Zoo weldability:Nws cov tshuaj chemical (tshwj xeeb tshaj yog nyob rau PSL 2) ua rau nws yooj yim rau weld hauv kev teb siv cov qauv.
Kev muaj peev xwm muaj:Nws yog tsim los ntawm steel mills thoob ntiaj teb hauv ntau qhov ntau thiab tsawg ntawm cov ntau thiab tsawg, ua rau nws muaj.
