API 5L X56 Electric Resistance Welded (ERW) yeeb nkab
Lub ntsiab lus tseem ceeb
Standard specification rauhluav taws xob kuj welded steel kab yeeb nkabhauv qabAPI 5Lspecification.Qib X 56yog asiab dua -lub zog pipeline steeluas zaum ntawm X52 thiab X60 hauv API 5L qib ntaiv, nrog rau qhov tsawg kawg nkaus lub zog ntawm56,000 psi (390 MPa) .
Lub npe piav qhia
| Ib feem | Lub ntsiab lus |
|---|---|
| API | Lub koom haum American Petroleum |
| 5L | Specification rau kab yeeb nkab |
| X56 | Qib npe –X= qib pipeline,56= Yam tsawg kawg nkaus tawm lub zog hauv ksi (56,000 psi) |
| Hluav taws xob Resistance Welded | Cov txheej txheem tsim khoom - cov yeeb nkab tsim los ntawm coil thiab welded longitudinally |
Cov yam ntxwv tseem ceeb ntawm X56 ERW Yeeb Nkab
| Feature | Kev piav qhia |
|---|---|
| Hom khoom | Carbon Steel(micro{0}} alloyed) |
| Kev tsim khoom | Hluav taws xob Resistance Welded (ERW)- longitudinal weld seam tam sim no |
| Khoom Specification Levels | PSL1los yogPSL2(PSL2 muaj nruj dua chemistry, yuav tsum tau kuaj qhov cuam tshuam) |
| Cov khoom tseem ceeb | Zoo sib npaug ntawmlub zog, weldability, thiab kev lag luam |
| Hom kab | 21.3mm txog 660mm(1/2 "mus rau 26") |
| Hom Phab Ntsa Thickness | 1.8mm txog 22.2mm |
** Chemical Composition (Maximum %) **
| Lub ntsiab | PSL1 | PSL2 (Tswj) |
|---|---|---|
| Cov pa roj carbon (C) | 0.26 | 0.24(max) |
| Manganese (Mn) | 1.40 | 1.40 |
| Phosphorus (P) | 0.030 | 0.025 |
| Sulfur (S) | 0.030 | 0.015 |
| Silicon (Si) | 0.40 | Tsis tau teev tseg |
Nco tseg: PSL2 muaj kev tswj hwm nruj dua ntawm cov pa roj carbon, phosphorus, thiab sulfur kom txhim kho weldability thiab toughness.
Mechanical Properties
| Khoom | Kev xav tau |
|---|---|
| Yield zog (Min) | 390 MPa (56,000 psi) |
| Tensile zog (Min) | 490 MPa (71,000 psi) |
| Elongation | Nws txawv ntawm phab ntsa thickness |
Cov lus sib piv: X56 vs. Cov kab yeeb nkab nyob ib sab
| Qib | Yield zog Min (MPa/ksi) | Tensile zog Min (MPa/ksi) | Txoj hauj lwm |
|---|---|---|---|
| X52 | 360 / 52 | 460 / 67 | Tsawg zog |
| X56 | 390 / 56 | 490 / 71 | Nruab nrab |
| X60 | 415 / 60 | 520 / 75 | Siab zog |
Cov ntawv thov siv
Roj thiab roj xa mus kav
Natural gas sib sau ua ke thiab faib kab
Siab - kev thauj mus los ntawm cov kua
Petrochemical cog piping
Kev thauj dej thiab slurry
Offshore pipelines
Cov qauv siv(furniture, qhov rais, qhov rooj, tsev, choj, mechanical)
ERW Manufacturing txheej txheem
ERW kav dej yog tsim los ntawm:
Kev tsim:Hlau kauj yog txias- ua rau hauv ib lub cylindrical zoo.
Vuam:Cov npoo yog rhuab los ntawmsiab - zaus hluav taws xob tsis kamthiab forged ua ke nyob rau hauv siab.
Kev kho cua sov:Lub weld seam yuav normalized los ua kom zoo cov qauv nplej.
NDT:Weld seam yog100% tsis yog- kuaj kev puas tsuaj(ultrasonic los yog eddy tam sim no).
Qhov zoo:
Tus nqi qis duatshaj seamless yeeb nkab
Zoo heev qhov tseeb(Qhov tseeb OD thiab phab ntsa thickness)
Ntev ntevmuaj (txog 18m)
Qhov Loj Muaj
| Txoj kev tsim khoom | Qhov Loj |
|---|---|
| ERW | 21.3mm txog 660mm (1/2 "mus rau 26") |
| Seamless | 1 "mus rau 14" (rau kev sib piv) |
| LSAW | 14 "mus rau 60" (rau kev sib piv) |
* Ceeb Toom: ERW feem ntau yog siv rau X56 qhov ntau thiab tsawg txog 24-26". Tshaj qhov no, LSAW lossis seamless yuav raug teev.*
PSL1 vs PSL2 rau X56
| Yam | PSL1 | PSL2 |
|---|---|---|
| Chemistry | Txheem txwv | Kev tswj nruj dua(qis C, P, S) |
| Lub zog | Min tsuas qhia | Min thiab Maxteev |
| Kev ntsuam xyuas cuam tshuam | Tsis xav tau | Yuav tsum tau(qhov kub thiab txias) |
| NDT Requirements | Txuj | nruj dua |
| Kev siv yam | Kev pabcuam dav dav | Kev pabcuam tseem ceeb, kev pabcuam qaub, qis kub |
Kev xeem yuav tsum tau
X56 ERW yeeb nkab feem ntau undergoes:
Chemical Component Analysis
Mechanical Properties(Tensile, Yield, Elongation)
Flattening Test
Khoov Test
Impact Test(rau PSL2)
Hydrostatic Test
X-ray lossis Ultrasonic Examination
Hardness Test(thaum teev tseg)
Txheej & Kev Tiv Thaiv Kev Xaiv
X56 ERW yeeb nkab feem ntau muab nrog:
Dub(Pob zeb tiav)
3LPE (3-txheej polyethylene)- rau faus pipelines
FBE (Fusion Bonded Epoxy)
Coal Tar Epoxy
Varnish txheejlos yoganti- xeb roj
Bitumen txheej
International Standard Equivalents
| Txuj | Qib sib npaug |
|---|---|
| API 5L | X56 |
| TS EN ISO 3183 | L390 |
| GB/T 9711 | L390 |
| DNV OS{0}}F101 | Qib 450 |
| CSA Z245 | Qib 390 |
Kev Lag Luam Lub Luag Haujlwm & Kev Xaiv Logic
X56 nyob qhov "intermediate-siab zog" txoj hauj lwm nyob rau hauv kab yeeb nkab tsev neeg:
| Qib Siab | Qib | Kev siv yam |
|---|---|---|
| Tsawg | A, B | Tsawg-siab, tsis yog- tseem ceeb |
| Nruab nrab | X42, X46, X52 | General kis tau tus mob |
| Nruab nrab -High | X56 | Siab dua - cov ntawv thov siab |
| Siab | X60, X65 | Siab -siab, ntev-ntaus deb |
| Ultra -High | X70, X80 | Dej tob, arctic, siab -efficiency |
Thaum xaiv X56:
Thaum tsim siab tshaj X52 muaj peev xwm tab sis tsis xav tau X60
Rau siab dua - cov kab sib kis yuav tsum tau nce phab ntsa thickness efficiency
Hauv tej yaam num nrog X56 specifications uas twb muaj lawm
Rau cov ntawv thov kev pabcuam qaub (thaum teev raws li PSL2 nrog kev sim ntxiv)
Fabrication & Weldability
Zoo weldabilityvim tswj chemistry thiab carbon sib npaug
Field welding:Cov txheej txheem tsim nyog tau pom zoo, tshwj xeeb tshaj yog rau PSL2
Preheat:Tej zaum yuav xav tau rau cov phab ntsa tuab nyob ntawm qhov sib npaug ntawm cov pa roj carbon
Khoov:Yuav ua tau txias- teb khoov tsis pub dhau qhov txwv
Thaum kawg Takeaway: API 5L X56 ERW Tubeyog anruab nrab - siab zog welded kab yeeb nkabuas sau qhov sib txawv ntawm X52 thiab X60 hauv API 5L qib ntaiv. Nrog qhov tsawg kawg nkaus tawm lub zog ntawm56,000 psi (390 MPa), nws muab kev txhawb zog rausiab dua - cov ntawv thov roj thiab roj xa musqhov twg X52 tsis txaus tab sis X60 yuav dhau - qhia. Muaj nyob rau hauv ob qho tib si PSL1 thiab PSL2 qib zoo, nws feem ntau siv hauvpipelines, kev sib sau ua ke, thiab kev siv cov txheej txheemyuav tsum tau muaj zog ntxiv nrog zoo weldability.
