L555QO seamless steel yeeb nkabbelongs rau qib siab - qib pipeline steel hauv API 5L tus qauv. Nws qhov tsawg kawg nkaus lub zog tawm mus txog 555MPa, uas yog qhov sib npaug zoo ntawm lub zog thiab tawv dua li cov qib X80 steel (yield zog 551MPa). Los ntawm microalloying tsim thiab tswj dov thiab txias txheej txheem (TMCP), ib tug nplua -grained bainitic qauv yog tsim nyob rau hauv cov hlau, ua kom cov khoom muaj ib tug Charpy cuam tshuam lub zog ntawm ntau tshaj 27J txawm nyob rau hauv ib tug kub ntawm -46 degrees.
GNEE Group innovatively txais cov txheej txheem "online quenching thiab tempering" (Q & T) los tswj qhov hardness ntawm cov yeeb nkab lub cev hauv qab 240HV, uas tsis tsuas yog ua tau raws li NACE MR0175 hydrogen sulfide corrosion kuj yuav tsum tau, tab sis kuj zam qhov kev pheej hmoo ntawm txias tawg thaum lub vuam txheej txheem.
Npaj ib qhov project offshore pipeline? Hu rau peb pab pawg API 5L engineering hnub no rau qhov tseeb L555QO nqe thiab cov qauv MTC daim ntawv qhia. Email:sales@gneetube.com
Technical Spec Table
| Khoom | Tus nqi zoo rau L555QO (X80QO) |
| Txuj | API Spec 5L (PSL 2) |
| Kev Xa Khoom | Quenched & Tempered (Q) |
| Yield zog (Rt0.5) | 555 - 705 MPa (80.5 - 102.3 ksi) |
| Tensile zog (Rm) | 625 - 825 MPa (90.6 - 119.7 ksi) |
| Yield-rau-Tensile Ratio | Tsawg dua los yog sib npaug rau 0.93 (Critical for Safety) |
| Toughness (CVN / DWTT) | Yuav tsum tau ntawm -20℃lossis -40℃(Client teev) |
L555QO seamless kab yeeb nkab kam rau sab nraud
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Txuj |
Loj |
Txoj kab uas hla Tolerances |
Tawm ntawm Roundness |
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Lub cev lub cev |
Cov yeeb nkab kawg |
Lub cev lub cev |
Cov yeeb nkab kawg |
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SMLS |
Welded |
SMLS |
Welded |
SMLS |
Welded |
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API SPEC TIAB SA 3183 |
D<60.3mm |
+0.4mm/-0.8 hli |
+1.6mm/-0.4 hli |
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60.3mm Less dua los yog sib npaug rau D Less dua los yog sib npaug rau 168.3mm |
+0.75%/-0.75% |
Tsawg dua lossis sib npaug li 2.0% |
Tsawg dua lossis sib npaug li 1.5% |
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168.3mm ib |
+0.5%/-0.5% |
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320 hli |
+1.6mm/-1.6 hli |
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4 26mm |
+0.75%/-0.75% |
+3.2mm/-3.2 hli |
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6 10mm |
+1.0%/-1.0% |
+0.5%/-0.5% |
± 2.0 hli |
± 1.6 hli |
Tsawg dua lossis sib npaug li 1.5% |
Tsawg dua lossis sib npaug li 1.0% |
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800 hli |
+4mm/-4mm |
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1000 hli |
+1.0%/-1.0% |
+4mm/-4mm |
Tsawg dua los yog sib npaug li 15mm |
Tsawg dua lossis sib npaug li 1.0% |
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1300 hli |
+1.0%/-1.0% |
+4mm/-4mm |
Tsawg dua los yog sib npaug li 15mm |
Tsawg dua los yog sib npaug li 13 hli |
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Lus Cim: D yog qhov nominal sab nraud ntawm cov yeeb nkab.
L555QO High Yield Carbon Steel Pipes kam rau ua rau phab ntsa Thickness
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Txuj |
Qhia tawm sab nraud |
Phab ntsa Thickness |
Tolerance ntawm phab ntsa Thickness |
Tolerance ntawm phab ntsa Thickness |
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SMLS cev |
Welded yeeb nkab |
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API SPEC TS EN ISO 3183 |
- |
t Tsawg dua lossis sib npaug li 4.0mm |
+0.6mm/-0.5 hli |
+0.5mm/-0.5 hli |
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- |
4.0mm ib |
+15%/-12.5% |
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- |
5.0mm ib |
+10%/-10% |
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- |
15.0mm 0<25.0mm |
+1.5mm/-1.5 hli |
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- |
25.0mm Tsawg dua los yog sib npaug t<30.0mm |
+3.7mm/-3.0mm |
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- |
30.0mm Tsawg dua los yog sib npaug t<37.0mm |
+3.7mm/-10.0% |
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- |
t Ntau dua lossis sib npaug li 37.0mm |
+10.0%/-10.0% |
Tej Yam Kev Siv Engineering Application Cases
Tuam Tshoj-Russia East Route Natural Gas Pipeline qhov project yog qhov kev ua tiav ntawm -scale daim ntawv thov L555QO steel kav. Heilongjiang River hla ntu ntawm txoj haujlwm no siv 1420x25.7mm steel kav, uas ua tiav nrog kev ua haujlwm siab ntawm 12MPa ntawm qhov ntsuas kub ntawm -40 degree.
Ntawm qhov kev ceeb toom tshwj xeeb yog lub raj xa dej tau txais kev pom zoo ntawm kev tiv thaiv dual ntawm "hauv ob sab hauv + kev tiv thaiv kev tiv thaiv sab nraud": 100µm tuab rub -txo cov txheej txheej sab hauv phab ntsa txhim kho kev thauj mus los los ntawm 3.2%; sab nrauv phab ntsa yog ua ke nrog zinc-aluminium alloy sacrificial anode tiv thaiv, ncua lub neej tsim rau 50 xyoo.
Nyob rau hauv ntug dej hiav txwv roj thiab roj, L555QO steel kav tau pom qhov zoo tshwj xeeb hauv kev txhim kho ntawm Dongfang 13-2 roj av hauv South China Sea. Lub dynamic riser system ntawm dej tob ntawm 1500 meters siv 324x22mm seamless kav. Finite element tsom xam tau lees paub tias nws tuaj yeem tiv taus qhov khoov deformation ntawm 0.8D (inch), ua tau raws li APIRP1111 cov cai rau kev sib sib zog nqus -dej pipeline lim tsim. Cov ntaub ntawv no muab cov ntaub ntawv pov thawj tseem ceeb rau kev ua haujlwm tom ntej ntawm cov kav dej sib sib zog nqus dej hiav txwv.
Cov thev naus laus zis tseem ceeb hauv Cov Txheej Txheem Ntau Lawm ntawm API 5L L555QO pipeline
L555QO Qhov Kev Pabcuam Kev Ua Haujlwm Zoo
1. Refined Steel Source Control (Purity at the Source – Clean Steel Practice)
Qhov sib npaug ntawm lub zog siab thiab siab tawv hauv L555QO steel pib nrog lub purity ntawm cov hlau molten.
- Tsawg Sulfur thiab Phosphorus Control: Peb nruj me ntsis tswj cov qib sulfur (S) kom tsawg dua lossis sib npaug li 0.003% thiab phosphorus (P) qib kom tsawg dua lossis sib npaug li 0.010%, yog li txo qis cov tsis yog{2}}cov khoom siv hlau.
- Carbon Equivalent Control (Low CEV / Pcm): Peb tuav lub Pcm (welding tawg rhiab heev Performance index) ntawm los yog qis dua 0.20%.
2. Kev sib koom ua ke hauv Quenching & Tempering (Q&T) txheej txheem (Kev kho cua sov Precision)
Qhov "Q" hauv L555QO sawv cev rau Quenched thiab Tempered.
- Tag Nrho -Kev Kho Mob Lub Cev Kub Kub: Peb siv cov cua sov siab tshaj plaws rau quenching, ua raws li cov txheej txheem tempering, kom ntseeg tau tias cov qauv metallographic zoo sib xws (tempered sorbite / bainite) thoob plaws tag nrho cov yeeb nkab lub cev.
- Kev ntsuas kev ua tau zoo: Peb paub tseeb tias qhov Yield - rau -Tensile Ratio yog tswj nruj kom nyob qis dua 0.93, muab cov kav dej nrog cov yas txaus.
3. Fracture Arrest Testing: DWTT thiab CVN (Fracture Arrest Properties)
Hauv kev thauj mus los ntawm - siab combustible kua, tiv thaiv ntev - khiav shear fractures yog qhov tseem ceeb tshaj plaws.
- Kev Ntsuas Qhov Ntsuas Ntsuas Ntsuas (DWTT): Ua nyob rau ntawm qhov kub ntawm -20℃lossis qis dua, DWTT ua kom thaj tsam Shear (SA%) ntawm Ntau dua lossis sib npaug li 85%.
- Charpy V-Ntch (CVN) Impact Testing: Cov kev ntsuam xyuas kev cuam tshuam tau ua tiav ntawm cov yeeb nkab lub cev, vuam seams, thiab tshav kub- Cov cheeb tsam cuam tshuam (HAZ); qhov tshwm sim absorbed zog ho ntau tshaj qhov yuav tsum tau teev tseg los ntawm API 5L tus qauv.
4. Geometric Precision rau Offshore Environments (Offshore-Qib Dimensional Tolerance)
Offshore pipelay cov nkoj tsim cov kev cai nruj heev txog qhov roundness ntawm cov yeeb nkab kawg.
- Txias Expanding txheej txheem: Txhua cov yeeb nkab tau dhau los ua tag nrho - lub cev txias nthuav dav txheej txheem los txo cov kev ntxhov siab uas seem thiab xyuas kom meej meej roundness thiab txoj kab uas hla kam rau ua.
- Precision Pipe End Measurement: Laser scanners yog siv los saib xyuas cov yeeb nkab kawg sib txawv, yog li ua kom muaj kev ua haujlwm siab thaum lub sijhawm ua haujlwm vuam ua haujlwm.
5. 100% Kev Tsis Txaus Siab -Kev Ntsuas Kev Ua Phem
- Automated Ultrasonic Testing (AUT): automated tag nrho, ntau- sojntsuam sojntsuam ntawm weld seams- tus qauv tseem ceeb rau cov kav dej sab nrauv.
- Tiag -time Radiographic Testing (RT): Digital imaging inspection of pipe ends and critical sections.
- Sib Nqus Particle Testing (MT) & Penetrant Testing (PT): Kev tshuaj xyuas saum npoo ntawm cov yeeb nkab kawg bevels kom ntseeg tau tias tsis muaj qhov tawg ntawm ib feeb ua ntej xa khoom.
6. Ntawv pov thawj & tag nrho Traceability
- API Monogram: Tso cai siv API 5L Monogram.
- 3.2 MTC Kev Pabcuam: Peb txhawb nqa tag nrho kev muab EN 10204 3.2 daim ntawv pov thawj los ntawm SGS, BV, DNV, lossis ABS.
- Xaus-rau-Xaum Kev Tshawb Fawb: Los ntawm tus lej tooj hlau mus rau cov kav dej tiav, tag nrho cov ntaub ntawv tshuaj xyuas tau muab khaws cia tas mus li, nrog rau cov ntaub ntawv tshwj xeeb rau txhua lub yeeb nkab.
Kev thauj mus los thiab cia ntawm API 5L L555QO Carbon Steel Kab Yeeb Nkab:
- Rau kev thauj khoom hiav txwv, kev txhawb nqa tshwj xeeb yog siv los tiv thaiv kev poob ntawm cov khaubncaws sab nraud povtseg.
- Rau qhib- huab cua cia, UV- cov ntaub thaiv npog yog siv los tiv thaiv PE txheej laus.
- Lub tes tsho tiv thaiv yas yog ntsia ntawm qhov kawg ntawm beveled los tiv thaiv kev puas tsuaj.
API 5L L555QO Roj thiab roj yeeb nkab kab Hoobkas
GNEE API 5L Pipeline khoom npe
Cim npe nrov: api 5l l555qo pipelines rau combustible kua, Tuam Tshoj api 5l l555qo pipelines rau combustible fluids manufacturers, lwm tus neeg, Hoobkas
