Khoom Description
X70 PSL2 3LPE anti-corrosion steel yeeb nkab belongs rau cov khoom qib PSL2 hauv API 5L tus qauv, qhov "X" sawv cev rau cov yeeb nkab steel thiab "70" qhia tias qhov muaj zog tsawg kawg nkaus ntawm 70 ksi (kwv yees li 483 MPa). Piv nrog X70 PSL1 steel, X70 PSL2 steel yeeb nkab, tom qab quenching thiab tempering, muaj superior low -kub toughness thiab crack propagation resistance, ua rau nws tshwj xeeb tshaj yog haum rau kev tsim kho cov kev xav tau ntawm cov kav dej nyob rau hauv cov cheeb tsam txias heev los yog sib sib zog nqus seas.
50-Xyoo Kev Pabcuam Lub Neej: 3LPE Coated X70 PSL2 Cov Yeeb Nkab rau Hnyav Av & Marine Ib puag ncig
Technical Specification ntawm API 5L X70 PSL2 Kab yeeb nkab rau roj thiab roj
| Khoom | API 5L X70 PSL2 Specifications |
| Yield zog | 485 - 635 MPa (70, 300 - 92, 100 psi) |
| Tensile zog | 570 - 760 MPa (82, 700 - 110, 200 psi) |
| Txheej Txheem | DIN 30670 / ISO 21809-1 (3LPE) |
| Kev ntsuam xyuas cuam tshuam | Yuav tsum Charpy V-Notch @ 0℃lossis -10 degree |
| Qhov ntev | 2 "mus rau 48" (Seamless & LSAW) |
Qhov txawv ntawm 3PE thiab FBE Txheej rau X70 PSL2 Kab Yeeb
| Yam ntxwv | 3PE (3-Layer Polyethylene) | FBE (Fusion Bonded Epoxy) |
|---|---|---|
| Qauv | Peb txheej: FBE hmoov + nplaum + PE txheej txheej | Ib txheej: Ntshiab epoxy hmoov txheej |
| Mechanical Resistance | Zoo heev: Resistant rau khawb, cuam tshuam, thiab dragging | Nruab nrab: Brittle, muaj kev puas tsuaj thaum tuav |
| Corrosion Lub Neej | 30-50 xyoo: Dual tiv thaiv nrog superior tiv thaiv -permeation | 20-30 xyoo: Tshuaj tiv thaiv corrosion nkaus xwb |
| Ib puag ncig tsim nyog | Qhov hnyav hnyav: Gobi, roob roob, pob zeb backfill zones | Cov xwm txheej dav dav: Mos av, tiaj tus seabed |
| Field Joint nyuaj | Siab: Complex 3PE teb sib koom ua ke yuav tsum tau cua sov-shrink tes tsho | Tsawg: Daim ntawv thov kev sib koom ua ke yooj yim dua |
| Ua haujlwm kub | Feem ntau Tsawg dua los yog sib npaug rau70 degree(Cov hom tshwj xeeb txog 80 degree) | tuaj yeem tiv taus qhov kub thiab txias (txog100 degree) |
| Nqi | Siab dua(ntau - txheej txheem txheej txheem) | qis(ib - txheej txheem tshuaj tsuag) |
Kev sim thiab tshuaj xyuas ntawm API 5L X70 PSL2 3PE Pipeline
1. Charpy V-notch (CVN) Impact Test
- ntsuas lub microscopic toughness Performance index ntawm "absorbed zog"
Test Principple:Ib qho qauv - qhov loj me (feem ntau 10mm x 10mm x 55mm) yog txiav los ntawm cov yeeb nkab steel, nrog V-zoo li tus txiav txiav hauv nruab nrab. Lub tshuab kuaj siv lub pendulum hnyav los rhuav tshem cov qauv. Lub zog nqus los ntawm cov qauv thaum lub sij hawm tawg (unit: Joules J) yog xam los ntawm qhov sib txawv ntawm qhov siab ntawm lub pendulum rov qab los.
Vim li cas thiaj kuaj nws?
Nws simulates cov yeeb nkab lub peev xwm los tiv thaiv qhov pib tawg thaum raug rau lub zog tam sim ntawd.
Cov ntsiab lus tseem ceeb hauv API 5L:
PSL2 Yuav Tsum Tau Ua: Tsis zoo li PSL1, PSL2 yuav tsum tau xeem CVN.
Kev tswj qhov kub thiab txias: feem ntau ua ntawm 0℃lossis qis dua (piv txwv li, -10℃, -20℃). Qhov no yog qhov tseem ceeb rau thaj chaw siab siab hauv South America lossis cov dej hiav txwv tob, vim tias cov hlau ua nkig ntawm qhov kub thiab txias.
2. DWTT (Tshaj qhov hnyav Tear Test)
-Qhov taw qhia kev ua tau zoo ntawm cov pob txha macroscopic rau kev ntsuas kev ntes tawg
Test Principple:DWTT siv cov qauv loj dua li Charpy test (feem ntau yog tag nrho cov phab ntsa tuab, kwv yees li 300mm ntev). Lub tshuab kuaj poob ib lub rauj hnyav ob peb puas kilograms los yog txawm tons ntawm qhov siab, ncaj qha rhuav tshem cov qauv.
Vim li cas thiaj kuaj nws?
DWTT feem ntau saib qhov feem pua ntawm qhov chaw shear ntawm qhov tawg. Nws lub hom phiaj tseem ceeb yog txhawm rau txheeb xyuas seb cov khoom siv yeeb nkab puas tuaj yeem tiv thaiv qhov loj - nplai tawg tawm tom qab tawg.
Hauv cov ntsiab lus yooj yim: Yog tias cov yeeb nkab tawg, cov yeeb nkab uas ua tau raws li DWTT tus qauv yuav tsum ceev nrooj tawg; yog tias nws tsis yog, qhov tawg tuaj yeem tsim kua muag rau mais zoo li lub zipper (piv txwv li, "ntev-mob deb").
Cov ntsiab lus tseem ceeb hauv API 5L: Feem ntau rau qhov loj - txoj kab uas hla (Ntau dua lossis sib npaug rau NPS 16) thiab siab - cov kav xa hluav taws xob siab.
Tus qauv PSL2 feem ntau xav kom, ntawm qhov ntsuas kub, qhov nruab nrab shear cheeb tsam ntawm cov pob txha tawg mus txog ntau dua 85% (sawv cev rau cov pob txha tawg).
ntim thiab xa khoom ntawm API 5L X70 PSL2 3LPE yeeb nkab
3PE Txheej Tag Nrho Lub Cev Tiv Thaiv:
- Ua ntej-nruab Nylon Slings: Siab- lub zog nylon slings yog ua ntej- ntsia rau ntawm txhua cov yeeb nkab lossis pob. Qhov no ua kom ntseeg tau tias cov neeg ua haujlwm chaw nres nkoj hauv South America tsis tas yuav siv cov hlua hlau xaim ncaj qha mus rau cov yeeb nkab lub cev thaum thauj khoom, tiv thaiv kev puas tsuaj rau 3PE txheej los ntawm qhov pib.
- Rubber Gaskets / Straw Rope Wrapping: Cov roj hmab tuab lossis ntau txheej ntawm cov hlua khi hlua khi yog qhwv ib ncig ntawm cov yeeb nkab ntawm peb -feem peb ntawm cov dej hiav txwv los tiv thaiv cov yeeb nkab- rau - yeeb nkab kev sib txhuam los ntawm swaying nyob rau hauv lub nkoj tuav.
- Kev Tiv Thaiv Ob Qhov Kawg: Heavy-lub luag haujlwm Steel-Plastic Composite Protectors: Rau X70 siab- qib steel kav, lub beveling yog qhov tseem ceeb heev. Peb nruj me ntsis txwv tsis pub siv cov kaus mom yas pheej yig, hloov lawv nrog hnyav-cov haujlwm tiv thaiv ntxiv nrog cov nplhaib steel kom ntseeg tau tias lawv tuaj yeem tiv taus cov kev sib tw ntawm ntau tons yam tsis muaj deformation.
- Los tiv thaiv- xeb kua roj vanish: Cov hlau raug (kwv yees li 50mm-100mm) ntawm ob qho kawg ntawm 3PE yeeb nkab yuav tsum tau coated nrog cov qib siab zoo ib puag ncig cov kua roj vanish tiv thaiv corrosion los ntawm 50 hnub ntawm ntsev tsuag thoob plaws Atlantic.
Logistics Excellence:
- Kev Xaiv Lub Nkoj: Hauv qab -Deck Stowage: Nruab X70 3PE yeeb nkab nyob rau hauv lub bilge ntawm cov cab kuj, tsis nyob rau hauv lawj (Ntawm -Deck). Qhov no tsis txhob cuam tshuam ncaj qha hluav taws xob UV hluav taws xob (kom tiv thaiv PE txheej laus) thiab ncaj qha yoj yaig.
- Dunnage & Lashing: ISPM 15 Fumigated Timber. Soft Contact Reinforcement: Txhua txoj hlua khi yuav tsum tau padded nrog cov roj hmab rov qab los yog cov ntawv tuab tuab kom ua tiav "xoom hlau tiv tauj".
Npaj Npaj: API 5L X70 PSL2 + 3LPE Txheej rau kev xa khoom sai sai rau Santos thiab Georgetown.Tau txais daim ntawv tshaj tawm VIP hauv 12 teev.
API 5L X70 PSL2 3PE Los tiv thaiv-Cov yeeb nkab yeeb nkab
1. Tuam Tshoj-Russia East Route Natural Gas Pipeline
Cov ntawv tshaj tawm pej xeem qhia tias qhov project no siv ntau tshaj 200 mais ntawm Φ1422mm × 30.8mm X70 psl2 ncaj seam welded yeeb nkab, tswj kev ua haujlwm zoo heev tawg txawm tias ntawm -40 degree. Cov yeeb nkab steel siv UOE tsim + txheej txheej sab hauv thiab txheej txheem txheej txheej sab nraud, ua tiav qhov kev sib kis ntawm 12MPa.
2. Sib sib zog nqus-Hiav txwv roj thiab roj kev txhim kho
Ib txoj haujlwm South China Sea gas teb siv X70 psl2 ncaj seam yeeb nkab ua riser. Los ntawm optimized Ni-Cu-Mo alloy system tsim, nws ua tau raws li S-N nkhaus qaug zog tiv taus ntawm qhov dej tob ntawm 1500 meters. Nws yog ib qho tsim nyog sau cia tias cov kav dej hauv qab hiav txwv xav tau ntxiv tag nrho - ntsuas qhov ntsuas tawg rau kev txheeb xyuas.
3. Polar Pipeline Kev tsim kho
Nyob rau hauv Alaska roj pipeline upgrade project, X70 psl2 welded kav, los ntawm kev ntxiv 0.02% Ti keeb los inhibit austenite grain loj hlob, stabilized lub CVN cuam tshuam lub zog ntawm -60℃ntawm tshaj 240J.
FAQ
API 5L X70 yog ahigh carbon version yeeb nkab qib uas muaj cov khoom zoo corrosive nyob rau hauv ntau qhov chaw. API 5L x70, uas muaj cov khoom siv tshuaj lom neeg, muaj cov pa roj carbon ntau txog 0.22-0.28 feem pua, manganese txog li 1-1.2 feem pua, phosphorus txog li 0.03 feem pua, sulphur, npib tsib xee, chromium, thiab tooj liab hauv cov nqi meej.
Qhov txawv ntawm API 5L X65 thiab X70 yog dab tsi?
Hauv qab no yog kev sib piv ntawm cov weldability ntawm API 5L X65 thiab X70 steels.API 5L X65: Yam tsawg kawg nkaus lub zog ntawm 65,000 psi (448 MPa). API 5L X70: Yam tsawg kawg nkaus lub zog ntawm 70,000 psi (483 MPa).
Lub zog tensile ntawm X70 yog dab tsi?
Qib X70 txhais tau tias 70000 PSI yam tsawg kawg nkaus tawm lub zog thiab82 000 PSIyam tsawg kawg nkaus tensile zog.
Cov ntsiab lus carbon ntawm API 5L X70 yog dab tsi?
Cov pa roj carbon monoxide yog cov khoom tseem ceeb hauv cov hlau thiab yog lub luag haujlwm rau kev txhim kho nws lub zog thiab hardness. Hauv API 5L X70 steel, cov ntsiab lus carbon feem ntau yog sib txawv0.06% thiab 0.15%.
Cim npe nrov: api 5l x70 psl2 3lpe coated kav, Tuam Tshoj api 5l x70 psl2 3lpe coated kav manufacturers, lwm tus neeg, Hoobkas
