API 5L X70 Kab Pipes Rau Roj & Roj
API 5L X70 pipeline yog qhov siab - zog kab yeeb nkab steel ua raws li American Petroleum Institute (API) SPEC 5L tus qauv, koom nrog qib siab - qib (X70) qeb nrog qhov tsawg kawg nkaus tawm los ntawm485 MPa (70,300 psi). Nws yog dav siv nyob rau hauv ntev -nruab deb, siab- lub zog kis tau tus mob rau roj, natural gas, thiab lwm yam khoom siv hluav taws xob.
Cov yeeb nkab muaj nyob rau hauv ob theem zoo:PSL1thiabPSL2, nrog PSL2 tsim los rau cov kev pabcuam hnyav dua xws li qhov kub thiab txias, qaub (H₂S-muaj) ib puag ncig, lossis thaj chaw seismically active. Hauv cov qauv European, qib X70 feem ntau hu uaL485, thiab nws tau dhau los ua ib qho ntawm cov khoom siv tseem ceeb xaiv rau onshore thiab offshore roj thiab roj kab kab.
Koj puas tau pom cov ntaub ntawv tsim nyog rau polar thiab tob -sea pipeline engineering? API 5L X70 pipeline steel, -20℃cuam tshuam lub zog Ntau dua los yog sib npaug rau 40J, zoo heev kub-kub toughness,pub dawb rau cov teeb meem engineering!
API 5L X70 Pipe Specifications Table
| Yam khoom | Parameter |
|---|---|
| Txuj | API SPEC 5L (46th tsab) |
| Qib | X70 (L485) |
| Khoom Specification Level | PSL1 / PSL2 |
| Yam tsawg kawg nkaus Yield Strength | 485 MPa (70,300 psi) |
| Yam tsawg kawg Tensile Strength | Ntau dua lossis sib npaug li 570 MPa |
| Yield -rau-Tensile Ratio (Y/T) | Tsawg dua lossis sib npaug rau 0.93 (yuav tsum tau rau PSL2) |
| Impact Toughness | Charpy V-qhov ntsuas ntsuas ntawm -20 degree: nruab nrab Ntau dua lossis sib npaug rau 40 J (PSL1), Ntau dua lossis sib npaug rau 80 J (PSL2) |
| Tsis yog -Kev kuaj kev puas tsuaj | PSL1: Sampling UT/RT; PSL2: 100% UT + 100% RT |
| Siv tau ib puag ncig | Onshore/Offshore/Sour Service/Low Temperature/High Pressure |
| Txoj kev sib txuas | Butt welding, coupling kev twb kev txuas, spigot-thiab-socket joint |
API 5L X70 Mechanical Properties Table
| Khoom | PSL1 Requirement | PSL2 Kev Xav Tau |
|---|---|---|
| Yam tsawg kawg nkaus Yield Strength (Rt₀.₅) | 485 MPa ua | 485 MPa ua |
| Maximum Yield zog | Tsis muaj kev txwv siab | Tsis muaj kev txwv siab (tab sis Y / T Tsawg dua lossis sib npaug rau 0.93) |
| Yam tsawg kawg Tensile Strength (Rm) | Ntau dua lossis sib npaug li 570 MPa | Ntau dua lossis sib npaug li 570 MPa |
| Yield-rau-Tensile Ratio (Rt₀.₅/Rm) | Tsis tau teev tseg | Tsawg dua lossis sib npaug li 0.93 |
| Elongation (A₅₀ hli) | Ntau dua lossis sib npaug li 18% | Ntau dua lossis sib npaug li 18% |
| Charpy Impact Zog (-20 degree) | Nruab Nrab Ntau dua lossis sib npaug rau 40 J | Qhov nruab nrab loj dua lossis sib npaug rau 80 J, tus neeg siab dua lossis sib npaug rau 60 J |
| Hardness (rau kev pabcuam qaub) | Tsis xav tau | Tsawg dua lossis sib npaug rau 22 HRC (ib Daim Ntawv Ntxiv H) |
API 5L X70 Pipe Dimensions (Seamless & Welded) Rooj
| Hom | Sab Nraum Sab Nraud (mm) | Phab ntsa Thickness Range (mm) | Cov ntawv thov siv |
|---|---|---|---|
| Seamless Yeeb Nkab (SMLS) | 8 - 630 | 1 - 200 | Siab -txoj kab siab, kev faib hluav taws xob hauv nroog, kev sib txuas ntawm lub taub hau |
| Welded yeeb nkab (welded) | 219 - 1240 | 6 - 40 | Ntev -kab kab nyob deb, offshore platforms, loj - txoj kab nruab nrab |
API 5L X70 Equivalent Table (Qib sib npaug)
| Txuj | Qib | Sau ntawv |
|---|---|---|
| TS EN ISO 3183 | L485 | Kev lees paub thoob ntiaj teb sib npaug rau X70 |
| GB/T 9711 | L485 | Suav teb tus qauv counterpart |
| TS EN 10208-2 | S485 | European standard kab yeeb nkab qib |
| TIAB SA 3444 | STK 500 | Nyiv tus qauv kwv yees qib (tsis muaj qhov sib npaug) |
| ASTM A53 | Tsis siv tau | Tsuas yog rau cov ntawv thov qis - zog piping |
API 5L X70 Manufacturing Hom
| Hom | Txheej txheem piav qhia | Daim ntawv thov Scenario |
|---|---|---|
| Seamless Yeeb Nkab (SMLS) | Tsim los ntawm kub dov los yog txias kos duab yam tsis muaj weld seam, muab lub zog zoo ib yam | High-siab, siab- kub, thiab cov ntawv thov tseem ceeb xws li kev sib txuas ntawm lub taub hau thiab cov roj hauv nroog |
| Welded yeeb nkab (welded) | Ua los ntawm kev tsim steel phaj los yog sawb thiab vuam cov seam. Cov txheej txheem muaj xws li: • ERW(Electric Resistance Vuam) • LSAW(Longitudinal Submerged Arc Vuam) • SSAW/DSAW(kauv / Dual Submerged Arc Vuam) |
Loj - txoj kab uas hla, ntev - qhov deb lub cev kav dej; tus nqi- zoo thiab haum rau ntau lawm |
API 5L X70 Nta
Siab zog thiab toughness: Tawm lub zog tshaj 485 MPa, muab kev ua haujlwm zoo heev rau deformation.
Tsawg-Alloy Design: Microalloying ntsiab xws li niobium (Nb), vanadium (V), thiab titanium (Ti) refine grain qauv thiab txhim khu kev ua tau zoo.
Weldability zoo: Cov pa roj carbon sib npaug (Ceq) tswj qis dua 0.38%, ua kom ntseeg tau qhov chaw vuam zoo.
Corrosion Resistance: Haum rau qhov chaw ua haujlwm qaub (H₂S), nrog kev tiv thaiv hydrogen -induced cracking (HIC) thiab sulfide stress corrosion cracking (SSCC).
Zoo heev Low-Tsub Toughness: Charpy cuam tshuam lub zog Ntau dua lossis sib npaug li 40 J ntawm -20 degree, haum rau thaj chaw txias.
High Dimensional Accuracy: Sab nraud txoj kab uas hla kam rau ua ± 0.75%, phab ntsa thickness kam rau ua -8% rau +19%.
API 5L X70 Qhov Zoo
Txo phab ntsa Thickness, txuag khoom: Piv rau X60 / X65, X70 tso cai rau cov phab ntsa nyias nyias nyob rau hauv tib lub siab, txo cov kev siv steel thiab txo cov nqi tsheb thauj mus los thiab kev teeb tsa.
Txhim khu kev thauj mus los: Ntau lub zog ua kom muaj kev ua haujlwm siab dua, ua rau cov kav dej txuas ntxiv.
Txhim khu kev ruaj ntseg: PSL2 qib muaj peev xwm ua tau zoo tshaj plaws, ua rau nws zoo tagnrho rau cov xwm txheej geological nyuaj xws li av qeeg lossis av qeeg - thaj chaw uas tuaj yeem ua tau.
Tus nqi qis dua Lifecycle: Txawm hais tias chav tsev tus nqi siab dua me ntsis, lub zog siab thiab kev saib xyuas tsis tshua muaj txiaj ntsig ua rau lub sijhawm zoo dua -cov nqi siv sijhawm.
Environmentally Friendly & Sustainable: TMCP Advanced (Thermo-Mechanical Control Process) txo kev cia siab rau cov khoom siv kim kim xws li Mo thiab Ni, ua kom muaj "lub teeb yuag" ntau lawm.
Kev xeem xa mus API 5L X70 Yeeb Nkab (Key Testing Item)
Hydrostatic Test: Ua rau txhua lub kav dej; ntsuas siab tsis tsawg tshaj li 1.25 npaug ntawm kev tsim siab.
Tsis yog -Kev Ntsuas Kev Puas Tsuaj (NDT):
Ultrasonic Testing (UT): Tag nrho - kev tshuaj xyuas lub cev rau qhov tsis xws luag
Radiographic Testing (RT): Weld seam tshuaj xyuas cov kab nrib pleb, porosity, thiab lwm yam.
Mechanical Performance Tests:
Tensile Test
Charpy Impact Test
Drop Weight Tear Test (DWTT) - siv los ntsuas qhov tawv nqaij puas
Chemical Composition Analysis: Direct nyeem ntawv spectrometer kom ntes C, Mn, S, P, Nb, V, Ti, thiab lwm yam.
Corrosion Resistance Tests:
HIC Test (NACE TM0284)
SSC Test (NACE TM0177) - muaj feem xyuam rau cov kev pabcuam qaub
Dimensional thiab Morphological Inspection: Laser txoj kab uas hla ntsuas, ultrasonic thickness ntsuas, ovality nrhiav, thiab lwm yam.
API 5L X70 Roj thiab roj yeeb nkab kab Hoobkas
API 5L Carbon Steel Kab Yeeb Nkab Ntim thiab Shipping
FAQ
Dab tsi yog qhov txawv ntawmX65i x70 cev?
X70 muaj qhov tsawg kawg nkaus lub zog ntawm 485MPa, uas yog kwv yees li 7.8% siab dua X65 (450MPa), ua rau nws tsim nyog rau siab - siab loj - txoj kab uas hla ntev - nrug kav; X65 feem ntau yog siv rau cov pa siab - kev thauj mus los ntawm cov roj thiab roj, thaum X70 tsom rau kev ua haujlwm hnyav xws li cua txias, dej hiav txwv sib sib zog nqus, leej faj- muaj lossis thaj chaw seismic, xws li Tuam Tshoj Russia East Gas Pipeline; Hais txog kev lag luam, txawm hais tias chav tsev nqi ntawm X70 yog siab dua me ntsis, nws tuaj yeem txuag tau li ntawm 80 tons ntawm cov hlau ib mais los ntawm kev txo cov thickness ntawm phab ntsa, thiab cov nqi thauj mus los thiab kev teeb tsa tau qis dua; Hais txog cov txheej txheem yuav tsum tau ua, X70 nyob rau hauv PSL2 qib muaj kev tswj nruj dua li qis- qhov kub thiab txias cuam tshuam rau lub caij ntuj sov (-20℃lub caij ntuj sov tshwj xeeb ua haujlwm Ntau dua lossis sib npaug rau 80J) thiab carbon sib npaug, thiab siab dua vuam nyuaj.
API 5L X70 sib npaug ASTM yog dab tsi?
API 5L X70 thiab ASTM A672 CC70 yog ob qho tib si siab - lub zog carbon steel pipeline cov ntaub ntawv nrog qhov tsawg kawg nkaus lub zog ntawm 485 MPa, tab sis lawv yog cov txheej txheem sib txawv thiab tsim nyog rau kev ua haujlwm sib txawv, thiab tsis tuaj yeem hloov ncaj qha.
Cim npe nrov: api 5l x70 kab kav rau roj & roj, Tuam Tshoj api 5l x70 kab kav rau roj & roj manufacturers, lwm tus neeg
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