API 5L X70 Kab Pipes Rau Roj & Roj
API 5L X70 kab yeeb nkabyog micro-alloyed carbon steel yeeb nkab uas muaj qhov tsawg kawg nkaus yield zog ntawm 485 MPa (70,300 psi), muab nyob rau hauv PSL1 thiab PSL2 rau API Spec 5L thiab raws li qib L485 rau ISO 3183. PSL2 yog txhais los ntawm ib tug band es tsis yog ib tug pem teb: yield khiav 48007-633, tensile 570–760 MPa (82,700–110,200 psi), thiab tawm los- rau- tensile ratio yog capped ntawm 0.93. Peb qhov kev txiav txim siab txiav txim siab seb cov lus hais puas tuaj yeem siv tau - cov khoom lag luam tshwj xeeb, kev xa khoom, thiab qhov cuam tshuam qhov ntsuas kub sau rau hauv daim ntawv xaj khoom.
API 5L X70 Pipe Specifications
| Qib npe | X70 (API 5L)=L485 (ISO 3183, GB/T 9711)=L485MB (EN 10208-2) |
|---|---|
| Specification qib | PSL1 thiab PSL2; PSL yuav tsum tau teev nyob rau hauv qhov kev txiav txim |
| Yam tsawg kawg nkaus yield zog | 485 MPa (70,300 psi) |
| Yield zog, PSL2 | 485-635 MPa (70,300-92,100 psi), dual khi |
| Tensile zog, PSL2 | 570-760 MPa (82,700-110,200 psi) |
| Yield-rau-tensile ratio, PSL2 | Max 0.93 hli |
| Charpy cuam tshuam, PSL2 yeeb nkab lub cev | 27 J nruab nrab thiab 20 J tus neeg ntawm 0 degree; qis kub los ntawm kev pom zoo |
| Carbon sib npaug, PSL2 | CE (IIW) 0.43 siab tshaj; CE (Pcm) 0.25 siab tshaj |
| Txoj kev tsim khoom | Seamless, ERW/HFW, LSAW, SSAW (HSAW) |
| Kev xa khoom xa tuaj | X70M (thermomechanically dov), X70Q (quenched thiab tempered), qaub variants X70MS thiab X70QS |
API 5L X70 Mechanical Properties
| 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 li 22 HRC (ib Daim Ntawv Ntxiv H) |
API 5L X70 Pipe Dimensions (Seamless & Welded)
| 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 hauv qhov dej |
| Welded yeeb nkab (welded) | 219 - 1240 | 6 - 40 | Ntev -kab kab nyob deb, offshore platforms, loj - txoj kab nruab nrab |
Dimensional Tolerances
| Yam khoom | Loj band | Ua siab ntev |
|---|---|---|
| Sab nraud txoj kab uas hla, yeeb nkab lub cev | Txhua qhov ntau thiab tsawg tshaj 60.3 hli | ±0.75 % |
| Sab nraud txoj kab uas hla, yeeb nkab kawg | 219.1–273.1 hli | +1.6 hli / −0.4 mm |
| Sab nraud txoj kab uas hla, yeeb nkab kawg | 274-610 hli | +2.4 hli / −0.8 mm |
| Phab ntsa thickness, welded | 219.1–457 hli | +15 % / −12.5 % |
| Phab ntsa thickness, welded | 508-610 hli | +19.5 % / −8 % |
| Tawm ntawm roundness, yeeb nkab kawg | D / t mus txog 75 | 1.0% ntawm qhov ntsuas sab nraud |
| Tawm ntawm roundness, yeeb nkab kawg | D / t saum toj 75 | 1.5% ntawm qhov ntsuas sab nraud |
| Kev ncaj | Ntev ntev | 0.15% ntawm qhov ntev |
| Qhov hnyav, ib qhov ntev | Txhua qhov ntau thiab tsawg | +10 % / −3.5 % |
| Ntev | SRL, DRL, tsau | −0 / +100 mm ntawm nominal |
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 |
Supply Range los ntawm Manufacturing Route
| Txoj kev | Sab nraud txoj kab uas hla | Phab ntsa thickness | Hom kev siv |
|---|---|---|---|
| Seamless (SMLS) | 60.3-610 hli (2.375-24 nyob rau hauv) | 4-60 hli | Cov kab me me thiab nruab nrab, cov kav dej zoo, siab - ceg siab |
| ERW / HFW | 60.3-610 hli (2.375-24 nyob rau hauv) | 3.2-16 hli | Nruab nrab bore sib sau ua ke thiab faib kab |
| LSAW (UOE / JCOE) | 406-1,422 hli (16-56 nyob rau hauv) | 6-45 hli | Loj - kab kab kab, kab tawm sab nraud |
| SSAW / HSAW | 508-2,540mm (20-100 nyob rau hauv) | 6-25 hli | Txoj kab uas hla loj heev, siab - ntim kis tau tus mob |
Cov lej ntau piav qhia seb txhua txoj hauv kev tuaj yeem tsim tau hauv qib no. Paub meej qhov tseeb sab nraud txoj kab uas hla thiab phab ntsa thickness ua ke tiv thaiv koj qhov project teem ua ntej quoting. Length: SRL 6 m, DRL 12 m, mus txog 18 m los ntawm kev pom zoo. Xaus: tiaj, bevelled ntawm 30℃+5℃/-0℃nrog 1.6 hli ± 0.8 hli hauv paus ntsej muag, los yog threaded thiab ua ke.
Delivery Conditions thiab Sour Service Suffixes
| Lub npe | Qhov xwm txheej | Qhov twg yog xaiv |
|---|---|---|
| X70M | Thermomechanically dov (TMCP) | Lub neej ntawd rau welded X70. Qhov zoo tshaj plaws toughness thiab weldability ntawm no lub zog |
| X70Q | Quenched thiab tempered | Seamless yeeb nkab thiab tej yaam num uas xav tau lub zog zoo tshaj plaws |
| X70N | Li qub | Cov xwm txheej qub, tsis tshua muaj tshwm sim ntawm X70. Txheeb xyuas qhov muaj nyob ua ntej qhia |
| X70 MAS | Thermomechanically dov, kev pabcuam qaub | ntub H₂S nrog lub toughness ntawm TMCP khaws cia |
| x70 qw | Quenched thiab tempered, qaub pab | H₂S ntub dej ntawm cov khoom seamless |
API 5L X70 Daim ntawv thov
Onshore Trunk Lines
X70 khwv tau nws qhov chaw nyob ntawm qhov ntev - nrug, siab - cov pa xa hluav taws xob uas cov phab ntsa tuab yog tus nqi tseem ceeb. Tsiv ntawm X65 mus rau X70 cia ib qho kev tsim kom txo cov phab ntsa tuab ntawm tib lub zog ua haujlwm, uas txiav tonnes ib kilometer, freight thiab vuam teev ua ke. Feem ntau tus ntoo khaub lig- lub teb chaws cov kab hluav taws xob tau ua haujlwm hauv ob xyoo dhau los yog X70 PSL2.
Offshore thiab Subsea Flowlines
Offshore ua hauj lwm muab nqi zog rau lub zog- rau- qhov hnyav piv ob zaug dhau, vim tias cov phab ntsa thickness txuag kuj txo qhov hnyav submerged thiab nteg nro. X70 nyob rau hauv Q mob, los yog qaub- kev pab cuam txawv qhov uas cov kua tsim muaj hydrogen sulfide, yog niaj hnub rau subsea sib sau ua ke kab thiab platform- mus rau - ntug dej hiav txwv kab.
Siab -Pressure Gathering Systems
Qhov twg lub taub hau siab siab tab sis txoj kab luv luv thiab tus qauv tsim yog kev saib xyuas, X70 PSL1 tseem yog qhov kev xaiv pheej yig. Nws raug nqi tsawg dua ib tonne dua PSL2, thiab qhov tsis muaj qhov yuav tsum tau kuaj xyuas thiab chav tsev -qib traceability tau txais hauv qhov kev pabcuam ntawd. Nws tsis pom zoo rau hauv qaub lossis qis - qhov kub thiab txias, thiab ciam teb yuav tsum tau sau tseg es tsis xav.
Sour Service Lines hauv Wet H₂S
ntub hydrogen sulfide tawm tsam carbon steel los ntawm hydrogen -induced cracking thiab sulfide stress corrosion cracking. X70 tuaj yeem muab tau rau cov kev pabcuam ntawd xws li X70MS lossis X70QS, nrog cov hardness kos qis dua 22 HRC, sulfur txo, thiab ob qho tib si TM0284 thiab TM0177 kuaj ntawm daim ntawv pov thawj. Lub npe qib tsis muab ib qho ntawm qhov no; nws yuav tsum tau txiav txim.
Carbon Dioxide Thauj rau CCUS
Qhov ntom ntom -theem CO₂ decompresses nyob rau hauv ib txoj kev uas txhawb nqa khiav ductile fractures ntev dua li cov pa roj carbon monoxide ua, yog li tawv thiab tawg ntes tswj tus tsim, tsis muaj zog. X65 thiab X70 yog cov qhab nia feem ntau xaiv, sim nrog Charpy thiab poob qhov hnyav tsim kua muag qhov loj me rau cov impurity profile ntawm cov kwj tshwj xeeb. 47th tsab ntawm API Spec 5L tam sim no nqa CO₂ kis tau tus mob nyob rau hauv tus qauv lub cev.
Kev xeem xa mus API 5L X70 Yeeb Nkab (Key Testing Item)
Hydrostatic Test: Ua rau txhua lub kav dej; xeem siab tsis tsawg tshaj li 1.25 npaug 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 soj ntsuam cov pob txha toughness
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 hauv Tshuag
API 5L Carbon Steel Kab Yeeb Nkab Ntim thiab Shipping
Thov ib daim ntawv rau API 5L X70 Kab Yeeb
Xa tawm sab nraud txoj kab uas hla thiab phab ntsa thickness, cov khoom specification theem thiab tus me nyuam mob, qhov ntau, thiab qhov chaw nres nkoj. Cov lus nug uas tuaj txog nrog tsib yam khoom no feem ntau yog teb nrog tus nqi ruaj khov thiab cov khoom tsim tawm ntawm thawj cov lus teb.
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 - cov roj thiab roj tsheb thauj mus los, thaum X70 tsom rau kev ua haujlwm hnyav xws li txias siab, dej hiav txwv tob, leej faj- muaj lossis seismic zones, xws li Tuam Tshoj Kazakhstan 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 txog 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; Nyob rau hauv cov nqe lus ntawm cov txheej txheem yuav tsum tau, X70 nyob rau hauv PSL2 qib muaj nruj tswj nyob rau hauv qis- kub tej yam toughness (-20℃lub caij ntuj sov tshwj xeeb ua hauj lwm Ntau tshaj los yog sib npaug rau 80J) thiab carbon sib npaug, thiab siab dua vuam nyuaj.
API 5L X70 yeeb nkab yog dab tsi?
API 5L X70 yeeb nkab yog kab yeeb nkab ua rau API Spec 5L nrog rau qhov tsawg kawg nkaus yield zog ntawm 70,000 psi, sau li 485 MPa hauv SI units. ISO 3183 thiab GB/T 9711 hu tib qib L485, thiab EN 10208-2 hu nws L485MB. Nws yog muab nyob rau hauv ob yam khoom specification theem, PSL1 thiab PSL2, raws li seamless los yog welded yeeb nkab, thiab yog siv rau high-pressure kis tau tus mob ntawm roj, natural gas thiab, txij li thaum 47th tsab ntawm tus qauv, carbon dioxide.
Qhov siab tshaj tawm lub zog ntawm API 5L X70 PSL2 yog dab tsi?
635 MPa (92,100 psi). PSL1 X70 tsis muaj qhov txwv siab tshaj plaws, tab sis PSL2 X70 yog bounded ntawm ob sab ntawm 485-635 MPa. Qhov sib thooj tensile ntau yog 570–760 MPa (82,700–110,200 psi) nrog cov txiaj ntsig - rau - tensile ratio capped ntawm 0.93. Cov ciam teb sab sauv yog dab tsi ua kom cov yeeb nkab txuas rau hauv lub tshav pob thiab tiv thaiv lub peev xwm uas muaj siab - lub zog kab yeeb nkab yog yuav rau thawj qhov chaw.
Qhov txawv ntawm X70 PSL1 thiab X70 PSL2 yog dab tsi?
PSL1 teeb tsa hauv pem teb ntawm kev tawm los thiab lub zog tensile thiab caps carbon, manganese, phosphorus thiab sulfur ntawm cov txiaj ntsig looser. PSL2 ntxiv lub zog sab sauv, lub hau 0.93 ntawm qhov tawm los- rau- tensile piv, yuav tsum tau kuaj Charpy cuam tshuam, kev txwv cov pa roj carbon sib npaug, yuav tsum tau tshaj tawm cov pa sib npaug, chav tsev- qib traceability, thiab tag nrho tsis yog - kev ntsuas kev puas tsuaj ntawm cov seam. PSL1 X70 tseem yuav rau qis dua - cov kab sib sau ua ke; Cov kab hauv lub cev thiab cov qaub lossis qis - qhov kev pabcuam kub yog PSL2. Ib qho kev txiav txim sau li API 5L X70 yam tsis muaj PSL tsis yog qhov ua tiav.
Charpy cuam tshuam dab tsi yog X70 PSL2 xav tau?
Rau X70 PSL2 yeeb nkab lub cev, API 5L Table 8 yuav tsum tau Charpy V-kev ntsuas ntsuas nrog qhov nruab nrab absorbed zog ntawm 27 J thiab tus neeg tsawg kawg nkaus ntawm 20 J ntawm tus qauv ntsuas kub ntawm 0℃. Qhov ntsuas kub qis dua thiab muaj zog dua yog feem ntau sau rau hauv qhov project specifications, piv txwv li 40 J lossis 60 J ntawm rho tawm 20 degree, tab sis cov no yog cov yuav tsum tau muab tso rau saum tus qauv es tsis yog tus qauv nws tus kheej. Welded yeeb nkab nrog rau sab nraud txoj kab uas hla ntawm 508 hli los yog ntau tshaj kuj xav tau kev poob phaus tsim kua muag nrog qhov nruab nrab shear cheeb tsam ntawm tsawg kawg yog 85%.
Txoj kev tsim khoom twg yog siv rau API 5L X70 kab yeeb nkab?
Plaub muaj ntau. Seamless yeeb nkab npog kwv yees li 60.3 hli mus rau 610 hli sab nraud txoj kab uas hla thiab raug xaiv rau me me - txoj kab uas hla siab - ua haujlwm siab. ERW lossis siab - zaus welded yeeb nkab npog ib txoj kab uas hla zoo sib xws ntawm tus nqi qis. LSAW, tsim los ntawm UOE lossis JCOE nias nrog ob npaug -sab submerged arc vuam, npog 406 mm txog 1,422 mm thiab dominates loj - kab kab kab. SSAW, tseem hu ua HSAW, yog muab kauv - tsim thiab npog cov kab uas loj tshaj plaws. Tshaj li ntawm 508 hli cov welded txoj kev sib tw ntawm tus nqi; Hauv qab no txog 219 mm seamless feem ntau yog tib txoj kev xaiv rau X70.
API 5L X70 puas tuaj yeem muab rau kev pabcuam qaub?
Yog, tab sis lub npe qib ib leeg tsis tsim nyog rau cov yeeb nkab. Cov kev pabcuam qaub xav tau PSL2 yeeb nkab xaj nrog cov qaub- pabcuam ntxiv ntawm tus qauv, ntxiv rau cov khoom siv ntawm NACE MR0175 lossis ISO 15156, hydrogen-induced cracking testing to NACE TM0284 thiab sulfide stress corrosion cracking testing to NACE TM0177. Hardness yog capped ntawm 22 HRC, los yog hais txog 250 HV10, thiab sulfur yog ib txwm tuav ntawm 0.015% siab tshaj plaws, nruj rau 0.002% lossis qis dua ntawm cov haujlwm hnyav dua. Cov khoom xa tuaj yog S suffix, muab X70MS rau thermomechanically dov los yog X70QS rau quenched thiab tempered.
Puas yog API 5L X70 haum rau CO2 kis cov kav dej?
Nws yog ib qho ntawm ob qib feem ntau xaiv rau nws, nrog rau X65. Qhov ntom ntom -theem carbon dioxide decompresses txawv ntawm cov pa roj carbon monoxide, yog li cov cuab yeej tswj tau yog tawg toughness es tsis yog lub zog ib leeg, thiab cov phab ntsa tuab tsis yog qhov hloov pauv rau kev ntes tawv. 47th tsab ntawm API Spec 5L, luam tawm rau 2 Lub Rau Hli 2026, coj cov pa roj carbon dioxide xa cov kav xa mus rau hauv tus qauv thawj zaug, uas txhais tau hais tias CO2 piping tam sim no tuaj yeem raug txiav txim tawm tsam cov kab yeeb nkab luam tawm tsis yog qhov project- tau hais tseg ib leeg.
Qhov tsab xov xwm ntawm API 5L siv rau kev txiav txim X70, 46th lossis 47th?
46th tsab, tshaj tawm rau lub Plaub Hlis 2018 nrog Errata 1 nyob rau lub Tsib Hlis 2018, tseem yog qhov kev yuav khoom rau feem ntau xaj hnub no. 47th tsab tau luam tawm rau 2 Lub Rau Hli 2026 thiab khaws ntau tshaj kaum tsib lub ntsiab lus rau kev kho dua tshiab, suav nrog cov kev xav tau ntawm kev xa cov pa roj carbon dioxide, nruj dua -frequency welded yeeb nkab tswj, qaub-kev pabcuam thiab sulfide kev nyuaj siab tawg kev sim, hydrostatic test gauge calibration, non{10}restructive evaluation, restructive thiab restructive cov ntaub ntawv. chemical element ranges. Kev tshaj tawm kev lag luam tso API Monogram ua raws hnub tim 1 Lub Xya Hli 2027; paub meej tias hnub hloov pauv rau koj qhov kev lees paub nrog API. Vim tias cov ntawv sib txawv, daim ntawv xaj yuav tsum muab npe rau ib tsab es tsis yog tus qauv nkaus xwb.
Cov ntsiab lus
X70 yog 485 MPa yam tsawg kawg nkaus yield qib uas tau yuav ntau npaum li cas rau nws sab sauv ciam teb rau hauv pem teb: PSL2 tuav yield ntawm 485-635 MPa, tensile ntawm 570-760 MPa thiab cov tawm los - rau - tensile ratio ntawm 0.93 los yog qis dua. Tus qauv qhov kev xav tau ntawm lub hauv paus yog 27 J qhov nruab nrab ntawm 0 degree, nrog kev ntsuas qhov poob qis dua 508 mm sab nraud txoj kab uas hla, thiab cov qaub- kev pabcuam khiav los ntawm PSL2, cov qaub ntxiv, NACE MR0175 lossis ISO 15156, thiab hardness tuav rau 22 HRC. 46th tsab tswj hwm niaj hnub no, 47th yuav siv rau cov khoom lag luam monogrammed ntawm 1 Lub Xya Hli 2027 ntawm kev tshaj tawm tam sim no, thiab kev txiav txim hla ciam teb yuav tsum sau cov ntawv uas lawv tau tawm tsam.
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