API 5L X65 Pipe yog dab tsi?
API 5L X65 yog qib siab - cov kab yeeb nkab uas tau luam tawm los ntawm American Petroleum Institute. Tsab ntawv X ua raws li 65 qhia txog qhov tsawg kawg nkaus yield zog ntawm 65,000 psi, kwv yees li 448 MPa, thiab qib sib raug raws li L450 kev xaiv siv hauv ISO 3183. Cov yeeb nkab ntawm qib no yog tsim los ua seamless, HFW / ERW, LSAW thiab SSAW1 cov khoom lag luam ob qib thiab raug txiav txim siab hauv cov khoom lag luam PSL2. Ob theem sib koom tib lub zog nominal tab sis sib txawv ntawm cov tshuaj txwv, kuaj zaus thiab tus nqi ntawm cov ntaub ntawv pov thawj ntxiv uas yuav tsum tau ua ua ntej xa khoom.
Vim nws lub zog -rau- qhov hnyav piv, X65 kab yeeb nkab tso cai rau cov phab ntsa me me dua li Qib B lossis X42 rau tib lub siab tsim thiab siv dav rau ntev - kis tau tus mob nyob qhov twg ob qho tib si siab thiab tonnage teeb meem.
Chemical Composition Requirements
| Qib | Qib | C max,% | Mn max,% | P max,% | S max,% |
|---|---|---|---|---|---|
| X65 | PSL1 | 0.26 | 1.45 | 0.030 | 0.030 |
| X65 | PSL2 | 0.22 | 1.65 | 0.025 | 0.015 |
Cov duab saum toj no yog qhov siab tshaj plaws uas tau teev tseg los ntawm API 5L rau ob qib khoom tshwj xeeb. PSL2 tseem tso cai rau microalloying nrog niobium, vanadium thiab titanium, thiab cov pa roj carbon sib npaug yog tswj kom qhov chaw vuam tseem ua tau raws li qhov muaj zog. Lower sulfur hauv PSL2 kuj txhim kho kev tiv thaiv hydrogen-induced cracking nyob rau hauv ntub qaub pab.
Mechanical Properties
| Qib | Yield zog Rt0.5 min | Tensile zog Rm | Qhov ratio Rt0.5/Rm |
|---|---|---|---|
| PSL1 | 65,300 psi (448 MPa) | 77,500 psi (535 MPa) min | Tsis tau teev tseg |
| PSL2 X65Q / X65M | 65,300 psi (448 MPa) min, 87,000 psi (600 MPa) max | 77,600 psi (535 MPa) min, 110,200 psi (760 MPa) max | 0.93 max |
PSL2 yeeb nkab xa nrog qhov tsawg kawg nkaus elongation xam los ntawm cov qauv siv tau hauv API 5L, thiab Charpy V- qhov ntsuas qhov cuam tshuam yog ua los ntawm qhov ntsuas kub pom zoo ntawm cov neeg yuav khoom thiab cov chaw tsim khoom. Qhov yuav tsum tau muaj kev cuam tshuam, ua ke nrog kev sib tw nruj dua thiab cov khoom tawm los ntawm - rau - tensile ratio txwv, yog vim li cas vim li cas PSL2 cov khoom raug xaiv rau qis - kub txoj kev thiab rau cov kav dej uas tawg puas yuav tsum tau pom.
Dimensions Ib txwm tsim
Seamless: sab nraud txoj kab uas hla 21.3-508 hli, phab ntsa thickness 2-60 hli
HFW / ERW: sab nraud txoj kab uas hla 21.3-508 hli, phab ntsa thickness 3.2-15.9 hli
LSAW: sab nraud txoj kab uas hla 406.4-1422 hli, phab ntsa thickness 6.4-44.5 hli
SSAW: sab nraud txoj kab uas hla 219.1-2540 hli, phab ntsa thickness 5.4-25.4 hli
Length yog ib txwm muab raws li random 6-12 m, los yog raws li ib tug ntev ntev thaum lub project hu rau nws. Tolerances ntawm txoj kab uas hla, phab ntsa thickness, ovality thiab straightness ua raws li API 5L, thiab txhua lub yeeb nkab nqa cov qib, qhov loj, kub tus naj npawb thiab specification theem nyob rau hauv lub stencil cim.
Tej kev siv
X65 yeeb nkab yog siv rau onshore thiab offshore roj thiab roj sib sau ua ke thiab xa cov kab, tsim - dej thiab txhaj tshuaj, thiab siab - qhov chaw nres tsheb siab. Qhov twg cov khoom nruab nrab yog ntub dej thiab muaj hydrogen sulphide, cov khoom siv feem ntau raug txiav txim rau PSL2 nrog kev tswj cov pa roj carbon sib npaug thiab tom qab ntawd tsim nyog tiv thaiv cov kev pabcuam qaub ntawm ISO 15156 kom cov tawv tawv thiab tshuaj lom neeg txwv rau qhov chaw pabcuam raug hwm. Cov qib kuj yog siv rau kev siv cov qauv thiab piling qhov twg muaj lub zog tawm los zoo nrog cov weldability zoo.
Kev xaiv thiab vuam cov ntsiab lus
Paub meej tias PSL1 lossis PSL2 tau teev tseg. PSL1 yog txaus rau tus qauv kis tau tus mob lub luag hauj lwm thiab dav dav qis- kev pabcuam siab; PSL2 yog qhov kev xaiv ib txwm muaj rau kev pabcuam qaub thiab qis -kub khiav.
Thov qhov ntsuas qhov ntsuas kub thiab nqus lub zog kom meej meej, vim tias tib qib tuaj yeem muab tau raws li qhov xav tau sib txawv toughness.
Txheeb xyuas qhov kev xa khoom, xws li tswj dov lossis thermo- tshuab dov, vim nws cuam tshuam rau ob qho tib si qhov ua tiav thiab cov khoom siv hluav taws xob tau txais thaum lub sijhawm vuam.
Cov txheej txheem vuam tsim nyog yuav tsum ua raws li API 1104 lossis ISO 13847, nrog rau kev siv ua ntej raws li qhov yuav tsum tau ua los ntawm cov txheej txheem tsim nyog thiab cov khoom siv tau zoo sib xws rau qib.
Rau kev pabcuam qaub, txheeb xyuas qhov kev txwv hardness hla qhov vuam thiab cua sov- thaj tsam cuam tshuam ua ntej kev tsim vuam pib.
FAQ
Q: X65 txhais li cas hauv API 5L X65 yeeb nkab?
Qhov kev xaiv qhia tau hais tias qhov tsawg kawg nkaus tawm lub zog ntawm 65,000 psi, uas yog kwv yees li 448 MPa. Tib theem zog yog hu ua L450 hauv ISO 3183.
Q: Qhov txawv ntawm PSL1 thiab PSL2 rau qib no yog dab tsi?
PSL1 qhia txog ib txheej ntawm cov tshuaj lom neeg thiab cov khoom siv nrog cov kev sim niaj hnub. PSL2 ntxiv nruj dua cov pa roj carbon, phosphorus thiab sulfur txwv, qhov siab tshaj plaws tawm los - rau - tensile ratio, yuav tsum tau kuaj qhov cuam tshuam thiab ntau dua tsis yog- pov thawj puas tsuaj.
Q: Qhov txawv ntawm X65Q thiab X65M yog dab tsi?
Ob leeg yog PSL2 xa khoom ntawm tib qib zog. Qhov kev xa khoom sib txawv, thiab cov lus xaus qhia txog kev dov thiab kev kho cua sov txoj kev pom zoo nrog cov chaw tsim khoom, uas cuam tshuam rau qhov toughness thiab weldability.
Q: X65 yeeb nkab puas tuaj yeem siv rau hauv kev pabcuam qaub?
Yog lawm, muab cov yeeb nkab raug txiav txim rau PSL2 nrog cov tshuaj tsim nyog thiab kev tswj xyuas hardness thiab cov khoom tsim nyog rau qhov tshwj xeeb hydrogen sulphide ib nrab siab thiab pH ntawm qhov chaw pabcuam.
Q: Txoj kev tsim khoom twg yuav tsum tau xaiv, seamless lossis welded?
Seamless yog feem ntau rau me me diameters thiab siab siab, thaum LSAW thiab SSAW yog ib txwm rau loj - txoj kab uas hla. Qhov kev xaiv nyob ntawm txoj kab uas hla, phab ntsa thickness, toughness yuav tsum tau thiab qhov project muaj.
Q: Cov yeeb nkab tau muab qhab nia thiab cim li cas?
Txhua qhov ntev yog cim nrog cov chaw tsim khoom, qib kev qhia tshwj xeeb, qib, sab nraud txoj kab uas hla, phab ntsa tuab, tus naj npawb ntawm cov cua sov thiab cov qauv tsim nyog kom traceability rau daim ntawv pov thawj zeb kuaj.
