Engineering Excellence nrog API 5L X42 PSL2 Seamless Pipes
API 5L Qib X42, npe asL290 raws li ISO 3183, yog qib siab -kuaj kab yeeb nkab qib tsim los rau kev thauj mus los ntawm cov roj av thiab cov nkev. Thaum teev raws liPSL2 (Product Specification Level 2), cov yeeb nkab ua tau raws li cov txheej txheem kev xa khoom nruj dua li tus qauv PSL1. Seamless X42 PSL2 cov kav dej muab qhov kev ruaj ntseg zoo tshaj plaws rau siab - cov kab sib kis, muab cov qauv kev ncaj ncees thiab kev coj tus cwj pwm zoo hauv qhov xav tau ib puag ncig.
Mechanical Properties thiab PSL2 Thresholds
Tus yam ntxwv txhais ntawm X42 PSL2 yog nws nruj me ntsis ua raws li txhua yam pib. PSL2 tswj hwm cov kev txwv tshwj xeeb ntawm cov txiaj ntsig - rau - qhov sib piv tensile thiab yuav tsum tau ua qhov yuav tsum tau ua qhov kev sim ua kom tsis txhob muaj kev puas tsuaj loj.
| Metric | API 5L X42 PSL2 Yuav Tsum Tau |
|---|---|
| Yield zog | 290-495 MPa (42,100-71,800 psi) |
| Tensile zog | 415-655 MPa (60,200-95,000 psi) |
| Yield-rau-tensile ratio | 0.93 max |
| Impact zog (CVN) | Yuav tsum tau ntawm 0℃lossis -20 degree |
Chemical Composition thiab Weldability
X42 PSL2 seamless kav yog tsim nrog ib tug sib npaugcarbon equivalent (CEV). Cov chemistry tau ua kom zoo dua los muab kev ua haujlwm zoo tshaj plaws hauv kev lag luam thaum tuav lub zog uas yuav tsum tau ua rau siab - kev pabcuam siab. Qhov kev sib npaug no yog qhov tseem ceeb rau kev tiv thaiv qhov txias txias hauv qhov cua sov- thaj chaw cuam tshuam (HAZ) thaum lub sij hawm siv cov raj xa dej.
Kev lees paub zoo thiab NDT Cov Cai
Tsis zoo li PSL1, txhua qhov ntev ntawm API 5L X42 PSL2 seamless yeeb nkab yuav tsum tau ua tiav tsis yog - kev tshuaj xyuas kev puas tsuaj, feem ntau 100% automatedUltrasonic (UT) lossis radiographic (RT) kuajlos xyuas kom meej xoom sab hauv los yog nto defects. Tag nrho qhov yuav tsum tau taug qab los ntawm cov hlau yaj mus rau cov yeeb nkab tiav yog lub cim ntawm PSL2, muab cov neeg ua haujlwm ntseeg siab rau cov khoom siv hauv paus thiab kev ua haujlwm.
Kev Ntsuas Hydrostatic
Txhua cov yeeb nkab yuav tsum tau kuaj hydrostatically ntawm lub zeb rau lub siab uas tsim kom muaj kev ntxhov siab ntawm fiber ntau90% ntawm qhov tsawg kawg nkaus yield zog, txheeb xyuas qhov xau- nruj ua ntej xa khoom.
Cov lus nug nquag
Puas yog X42 PSL2 muaj zog dua X42 PSL1?
Qhov tsawg kawg nkaus lub zog tawm los yog tib yam ntawm 290 MPa, tab sis PSL2 muaj qhov txwv nruj nruj rau kev tawm los thiab lub zog tensile los xyuas kom meej qhov kev ua tau zoo.
X42 PSL2 puas tuaj yeem siv rau kev pabcuam qaub?
Tsuas yog txiav txim raws li X42QS lossis X42MS, uas suav nrog HIC thiab SSC xeem ntxiv raws li NACE MR0175 / ISO 15156.
Qhov kev pabcuam siab tshaj plaws rau X42 yeeb nkab yog dab tsi?
Nws feem ntau ntsuas rau kev pabcuam txog 200℃(392℃F); kub siab dua yuav tsum tau tshwj xeeb high - cua sov alloy qib.
Vim li cas ho xaiv seamless rau PSL2 sib sau ua ke kab?
Seamless manufacturing tshem tawm cov longitudinal weld seam, lub peev xwm focal point rau kev ntxhov siab corrosion thiab qaug zog tawg nyob rau hauv siab - siab sib sau ua ke systems.
PSL2 puas yuav tsum tau kuaj hydrostatic?
Yog lawm. Txhua cov yeeb nkab yog kuaj hydrostatically ntawm lub zeb kom muaj kev ntxhov siab fiber ntau ntawm tsawg kawg 90% ntawm qhov tsawg kawg nkaus tawm los.
Yog vim li cas qhov yield - rau - tensile ratio capped ntawm 0.93?
Nws lav ductile deformation ua ntej rupture, muab lus ceeb toom ua ntej kev puas tsuaj tsis ua hauj lwm hauv kev pabcuam siab.
