API 5L X120 DSAW Pipe

API 5L X120 DSAW Pipe yog dab tsi?

API 5L X120yog ib qho ultra-siab- zog carbon steel qib raws li API 5L specification.

X120:Qhia txog qhov tsawg kawg nkaus yield zog ntawm120,000 psi (827 MPa).

DSAW (Ob chav Submerged Arc Welded):Hais txog cov txheej txheem vuam qhov twg cov yeeb nkab yog welded ob sab hauv thiab sab nraud siv cov txheej txheem submerged arc. Rau X120, qhov no feem ntau yogLSAW(Longitudinal) siv high - zoo steel daim hlau.

Lub hom phiaj:Nws tso cai rau kev ua haujlwm siab dua lossis txo cov phab ntsa thickness piv rau X70 lossis X80, txo qis tag nrho cov hnyav ntawm cov hlau xav tau rau mega- tej yaam num.

Txo qhov project steel qhov hnyav los ntawm 30% +! API 5L X120 ultra- lub zog siab tso cai rau cov phab ntsa nyias nyias, txiav cov khoom siv thiab cov nqi thauj khoom.Tau txais koj txoj kev npaj ua kom zoo tam sim no.

Chemical Composition thiab Mechanical Properties (PSL2)

Chemical Composition (Hom rau X120)

X120 yuav tsum muaj qhov nyuaj micro- sib xyaw tsim thiab TMCP (Thermomechanical Control Process) kom ua tiav lub zog yam tsis muaj nkig.

Mechanical Properties

API 5L X120 DSAW Pipe Specification

Dimensional Tswj

X120 cov kav dej muaj qhov ua tau zoo nruj heev los xyuas kom meej kev sib raug zoo thaum lub sijhawm vuam:

Txoj kab uas hla Tolerance:± 0.5% ntawm OD.

Phab ntsa Thickness:± 5% txog 10% nyob ntawm WT.

Tawm ntawm - ntawm - roundness:Hauv 1% ntawm OD.

Kev ncaj:Tsawg dua lossis sib npaug li 0.2% ntawm tag nrho qhov ntev.

Manufacturing Process (LSAW/DSAW)

Ultrasonic phaj:100% UT tshuaj xyuas ntawm lub siab - lub zog phaj.

Ntug Milling:Beveling lub phaj npoo rau vuam.

Kev tsim:SivJCOE(J-shape, C-shape, O-shape, Expansion) lossis UOE txheej txheem.

Tack Welding:Ib ntus CO2 shielded vuam.

Internal DSAW:Submerged arc vuam los ntawm sab hauv.

External DSAW:Submerged arc vuam los ntawm sab nraud.

Kev nthuav dav:Txias mechanical expansion los txhim kho qhov tseeb qhov tseeb thiab txo qhov kev ntxhov siab sab hauv.

Nto API 5L X120 DSAW Pipe

Internal Surface:Yuav tsum tau du, tsis muaj nplai, thiab feem ntau coated nrog epoxy los txo kev sib txhuam (txo qis).

Sab nrauv nto:Yuav tsum tsis txhob raug mob xws li slivers, tawg, lossis khawb tob.

Kev npaj nto:Feem ntau sandblasted rau Sa 2.5 qib ua ntej los tiv thaiv -corrosion txheej (3LPE/FBE) yog siv.

Kev xa khoom ntawm API X120

M (Thermomechanical Rolled / Tsim):Lub zog yog muab los ntawm lubTMCPtxheej txheem ntawm lub phaj ntxiv rau kev tswj kom txias.

Kev xa khoom:Feem ntau hauv"M" condition(eg, API 5L X120M). Nco ntsoov tias X120 tsis tuaj yeem ua tau zoo lossis ib txwm ua kom sov- kho tom qab vuam yam tsis poob nws lub zog.

Impact Test ntawm API 5L X120 Pipeline

Txij li thaum X120 yog ultra- lub zog siab, lub zog yog qhov tseem ceeb los tiv thaiv kev tawg tawg.

Test Hom:Charpy V-Notch (CVN) Impact Test.

Kub:Feem ntau kuaj ntawm0 degree, -10 degree, lossis -20 degreenyob ntawm qhov xav tau ntawm qhov project.

Lub zog xav tau: Significantly higher than X70, often requiring >150J txog 250J (ntev) kom ntseeg tau tias muaj peev xwm ntes tau.

DWTT (Drop Weight Tear Test):Yuav tsum tau ua rau PSL2 kom paub meej qhov feem pua ​​ntawm cov cheeb tsam ntawm qhov kub thiab txias.

NDT (Tsis yog -Kev kuaj kev puas tsuaj)

UT (Ultrasonic Testing):100% ntawm weld seam thiab cov yeeb nkab lub cev.

X-Ray (Xov tooj cua):Siv rau qhov xaus weld thiab xyuas cov txiaj ntsig UT.

Magnetic Particle (MPI):Txhawm rau kuaj xyuas qhov tawg ntawm cov yeeb nkab kawg.

Hydrostatic Test:100% kev soj ntsuam ntawm cov kev ntxhov siab feem ntau tshaj 90% ntawm cov khoom muaj zog.

Cov yeeb nkab kawg

Hom:Bevelled xaus yog tus qauv.

Bevel Lub kaum sab xis:30℃(+5℃, -0 degree) nrog lub hauv paus ntsej muag ntawm 1.6mm (± 0.8mm).

Kev tiv thaiv:Siab - cov kav dej muaj zog yuav tsum muaj qhov kawg ntawm kev tiv thaiv los ntawm hnyav- lub kaus mom lub luag haujlwm los tiv thaiv cov nicks uas tuaj yeem ua raws li kev ntxhov siab.

Ntim thiab Marking

Marking:Txhua lub yeeb nkab yuav tsum tau stenciled nrog: Chaw Tsim Tshuaj Lub Npe, API 5L Qib X120 PSL2, OD, WT, Ntev, Kub Naj Npawb, thiab Tube Number.

Ntim:

Cov kav dej feem ntau raug xa musliab qabnrog ib tug tiv thaiv varnish los yogcoated(eg, 3 LPE).

Xaus muaj kev tiv thaiv nrogyas los yog hlau kaus mom.

Hexagonal bundles (rau me diameters) los yog xoob rau cov kab uas loj dua.

Kev nqa yog ua tiav siv cov nylon dav dav los tiv thaiv kev puas tsuaj rau lub siab - lub zog steel.

FAQ

Dab tsi qib yeeb nkab yog API 5L?

API 5L yog ib qho kev qhia tshwj xeeb rau kab yeeb nkab steel es tsis yog ib qib tshwj xeeb; nws encompasses ntau yam ntawm cov qib, xws li lub hauv paus Qib B mus rau siab -lub zog "X" series (xws li X42,X52, X65, X70, thiab txuas mus rau ultra-siab- zog X120). Hauv cov ntsiab lus no, tus lej tom qab "X" qhia txog cov yeeb nkab qhov kev tawm dag zog tsawg kawg nkaus ( ntsuas ntau txhiab phaus ib square inch -piv txwv li, X70 signifies 70,000 psi); tus lej siab dua qhia tau tias muaj zog ntau dua thiab muaj peev xwm tiv taus qhov siab dua. Tsis tas li ntawd, cov qhab nia no tau muab faib ua ob theem Cov Khoom Qhia Tshwj Xeeb-PSL1 thiab PSL2- raws li qhov nruj ntawm lawv cov kev xav tau, yog li ua tau raws li cov kev xav tau sib txawv xws li cov qauv kev thauj mus los rau kev xav tau, ib puag ncig siab.

Qhov txawv ntawm API yeeb nkab thiab ASTM yeeb nkab yog dab tsi?

Qhov txawv ntawmAPI cevthiabASTM cevlies feem ntau nyob rau hauv lawvxav thov, kev lag luam tsom, thiabtechnical nruj.

Thaum lawv feem ntau saib zoo ib yam thiab qee zaum sib tshooj, lawv tau tswj hwm los ntawm cov koom haum sib txawv thiab tsim rau ntau qhov chaw.

Cim npe nrov: api 5l x120 dsaw yeeb nkab, Tuam Tshoj api 5l x120 dsaw yeeb nkab manufacturers, lwm tus neeg