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    Cov txiaj ntsig ntawm A252 qib 3 kav hlau steel siv hauv phwj dej thiab roj av pipeline siv

    Cov txiaj ntsig ntawm A252 qib 3 kav hlau steel siv hauv phwj dej thiab roj av pipeline siv featured duab
    • Cov txiaj ntsig ntawm A252 qib 3 kav hlau steel siv hauv phwj dej thiab roj av pipeline siv
    • Cov txiaj ntsig ntawm A252 qib 3 kav hlau steel siv hauv phwj dej thiab roj av pipeline siv

    Cov lus piav qhia luv luv:

    A252 Qib 3 Hlau Yeeb Nkab, tseem hu uaMuab kauv submerged arc yeeb nkab, yog qhov kev xaiv nrov rau lim dej thiab roj pipeline roj. Cov kav dej no yog tsim los walland kawg cov xwm txheej thiab muaj ntau yam zoo hauv cov ntawv thov no.


    Khoom Qhia Qhia

    Khoom Ntawv

    Ib qho ntawm cov txiaj ntsig tseem ceeb ntawmQib A252 3 tus yeeb nkab steel yog nws qhov tshwj xeeb muaj zog thiab lub zog. Cov kav dej no yog ua los ntawm cov hlau zoo thiab yog cov tiv taus tsis tshua muaj corrosion, hnav thiab cuam tshuam. Qhov no ua rau lawv zoo tagnrho rau kev siv hauv lim dej kav dej uas lawv tuaj yeem raug cov tshuaj uas xeb thiab cov khoom hnyav. Ib qho ntxiv, lawv lub zog thiab kav ntev ua rau lawv haum rau kev siv hauv cov roj pipeline kev tsim kho, raws li lawv yuav tsum witactand siab thiab hloov ib puag ncig cov xwm txheej.

    Lub hom phiaj  Qib hlau Tshuaj txhuam khoom (%) Cov Cuab Yeej Tensile Tus ncej(V nepch)

    Cuam Tshuam
    c Mn p s Si Lwm Paib lub zog(MPa) Lub zog tensile(MPa) (L0 = 5.65 √ab nqi (%)
    tus zuag tus zuag tus zuag tus zuag tus zuag lub min tus zuag lub min tus zuag D ≤ 168.3mm D> 168.3mm
      

     

    GB / T3091 -2008

    		 Q215a ≤ 0.15 0.25 <1.20 0.045 0.050 0.35   

    Ntxiv NBVTI raws li GB / T1591-94

    		 215   335   15 31  
    Q215B ≤ 0.15 0.25-0.55 0.045 0.045 0.035 215 335 15 31
    Q235A ≤ 0.22 0.30 <0.305 0.045 0.050 0.035 235 375 15 26
    Q235b Ent 0.20 0.30 ≤ 1.80 0.045 0.045 0.035 235 375 15 26
    Q295A 0.16 0.80-1.50 0.045 0.045 0.55 295 390 13 > 23
    Q295B 0.16 0.80-1.50 0.045 0.040 0.55 295 390 13 > 23
    Q345a 0.20 1.00-1.60 0.045 0.045 0.55 345 510 13 > 21
    Q345b 0.20 1.00-1.60 0.045 0.040 0.55 345 510 13 > 21
      

     

     

    GB /

    T9711-

    2011

    (PSL1)

    		 L175 0.21 0.60 0.030 0.030     

     

    Yeem ntxiv kev ntxiv ib qho ntawm NBVTI cov ntsiab lus lossis kev sib xyaw ntawm lawv

    		 175   310   27  Ib lossis ob ntawm cov tawv tawv indexof

    Kev Cuam Tshuam Lub Zog thiab Shearing Thaj Tsam yuav raug xaiv. Rau

    L555, saib tus qauv.
    L210 0.22 0.90 0.030 0.030 210 335 25
    L245 0.26 1.20 0.030 0.030 245 415 21
    L290 0.26 1.30 0.030 0.030 290 415 21
    L320 0.26 1.40 0.030 0.030 320 Yam 435 20
    L360 0.26 1.40 0.030 0.030 360 460 19
    L390 0.26 1.40 0.030 0.030 390 390 18
    L415 0.26 1.40 0.030 0.030 415 520 17
    L450 0.26 1.45 0.030 0.030 450 535 17
    L485 0.26 1.65 0.030 0.030 485 570 16
      

     

     

    API 5L (PSL 1)

    		 A25 0.21 0.60 0.030 0.030    Rau qib b steel,

    NB + v ≤ 0.03%;

    Rau Hlau ≥ qib B, xaiv ntxiv NB lossis V lossis lawv

    Ua ke, thiab NB + V + TI ≤ 0.15%

    		 172   310    (L0 = 50.8mm) yuav tsum

    xam raws li cov qauv hauv qab no:

    e = 194444 .2 / U0 .0

    A: Thaj tsam ntawm cov qauv hauv MM2 U: Tsawg tsawg ntawm Tensile lub zog hauv Mpa

    		  Tsis muaj ib qho

    lossis ob qho tib si

    Qhov cuam tshuam

    Zog Thiab

    Lub shearing

    Thaj chaw yog qhov yuav tsum tau ua raws li cov txheej txheem tawv tawv.
    A 0.22 0.90 0.030 0.030   207 331
    B 0.26 1.20 0.030 0.030   241 414
    X42 0.26 1.30 0.030 0.030   290 414
    X46 0.26 1.40 0.030 0.030   317 434
    X52 0.26 1.40 0.030 0.030   359 455
    X56 0.26 1.40 0.030 0.030   386 490
    X60 0.26 1.40 0.030 0.030   414 517
    X 65 0.26 1.45 0.030 0.030   448 531
    X70 0.26 1.65 0.030 0.030   483 565

    Lwm qhov zoo dua ntawm A252 qib 3 hlau yeeb yog nws cov versatility. Cov kav dej no muaj nyob rau ntau qhov ntau thiab tsawg thiab thickinges, ua rau lawv haum rau ntau cov ntawv thov. Txawm tias lub tsev me meLimer KabLos yog cov roj av loj loj, A252 qib 3 cov yeeb nkab Steel tuaj yeem yooj yim kho kom tau raws li kev xav tau tshwj xeeb. Txuas ntxiv, cov kav dej no tuaj yeem ua tauHOLLOW-NTU-NTU COV KAUV TXUJ CI PIPES, txuas ntxiv nthuav lawv siv hauv kev tsim kho cov dej num.

    Ntxiv rau nws lub zog thiab versatility, A252 qib 3 hlau kuj tseem muaj kev paub rau nws cov nqi-ua tau zoo. Cov kav dej no yog qhov yooj yim rau nruab thiab xav tau kev txij nkawm tsawg kawg nkaus, txo qis tag nrho cov nqi. Tsis tas li ntawd, lawv lub neej kev pabcuam ntev thiab corrosion tsis ntseeg tias lawv muab qhov kev xa rov qab los ntawm kev nqis peev rau Serer thiabRoj Yeeb Nkab txoj kabTej num ua tej yaam num.

    Ssaw yeeb nkab

    Lwm qhov txiaj ntsig zoo ntawm A252 qib 3 hlau yeeb yog nws qhov sib xyaw nrog ntau txoj kev tsim qauv. Cov kav dej no tuaj yeem ntsia tau siv cov qauv kev khawb lossis kev tsis sib xws xws li kab rov tav kev sib dhos, yeeb nkab jacking lossis micro-qhov. Qhov kev hloov pauv no tso cai rau kev ua tau zoo thiab raug teeb tsa zoo nyob rau hauv ib txoj kev nyuaj ib puag ncig, suav nrog cov chaw hauv nroog, cov dej uas tsis muaj dej.

    Zuag qhia tag nrho, A252 qib 3 cov yeeb nkab steel hlau muaj ntau yam zoo rau cov lim dej thiab roj av ua haujlwm. Lawv lub zog, durability, versatility thiab nqi-ua hauj lwm ua rau lawv zoo rau cov ntawv thov no. Txawm hais tias siv hauv lim dej lossis roj pipeline siv, cov kav dej no muab cov txiaj ntsig zoo thiab muaj nuj nqis. Raws li qhov tshwm sim, lawv tau daws cov kev xaiv rau engineers thiab cov neeg cog lus nrhiav ruaj thiab kev txhim khu kev qha cov kev daws teeb meem.

  • Yav dhau los:
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    • Sau koj cov lus ntawm no thiab xa mus rau peb

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