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    Mapaipi Omwe Anali ndi M'mimba mwake Omwe Anali ndi Mapaipi a Zitsulo

    Mapaipi Olumikizidwa Aakuluakulu Milu ya Ma Tubular a Chitsulo Chithunzi Chowonetsedwa
    • Mapaipi Omwe Anali ndi M'mimba mwake Omwe Anali ndi Mapaipi a Zitsulo
    • Mapaipi Omwe Anali ndi M'mimba mwake Omwe Anali ndi Mapaipi a Zitsulo

    Kufotokozera Kwachidule:

    Tikusangalala kuyambitsa zinthu zathu zatsopano zopangidwa ndi zitsulo, zomwe zapangidwa kuti zipereke ntchito yabwino kwambiri pazinthu zosiyanasiyana, makamaka cofferdams. Milu iyi ili ndi kapangidwe kozungulira kapena kozungulira kokhala ndi mphamvu zosayerekezeka komanso kulimba, koteteza bwino ndikuletsa kulowa kwa madzi, nthaka ndi mchenga.


    Tsatanetsatane wa Zamalonda

    Ma tag a Zamalonda

    Mapaipi achitsuloAmapangidwa pogwiritsa ntchito zipangizo zapamwamba kwambiri komanso ukadaulo wapamwamba, zomwe zimapangitsa kuti akhale odalirika kwambiri pa ntchito iliyonse yomanga. Milu iyi imagwiritsidwa ntchito kwambiri ku cofferdams ndipo kapangidwe kake kamphamvu kamatsimikizira chitetezo ndi kukhazikika komwe kumafunika pa maziko ndi ntchito zina zomanga.

    Muyezo  

    Kalasi yachitsulo

    		 Zinthu Zamankhwala (%) Katundu Wolimba Charpy

    (V notch)

    Mayeso a Zotsatira
    c Mn p s Si Zina Mphamvu Yopereka

    (Mpa)

    		 Kulimba kwamakokedwe

    (Mpa)

    		 （L0=5.65 √ S0）Mphindi Yotambasula （%）
    kuchuluka kuchuluka kuchuluka kuchuluka kuchuluka mphindi kuchuluka mphindi kuchuluka D ≤ 168.33mm D ＞ 168.3mm
     

     

     

    GB/T3091 -2008

    		 Q215A ≤ 0.15 0.25 ＜ 1.20 0.045 0.050 0.35  

     

    Kuwonjezera Nb\V\Ti motsatira 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 ＜ 0.65 0.045 0.050 0.035 235 375 15 >26
    Q235B ≤ 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    

     

     

    Ngati mukufuna kuwonjezera chimodzi mwa zinthu za Nb\V\Ti kapena kuphatikiza kulikonse kwa izo

    		 175   310   27  

    Chimodzi kapena ziwiri mwa zizindikiro za kulimba kwa

    mphamvu yokhudza mphamvu ndi malo odulira ubweya angasankhidwe.

    L555, onani muyezo.
    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 0.030 320 435 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    

    Za chitsulo cha kalasi B,

    Nb+V ≤ 0.03%;

    zachitsulo ≥ kalasi B, kuwonjezera Nb kapena V kapena zawo

    kuphatikiza, ndi Nb+V+Ti ≤ 0.15%

    		 172   310    

    (L0 = 50.8mm) kukhala

    kuwerengedwa motsatira fomula iyi:

    e=1944·A0 .2/U0 .0

    A: Malo a chitsanzo mu mm2 U: Mphamvu yochepa yokhazikika mu Mpa

    		  

    Palibe kapena chilichonse

    kapena zonse ziwiri

    zotsatira zake

    mphamvu ndi

    kumeta ubweya

    dera likufunika ngati muyezo wa kulimba.
    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
    X65 0.26 1.45 0.030 0.030   448 531
    X70 0.26 1.65 0.030 0.030   483 565

    Zathuchitoliro cholumikizidwa cha mainchesi akulusNdiwo maziko a mapaipi achitsulo awa, zomwe zimapangitsa kuti azidalirika komanso kugwira ntchito bwino. Kudzera mu njira zowotcherera mosamala komanso zowongolera khalidwe, timaonetsetsa kuti mulu uliwonse ukukwaniritsa miyezo yapamwamba kwambiri yamakampani. Mapaipi awa amapereka kusinthasintha kwapadera komanso kulimba, zomwe zimathandiza kuti mapaipi achitsulo azipirira nyengo zovuta komanso malo ovuta.

    Monga kampani yopanga zinthu zotsogola mumakampani, Cangzhou Spiral Steel Pipes Group Co., Ltd. ili ndi malo apamwamba kwambiri okhala ndi malo okwana masikweya mita oposa 350,000. Ndi mtengo wake wa katundu wokwana mayuan 680 miliyoni, timayika ndalama muukadaulo wapamwamba komanso zida kuti titsimikizire kuti zinthuzo zikuyenda bwino kwambiri. Kuphatikiza apo, antchito athu odzipereka 680 amaonetsetsa kuti chinthu chilichonse chimayang'aniridwa bwino chisanafike kwa makasitomala athu ofunikira.

    Chitoliro cha SSAW

    Fakitale yathu imabala mapaipi achitsulo okwana matani 400,000 pachaka ndipo imabala ma yuan 1.8 biliyoni. Izi zikusonyeza kudzipereka kwathu popereka chithandizo chabwino kwambiri komanso kukwaniritsa zosowa za makasitomala athu ofunikira m'deralo komanso padziko lonse lapansi.

    Mapaipi achitsuloKuphatikiza ndi mapaipi athu akuluakulu olumikizidwa ndi mainchesi awiri amapereka magwiridwe antchito abwino kwambiri, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito m'njira zosiyanasiyana. Kuwonjezera pa ma cofferdams, ma pile athu amagwiritsidwa ntchito kwambiri pomanga milatho, zomangamanga za doko ndi mapulojekiti ena am'madzi. Kapangidwe kapadera kozungulira kapena kozungulira ka ma pile awa kumatsimikizira kusunga bwino madzi ndi nthaka pamene kumapereka chimango cholimba.

    Kudzipereka kwa kampani yathu pa ntchito yabwino, yaukadaulo komanso yokhutiritsa makasitomala kumatilimbikitsa kuti tipitirize kukonza njira zathu zopangira zinthu ndikupanga njira zatsopano. Timatsatira miyezo yokhwima yowongolera khalidwe kuti tiwonetsetse kuti zinthu zathu ndi zapamwamba kwambiri komanso zikukwaniritsa kapena kupitirira zomwe mukuyembekezera.

    Powombetsa mkota,milu yachitsuloakusinthiratu makampani omanga ndi mphamvu ndi kulimba kwa chitoliro chathu chachikulu cholumikizidwa ndi mainchesi awiri. Chifukwa cha kuthekera kwawo kupirira zovuta komanso kugwiritsidwa ntchito kwawo mwapadera ku cofferdams, milu iyi imapereka chitetezo ndi chithandizo chosayerekezeka. Gwirizanani ndi Cangzhou Spiral Steel Pipes Group Co., Ltd. kuti mupeze zinthu zapamwamba kwambiri zomwe zimakulitsa mapulojekiti anu ndikupereka mayankho okhalitsa.

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