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    Izinzuzo zamapayipi ensimbi e-A252 Grade 3 Asetshenziswa Ekwakhiweni Kwepayipi Lendle kanye Nokwakhiwa Kwepayipi Lophethiloli

    Izinzuzo zamapayipi ensimbi e-A252 Grade 3 Asetshenziswa Kumapayipi Endle kanye Nokwakhiwa Kwephayiphi Lephethiloli Isithombe Esifakiwe
    • Izinzuzo zamapayipi ensimbi e-A252 Grade 3 Asetshenziswa Ekwakhiweni Kwepayipi Lendle kanye Nokwakhiwa Kwepayipi Lophethiloli
    • Izinzuzo zamapayipi ensimbi e-A252 Grade 3 Asetshenziswa Ekwakhiweni Kwepayipi Lendle kanye Nokwakhiwa Kwepayipi Lophethiloli

    Incazelo emfushane:

    Ipayipi lensimbi i-A252 Grade 3, elaziwa nangokuthiipayipi le-arc elingaphansi kwamanzi elisontekile, kuyisinqumo esithandwayo sokwakhiwa kwepayipi lendle kanye nowoyela.Lawa mapayipi enzelwe ukumelana nezimo ezimbi kakhulu futhi anikeze izinzuzo eziningi kulezi zicelo.


    Imininingwane Yomkhiqizo

    Omaka bomkhiqizo

    Enye yezinzuzo ezibalulekile zeIpayipi lensimbi i-A252 yeBanga lesi-3 amandla ayo angavamile kanye nokuqina.Lawa mapayipi enziwe ngensimbi yezinga eliphezulu futhi amelana ngokwedlulele nokugqwala, ukuguga kanye nomthelela.Lokhu kuzenza zibe zilungele ukusetshenziswa emapayipini endle lapho zingachayeka khona ezintweni ezigqwalayo kanye nemithwalo esindayo.Ukwengeza, amandla abo nokuqina kwawo kuwenza afanelekele ukusetshenziswa ekwakhiweni kwamapayipi kawoyela, njengoba kufanele amelane nokucindezela okukhulu nokushintsha kwezimo zemvelo.

    Okujwayelekile  Ibanga Lensimbi Amakhemikhali (%) I-Tensile Property U-Charpy(V inothi)

    Ukuhlolwa Komthelela
    c Mn p s Si Okunye Isivuno Amandla(Mpa) Amandla Okuqina(Mpa) (L0=5.65 √ S0 (iminithi Lokukala Lokunwebeka) (%)
    ubuningi ubuningi ubuningi ubuningi ubuningi imiz ubuningi imiz ubuningi D ≤ 168.33mm D ＞ 168.3mm
      

     

    I-GB/T3091 -2008

    		 Q215A ≤ 0.15 0.25 ＜ 1.20 0.045 0.050 0.35   

    Ingeza i-NbVTi ngokuvumelana ne-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/

    I-T9711-

    2011

    (PSL1)

    		 L175 0.21 0.60 0.030 0.030     

     

    Uma ukhetha ukungeza enye yezinto ze-NbVTi nanoma iyiphi inhlanganisela yazo

    		 175   310   27  Inkomba eyodwa noma ezimbili zokuqina

    amandla omthelela kanye nendawo yokugunda ingakhethwa.Ngoba

    L555, bona indinganiso.
    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
      

     

     

    I-API 5L (PSL 1)

    		 A25 0.21 0.60 0.030 0.030    Ngensimbi yebanga B,

    I-Nb+V ≤ 0.03%;

    okwensimbi ≥ ebangeni B,uyazikhethela ukwengeza i-Nb noma i-V noma yabo

    inhlanganisela, kanye ne-Nb+V+Ti ≤ 0.15%

    		 172   310    (L0=50.8mm) ukuba

    kubalwe ngokwefomula elandelayo:

    e=1944·A0 .2/U0 .0

    A: Indawo yesampula ku-mm2 U: Amandla amancane okubamba acacisiwe ku-Mpa

    		  Akukho noma okunye

    noma kokubili

    umthelela

    amandla kanye

    ukugunda

    indawo iyadingeka njengombandela wokuqina.
    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

    Enye inzuzo yepayipi yensimbi ye-A252 yeBanga lesi-3 ukuguquguquka kwayo.Lawa mapayipi atholakala ngobukhulu obuhlukahlukene nobukhulu, okwenza afanelekele ukusetshenziswa okuhlukahlukene.Ukuthi ukwakha encaneumzila wendlenoma ipayipi elikhulu likawoyela, ipayipi lensimbi i-A252 Grade 3 lingenziwa ngokwezifiso kalula ukuze lihlangabezane nezidingo ezithile zephrojekthi.Ukwengeza, lawa mapayipi angenziwaamapayipi esakhiwo anengxenye engenalutho, bandise ukusetshenziswa kwazo emisebenzini yokwakha.

    Ngaphezu kokuqina nokuguquguquka, ipayipi lensimbi i-A252 Grade 3 liyaziwa nangokubiza kwalo.Lawa mapayipi kulula ukuwafaka futhi adinga ukulungiswa okuncane, okunciphisa izindleko zephrojekthi.Ukwengeza, impilo yabo ende yesevisi kanye nokumelana nokugqwala kuqinisekisa ukuthi bahlinzeka ngembuyiselo eqinile yokutshalwa kwezimali kwendle kanyeipayipi lamafutha umugqaamaphrojekthi wokwakha.

    Ipayipi le-SSAW

    Enye inzuzo ephawulekayo yepayipi yensimbi ye-A252 yeBanga lesi-3 ukuhambisana kwayo nezindlela ezihlukahlukene zokwakha.Lawa mapayipi angafakwa kusetshenziswa izindlela zendabuko zokumba noma izindlela ezingenazintambo ezifana nokubhoboza okuqondile, ukucwiliswa kwamapayipi noma i-micro-tunnel.Lokhu kuvumelana nezimo kuvumela ukufakwa okuphumelelayo nokungabizi ezindaweni eziningi eziyinselele, okuhlanganisa izindawo zasemadolobheni, imigwaqo yamanzi kanye nezindawo ezizwelayo kwemvelo.

    Sekukonke, ipayipi lensimbi i-A252 yeBanga lesi-3 linikeza izinzuzo ezihlukahlukene ekwakhiweni kwepayipi lendle kanye ne-petroleum.Amandla azo, ukuqina, ukuguquguquka kanye nokusebenza kahle kwezindleko kuzenza zilungele lezi zinhlelo zokusebenza ezinzima.Kungakhathaliseki ukuthi asetshenziswa ekwakhiweni kwamapayipi endle noma kawoyela, lawa mapayipi ahlinzeka ngokusebenza okuthembekile kanye nenani lesikhathi eside.Ngenxa yalokho, zihlala ziyisixazululo sokuzikhethela konjiniyela nosonkontileka abafuna izixazululo zamapayipi ezihlala isikhathi eside nezithembekile.

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