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    Ipayipi Lensimbi Ehlanganisiwe Ejikelezayo Yamandla Nokusebenza Kahle Okungenakuqhathaniswa I-ASTM A252

    Ipayipi Lensimbi Ehlanganisiwe Ejikelezayo Yamandla Nokusebenza Kahle Okungenakuqhathaniswa Isithombe Esifakiwe se-ASTM A252
    • Ipayipi Lensimbi Ehlanganisiwe Ejikelezayo Yamandla Nokusebenza Kahle Okungenakuqhathaniswa I-ASTM A252

    Incazelo emfushane:

    Le ncazelo iwukunikeza indinganiso yokukhiqiza yesistimu yamapayipi yokuhambisa amanzi, igesi kanye namafutha ezimbonini zikawoyela negesi yemvelo.

    Kunezigaba ezimbili zokucaciswa komkhiqizo, i-PSL 1 kanye ne-PSL 2, i-PSL 2 inezidingo ezidingekayo zokulingana kwekhabhoni, ukuqina kwe-notch, amandla aphezulu okukhiqiza kanye namandla okudonsa.


    Imininingwane Yomkhiqizo

    Amathegi Omkhiqizo

    Yethula:

    Uma kukhulunywa ngokuthuthukiswa kwengqalasizinda, izinhlelo zamapayipi ziyingxenye ebalulekile edlala indima ebalulekile ezimbonini ezahlukahlukene. Ukusebenzisa izinto zokwakha namasu afanele ekwakhiweni kwamapayipi kuqinisekisa ukuqina, amandla nokuthembeka, kanyeipayipi lensimbi elihlanganisiwe eliyindilinga i-ASTM A252ihamba phambili kule ntuthuko yezobuchwepheshe. Kule bhulogi, sizobheka ngokuningiliziwe izimfanelo nezinzuzo ezivelele zala mapayipi amangalisayo aseyizinto ezibalulekile kumaphrojekthi okwakha esimanje.

    Izakhiwo Zemishini Zepayipi Le-SSAW

    ibanga lensimbi

    amandla amancane okukhiqiza
    I-Mpa

    amandla amancane okudonsa
    I-Mpa

    Ukwandiswa Okuncane
    %

    B

    245

    415

    23

    X42

    290

    415

    23

    I-X46

    320

    435

    22

    X52

    360

    460

    21

    I-X56

    390

    490

    19

    I-X60

    415

    520

    18

    I-X65

    450

    535

    18

    X70

    485

    570

    17

    Ukwakheka Kwamakhemikhali Kwamapayipi e-SSAW

    ibanga lensimbi

    C

    Mn

    P

    S

    I-V+Nb+Ti
     

    Ubuningi be-%

    Ubuningi be-%

    Ubuningi be-%

    Ubuningi be-%

    Ubuningi be-%

    B

    0.26

    1.2

    0.03

    0.03

    0.15

    X42

    0.26

    1.3

    0.03

    0.03

    0.15

    I-X46

    0.26

    1.4

    0.03

    0.03

    0.15

    X52

    0.26

    1.4

    0.03

    0.03

    0.15

    I-X56

    0.26

    1.4

    0.03

    0.03

    0.15

    I-X60

    0.26

    1.4

    0.03

    0.03

    0.15

    I-X65

    0.26

    1.45

    0.03

    0.03

    0.15

    X70

    0.26

    1.65

    0.03

    0.03

    0.15

    Ukubekezelelana Kwejiyometri Kwamapayipi e-SSAW

    Ukubekezelelana kwejometri

    ububanzi bangaphandle

    Ubukhulu bodonga

    ukuqondisa

    ukugqama

    isisindo

    Ukuphakama okuphezulu kobuhlalu bokushisela

    D

    T

    		              

    ≤1422mm

    ＞1422mm

    ＜15mm

    ≥15mm

    ukuphela kwepayipi 1.5m

    ubude obugcwele

    umzimba wepayipi

    ukuphela kwepayipi

    		  

    T≤13mm

    T ＞13mm

    ±0.5%
    ≤4mm

    njengoba kuvunyelwene

    ±10%

    ±1.5mm

    3.2mm

    0.2% L

    0.020D

    0.015D

    '+10%
    -3.5%

    3.5mm

    4.8mm

    Ukuhlolwa Kwamanzi

    incazelo yomkhiqizo1

    Amandla Nokuqina Okungenakuqhathaniswa:

    I-ASTM A252ipayipi lensimbi elihlanganisiwe eliyindilingaYenziwe ngensimbi esezingeni eliphezulu ehlangabezana nezindinganiso ze-ASTM A252. Le nqubo iqinisekisa amandla aphezulu nokuqina kwamapayipi, okwenza afanelekele izinhlelo ezahlukene okuhlanganisa ukudluliselwa kukawoyela negesi, izisekelo zokufaka inqwaba kanye nengqalasizinda yamanzi. Ama-spiral weld andisa amandla nokumelana kwamapayipi emandleni angaphandle, aqinisekisa ukuthi angakwazi ukumelana nezimo ezicindezelayo eziphakeme kanye nezimo zezulu ezinzima.

    Ukusebenza kahle kanye nokusebenza kahle kwezindleko:

    Enye yezinzuzo eziyinhloko zepayipi lensimbi elihlanganisiwe elihlanganisiwe le-ASTM A252 ukusebenza kahle kwalo okuphezulu ekufakweni nasekusetshenzisweni. Ukwakheka kwalo okujikelezayo kulula ukukuthwala nokuphatha ngenxa yesisindo salo esilula uma kuqhathaniswa nezinye izinto zamapayipi. Ngaphezu kwalokho, ukuguquguquka kwala mapayipi kwenza kube lula ukugoba, kunciphisa izidingo zokufakwa kanye namajoyinti. Lokhu akugcini nje ngokusindisa isikhathi, kodwa futhi kunciphisa kakhulu izindleko zokufaka, okwenza lolu hlobo lwepayipi lube yisisombululo esingabizi kakhulu samaphrojekthi ahlukahlukene.

    Ukubalwa Kobude Bokushisela Ipayipi Ejikelezayo

    Ukumelana nokugqwala okuthuthukisiwe:

    Ukugqwala kuyinkinga enkulu ezinhlelweni zamapayipi, ikakhulukazi ezimbonini ezisingatha amakhemikhali nezinto ezigqwalisayo. Izinga le-ASTM A252 liqinisekisa ukuthi amapayipi ensimbi ahlanganisiwe abonisa ukumelana okuhle kakhulu nokugqwala. Lawa mapayipi anezimbozo ezivikelayo ezifana ne-epoxy noma i-zinc ezisebenza njengesithiyo kuma-ejenti agqwalisayo, okwandisa impilo yawo yesevisi futhi kunciphisa izindleko zokulungisa. Lesi sici siwusizo ikakhulukazi ekusetshenzisweni komhlaba noma ogwini lapho amapayipi evezwa khona ezimweni zemvelo ezinzima.

    Umthamo omkhulu wokuthwala:

    Esinye isici esibalulekile sepayipi lensimbi elihlanganisiwe elihlanganisiwe le-ASTM A252 amandla alo amahle kakhulu okuthwala umthwalo. Ubuchwepheshe bokushisela obujikelezayo obusetshenziswa enkambisweni yokukhiqiza buthuthukisa amandla kanye nekhono lepayipi lokubekezelela imithwalo esindayo. Kungakhathaliseki ukuthi lisetshenziswa ekwakhiweni kwamabhuloho, izisekelo zesakhiwo noma amapayipi angaphansi komhlaba, la mapayipi ahlinzeka ngobuqotho besakhiwo obuphezulu, anciphisa ingozi yokwehluleka futhi aqinisekise ukuphepha kwesikhathi eside kwamaphrojekthi ahlukahlukene engqalasizinda.

    Ukusimama kwemvelo:

    Esikhathini lapho ukuvikelwa kwemvelo kuyindaba yomhlaba wonke, ukukhetha izinto zokwakha ezifanele kubalulekile. Ipayipi lensimbi elihlanganisiwe elihlanganisiwe i-ASTM A252 lihambisana nemikhuba yokwakha eqhubekayo ngenxa yokuqina kwalo kanye nokuphinde lisetshenziswe. Amapayipi anempilo ende yesevisi futhi angaphinde asetshenziswe kalula ekupheleni kokuphila kwawo, okunciphisa isidingo sokukhishwa kwezinto ezintsha ngenkathi kunciphisa ukungcola kanye nokukhishwa kwekhabhoni.

    Ekuphetheni:

    Ipayipi lensimbi elihlanganisiwe elijikelezayo i-ASTM A252 liguqule imboni yamapayipi ngamandla alo aphezulu, ukuqina kanye nokusebenza kahle kwezindleko. Lawa mapayipi ahlangabezana noma adlula amazinga emboni, okwenza abe ukukhetha kokuqala ezimbonini eziningi. Amandla awo amahle okuthwala umthwalo kanye nokumelana nokugqwala kuqinisekisa intuthuko eqhubekayo yamaphrojekthi engqalasizinda futhi kunegalelo ekuthuthukisweni kwemboni yomhlaba wonke. Ngokusebenzisa lawa mapayipi, amaphrojekthi okwakha angenza ngcono ukusebenza kahle, anciphise izindleko futhi aqinisekise ukuthembeka kwesikhathi eside ngenkathi enamathela ekusimeni kwemvelo.

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