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    Amapayipi ensimbi e-Helical-seam carbon steel ASTM A139 Grade A, B, C

    Amapayipi ensimbi e-Helical-seam carbon steel ASTM A139 Ibanga A, B, C Isithombe Esifakiwe
    • Amapayipi ensimbi e-Helical-seam carbon steel ASTM A139 Grade A, B, C
    • Amapayipi ensimbi e-Helical-seam carbon steel ASTM A139 Grade A, B, C

    Incazelo emfushane:

    Lokhu kucaciswa kuhlanganisa amabanga amahlanu wepayipi lensimbi elihlanganisiwe (arc) elishiselwe i-helical-seam.Ipayipi lenzelwe ukudlulisa uketshezi, igesi noma umhwamuko.

    Ngemigqa engu-13 yokukhiqiza yepayipi lensimbi elivunguzayo, iCangzhou Spiral Steel pipes group Co., Ltd. iyakwazi ukwenza amapayipi ensimbi ane-helical-seam anobubanzi obungaphandle ukusuka ku-219mm kuya ku-3500mm nogqinsi olufika ku-25.4mm.


    Imininingwane Yomkhiqizo

    Omaka bomkhiqizo

    Impahla Mechanical

    Ibanga A Ibanga B Ibanga C Ibanga D Ibanga E
    Amandla esivuno, min, Mpa(KSI) 330(48) 415(60) 415(60) 415(60) 445(66)
    Amandla e-tensile, min, Mpa(KSI) 205(30) 240(35) 290(42) 315(46) 360(52)

    Ukwakheka Kwamakhemikhali

    Isici

    Ukwakhiwa, Ubukhulu, %

    Ibanga A

    Ibanga B

    Ibanga C

    Ibanga D

    Ibanga E

    Ikhabhoni

    0.25

    0.26

    0.28

    0.30

    0.30

    IManganese

    1.00

    1.00

    1.20

    1.30

    1.40

    Phosphorus

    0.035

    0.035

    0.035

    0.035

    0.035

    Isibabule

    0.035

    0.035

    0.035

    0.035

    0.035

    Ukuhlolwa kwe-Hydrostatic

    Ubude bepayipi ngalinye kufanele buhlolwe ngumenzi kumfutho we-hydrostatic ozokhiqiza odongeni lwamapayipi ingcindezi engekho ngaphansi kuka-60% wamandla esivuno amancane ashiwo ekamelweni lokushisa.Ingcindezi izonqunywa yi-equation elandelayo:
    P=2St/D

    Ukwehluka Okuvumelekile Kwesisindo Nobukhulu

    Ubude bepayipi ngalinye buzokalwa ngokuhlukene futhi isisindo salo akumele sihluke ngaphezu kuka-10% ngaphezulu noma u-5.5% ngaphansi kwesisindo salo esicatshangelwayo, kubalwe kusetshenziswa ubude balo nesisindo salo ngobude beyunithi ngayinye.
    Idayamitha yangaphandle akumele ihluke ngaphezu kuka-±1% ukusuka kububanzi obukhethekile obushiwo bengaphandle.
    Ukujiya kodonga kunoma iyiphi indawo akumele kube ngaphezu kuka-12.5% ​​ngaphansi kogqinsi olushiwo.

    Ubude

    Ubude obungahleliwe obubodwa: 16 kuya ku-25ft(4.88 kuya ku-7.62m)
    Ubude obuphindwe kabili obungahleliwe: ngaphezulu kwama-25ft kuya ku-35ft(7.62 kuya ku-10.67m)
    Ubude obufanayo: ukuhluka okuvumelekile ±1in

    Iyaphela

    Izinqwaba zamapayipi zizonikezwa iziphetho ezicacile, futhi ama-burrs ekugcineni azosuswa.
    Lapho ukuphela kwepayipi okushiwo ukuthi kube yi-bevel iphela, i-engeli izoba ngu-30 kuya ku-35 degree

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