Imithethonqubo yamapayipi ensimbi anezindonga eziwugqinsi kwezobunjiniyela: imithethonqubo ehambisanayo nemithethonqubo ehlukahlukene yokukhethwa kwangempela kanye nokusetshenziswa kwamapayipi anezindonga eziwugqinsi. Lapho amapayipi ensimbi anezindonga eziwugqinsi kanye nokufakwa kwamapayipi anodonga oluwugqinsi kukhethwa noma kusetshenziswa, kufanele kuqala alandele imithethonqubo efanele kanye nemithethonqubo eyahlukene emibhalweni, ikakhulukazi yamapayipi athutha imidiya ewuketshezi eyingozi kakhulu noma eyingozi kakhulu, imidiya evuthayo, kanye nomfutho ophezulu. amagesi. Ngaphansi kwalesi sisekelo, uhlobo lokufakwa kwamapayipi lunqunywa ngokuyinhloko ngokusekelwe enjongweni nezimo zokusetshenziswa (ingcindezi, izinga lokushisa, i-fluid medium).

Izinkinga ezindinganisweni zokukhetha zamapayipi ensimbi anezindonga eziwugqinsi:
1. Yakhiwe kusuka ohlelweni olujwayelekile. Ngokukhethwa kuphrojekthi, kunezindinganiso zamapayipi, kodwa azikho izindinganiso ezihambisanayo zokubumba noma ukulingisa. Iqiniso liwukuthi izindinganiso zokufakwa kwamapayipi kanye nama-forgings ziboleka izindinganiso zokubumba imikhumbi yokucindezela, ngaphandle kokucabangela umehluko phakathi kwakho kokubili, njengokushisela, ukuhlolwa kwefilimu, neminye imithetho.
2. Izindinganiso zokufakwa kwamapayipi ziyahlukahluka kakhulu, futhi okuqukethwe akunakho ukuvumelana nokuhleleka, okuholela ekuphikisaneni ekuxhumekeni, futhi kubangele ukuphazamiseka ekusetshenzisweni.
3. Ayikho indinganiso yokuhlola yohlobo lokufakwa kwamapayipi. I-GB12459 kanye nezindinganiso ze-GB13401 kuphela ezicacisa ukubala kwengcindezi yokuhlolwa kokuqhuma kokufakwa kwamapayipi angenamthungo anezinqe zensimbi kanye nokufakwa kwepayipi lensimbi elinezinqe ezishiselwe. Azikho ezinye izinhlobo zamazinga okuhlola noma izindinganiso zokuqalisa zokuqinisekisa ukwenziwa kokufakwa kwamapayipi. Ifomula yesisindo sepayipi eliqinile elinezindonga: [(ukujiya kodonga lwangaphandle)*ukujiya kodonga]*0.02466=kg/imitha (isisindo imitha).

Ukunqunywa kwebanga lamandla lamapayipi ensimbi anezindonga eziwugqinsi:
1) Izifakelo zamapayipi eziveza ibanga lakho noma ezicacisa izilinganiso zezinga lokushisa lokucindezela kungcindezi encane kufanele zisebenzise isilinganiso sezinga lokushisa elishiwo ezingeni njengesisekelo sokusetshenziswa kwazo, njenge-GB/T17185;
2) Mayelana nokufakwa kwamapayipi okucacisa kuphela ubukhulu bepayipi eliqondile elixhunywe kubo ngokwendinganiso, izilinganiso zabo zezinga lokushisa elisebenzayo kufanele zinqunywe ngokuya ngebanga lepayipi lebhentshimakhi elishiwo ezingeni, elifana ne-GB14383~GB14626.
3) Ngokufakwa kwamapayipi okucacisa kuphela ubukhulu bangaphandle ezingeni, njenge-GB12459 ne-GB13401, amandla abo okuthwala ingcindezi kufanele anqunywe ngokuhlolwa kokuqinisekisa.
I-4) Kwabanye, ibhentshimakhi yokusebenzisa kufanele inqunywe ngokuklama kwengcindezi noma ukuhlaziywa kokuhlaziya ngemithetho efanele. Ukwengeza, izinga lamandla lokufakwa kwamapayipi akufanele libe ngaphansi kokucindezela ngaphansi kwezimo ezinzima zokusebenza ezingase zihlangane nalo lonke uhlelo lwamapayipi ngesikhathi sokusebenza.