Uma usanda kubandakanyeka kumaphrojekthi amakhulu epayipi lenqwaba, kungaba ngamandla omoya, amachweba noma amabhuloho, lapho ukhetha izinto zepayipi kanye nendlela yokwakha, inhlanganisela eyodwa ayinakugwenywa nakanjani: ipayipi lensimbi yekhabhoni eline-FBE + ukushisela i-arc engaphansi kwamanzi kabili.
Ungasheshi ukubheka izingcaphuno okwamanje. Ake siqale sixoxe ngenkinga engokoqobo etholakala endaweni yokwakha - indawo engaphansi komhlaba "iyinkinga kakhulu". Imanzi, ivame ukugqwala, futhi umthwalo ushintsha njalo. Amapayipi ajwayelekile avame ukungasebenzi kahle ngemva kweminyaka embalwa yokusetshenziswa. Yingakho izinkampani eziningi zobunjiniyela ziphendukela ku-i-ASTM A252 ethengiswa ngobuningiabathumeli bamazwe angaphandle ukuthola inani elikhuluamapayipi amakhulu obubanzi.
Muva nje, sibe nengxoxo nefektri esisunguliwe eCangzhou mayelana neqoqo lezimpahla. Indlela yabo yokwenza izinto ifanele ukwabelana ngayo.
Akuwona wonke amapayipi e-FBE inner liner afanayo.
Ake sixoxe nge-FBE. Abantu abaningi bayayijwayele njengempuphu ye-epoxy eboshiwe. Kodwa-ke,Ipayipi lensimbi yekhabhoni elinophahla lwe-FBE Esetshenziswa kumapayipi enqwaba inezidingo eziqinile maqondana nokunamathela, ukujiya, kanye nokushisa kokupholisa.
Umkhiqizo esixoxa ngawo kulokhu uvela eCangzhou Spiral Steel Pipes Group Co., Ltd. Le fektri yasungulwa ngo-1993 eCangzhou, eSifundazweni saseHebei. Ihlanganisa indawo engamamitha-skwele angu-350,000 futhi inempahla engu-680 million yuan. Inabasebenzi abangu-680. Bakhiqiza amathani angu-400,000 amapayipi ensimbi ajikelezayo minyaka yonke, anenani lokukhipha elingu-1.8 billion yuan. Baphakathi kwezinga eliphezulu emkhakheni wasekhaya wamapayipi ensimbi ajikelezayo kanye nemikhiqizo embozwe.
Amapayipi ensimbi yekhabhoni ahlanganiswe ne-FBE awakhiqizi nje "ngokufaka ungqimba lwempuphu". Esikhundleni salokho, alawula ngokuqinile isivinini somugqa wokumboza kanye nokushisa endaweni yokushisa, okuvumela i-FBE ukuthi ingene ngempela ebusweni bepayipi lensimbi, yakhe ungqimba oluvikelayo oluqinile, oluqhubekayo nolumelana ne-cathode.
Kungani kubalulekile ukunaka inqubo yokushisela amapayipi enqwaba?
Izimo zokucindezeleka zamapayipi enqwaba zihluke ngokuphelele kwezamapayipi amanzi avamile. Amandla okushaya ngesikhathi sokushayela inqwaba, amandla e-axial ngaphansi komthwalo wesikhathi eside, kanye nokungalingani kokuhlala ngaphansi komhlaba konke kudinga ukuthi ama-welds kumele athembeke ngokuphelele.
Le fektri eCangzhou isebenzisa ukushisela okufakwe i-arc engaphansi kwamanzi kabili. Labo abajwayelene nokushisela bayazi ukuthi inzuzo enkulu yale nqubo ukuthi umthungo wokushisela wakheke kahle, ukujula okuncibilikisiwe kwanele, futhi izinga lokukhubazeka kwangaphakathi liphansi. Ngaphezu kwalokho, ukushisela okunezinhlangothi ezimbili kufana nokufaka "umshwalense ophindwe kabili" kumthungo wokushisela, njengoba kuqinisekisa ukungena okugcwele ngaphakathi nangaphandle.
Uma kuqhathaniswa nokushisela ohlangothini olulodwa noma ukushisela okuvamile okujikelezayo, amapayipi amakhulu akhiqizwa yiukushisela i-arc engaphansi kwamanzi kabilizikhombisa ukuzinza okungcono kakhulu uma zithwalwa imithwalo enamandla futhi zigoba. Lokhu cishe kuyimfuneko ebalulekile yamapayipi enqwaba.
Izinqwaba zamapayipi amakhulu - kungani abantu abaningi manje sebekhetha ukuthenga ngobuningi?
Manje sesifika enkingeni okukhulunywe ngayo esihlokweni sethu: Kungani amapayipi e-DSAW ahlanganiswe nge-ASTM A252 FBE athengiswa ngobuningi ukuze afakwe?
Impendulo empeleni ilula kakhulu - ukuzinza + izindleko ezilawulekayo.
I-ASTM A252 iyindinganiso ethile yamapayipi ensimbi asetshenziselwa izinqwaba, enezidingo ezicacile zamandla okukhiqiza, amandla okudonsa, kanye nokwelulwa. Le fektri eCangzhou ikhiqiza ngqo amapayipi amakhulu ngokuhambisana nale ndinganiso, futhi ingabathengisi be-ASTM A252 ngobuningi, isusa isidingo sabalamuli.
Ezinkampanini zobunjiniyela, ukuthenga amapayipi amakhulu ngobuningi kubakhiqizi abanjalo kanye kunenzuzo ngezizathu eziningana. Okokuqala, imininingwane iyafana futhi ikhwalithi iyalandeleka. Okwesibili, intengo iyancintisana ngempela. Okwesithathu, umjikelezo wokuphakelwa uyalawuleka - ifektri enekhono lokukhiqiza laminyaka yonke elingamathani angu-400,000 ayinawo amakhono okuhlela ukukhiqiza kanye nempahla eluhlaza engalinganiswa nama-workshop amancane.
Kuphrojekthi yangempela, la mapayipi asetshenziswa kuphi?
Nazi izimo ezimbalwa zangempela:
Ichweba kanye nechweba: Izinqwaba zamapayipi kudingeka zimelane nokugqwala kwamanzi olwandle. Ukusebenza kwamapayipi ensimbi yekhabhoni ahlanganiswe ne-FBE kungcono kakhulu kunokwamapayipi avamile angenalutho.
Isisekelo sebhuloho: Izidingo eziphezulu zibekwe phezu kwemithungo yokushisela. Inqubo yokushisela i-arc engaphansi kwamanzi kabili ingaqinisekisa ukuhambisana kwepayipi ngalinye lenqwaba.
Isisekelo sombhoshongo we-wind turbine: Ububanzi obukhulu, ukungcwaba okujulile, ukuthwala umthwalo isikhathi eside. Amapayipi okufaka inqwaba anobubanzi obukhulu, ngokuvumelana nezindinganiso ze-ASTM A252, ayindlela evamile yokukhetha embonini.
Imikhiqizo yale fektri eCangzhou isatshalaliswa kakhulu kulezi zindawo. Ngaphezu kwalokho, inzuzo yazo iwukuthi azikhiqizi nje kuphela amapayipi ahlanganisiwe kodwa futhi ziqhuba nezinqubo zokumboza. Inqubo yokukhiqiza ihlobene kakhulu, futhi zingalawula nekhwalithi yonke indlela.
Ngamafuphi, akukho ukushayana eduze kwesihlahla.
Uma ufuna amapayipi ensimbi yekhabhoni afakwe i-FBE, anezidingo eziqinile zemithungo yokushisela (kumele ashiselwe nge-arc engaphansi kwamanzi kabili), futhi uma iphrojekthi yakho idinga amapayipi amakhulu, futhi ufuna umthengisi othembekile we-ASTM A252 - i-Cangzhou Spiral Steel Pipe Group inketho efanele ukucatshangelwa ngokucophelela.
Akukhona ukuthi zishibhile ngendlela exakile; kunalokho, ukuthi kulesi sigaba, empeleni ababaningi abakhiqizi basekhaya abangahlanganisa amandla okukhiqiza, iziqu, izinqubo, kanye nokugqoka konke ngesikhathi esisodwa.
Ngakho-ke, kungani ukhetha amapayipi e-DSAW ahlanganiswe nge-ASTM A252 FBE athengiswa ngobuningi ukuze afakwe?
Impendulo elula ithi: ilula, inamandla kakhulu, futhi ingamelana novivinyo emhlabathini.
Isikhathi sokuthunyelwe: Ephreli-30-2026