Ukuba kutshanje ubandakanyeke kwiiprojekthi ezinkulu zeetyhubhu zeepile, nokuba zezamandla omoya, iizibuko okanye iibhulorho, xa ukhetha izinto zombhobho kunye nendlela yokwakha, indibaniselwano enye ngokuqinisekileyo ayinakuphepheka: umbhobho wentsimbi yekhabhoni ofakwe i-FBE kunye ne-arc welding engaphantsi kwamanzi kabini.
Musa ukungxama ukujonga iikowuteshini okwangoku. Masiqale sixoxe ngengxaki esebenzayo edibene nayo kwindawo yokwakha - imeko-bume engaphantsi komhlaba "inzima kakhulu". Imanzi, idla ngokugqwala, kwaye umthwalo utshintsha rhoqo. Imibhobho eqhelekileyo idla ngokungasebenzi kakuhle emva kweminyaka embalwa isetyenziswa. Yiyo loo nto iinkampani ezininzi zobunjineli ziphendukela kwii-ASTM A252 ethengiswa ngobuninziabathumeli ngaphandle ukuze bafumane izixa ezikhuluiipayipi ezinkulu ezinobubanzi obukhulu.
Kutshanje, besinengxoxo nomzi-mveliso oseCangzhou malunga neqela leempahla. Indlela abayisebenzisayo ifanelekile ukwabelana ngayo.
Ayizizo zonke iipayipi ze-FBE zangaphakathi ezifanayo.
Masithethe nge-FBE. Abantu abaninzi bayayazi njenge-epoxy powder edibeneyo. Nangona kunjalo,Umbhobho wentsimbi yekhabhoni efakwe i-FBE Esetyenziswa kwiipayipi zeenqwaba ineemfuno ezingqongqo malunga nokunamathela, ubukhulu, kunye nobushushu bokunyanga.
Imveliso esithetha ngayo ngeli xesha ivela kwiCangzhou Spiral Steel Pipes Group Co., Ltd. Le fektri yasungulwa ngo-1993 eCangzhou, kwiPhondo laseHebei. Igubungela indawo yeemitha zesikwere ezingama-350,000 kwaye inempahla iyonke eyi-680 yezigidi zeeyuan. Inabasebenzi abangama-680. Bavelisa iitoni ezingama-400,000 zeepayipi zentsimbi ezijikelezayo ngonyaka, ezinexabiso lemveliso eliyi-1.8 yeebhiliyoni zeeyuan. Ziphakathi kwezona ziphezulu kwicandelo lasekhaya leepayipi zentsimbi ezijikelezayo kunye neemveliso ezigqunyiweyo.
Iipayipi zentsimbi yekhabhoni ezifakwe kwi-FBE abazivelisileyo azisebenzisi nje kuphela "umaleko womgubo". Endaweni yoko, zilawula ngokungqongqo isantya somgca wokugquma kunye nobushushu kwindawo yokufudumeza, zivumela i-FBE ukuba ingene ngokwenene kumphezulu wombhobho wentsimbi, zenze umaleko okhuselayo oxineneyo, oqhubekayo nongaguqukiyo.
Kutheni kubalulekile ukunikela ingqalelo kwinkqubo yokuwelda kwimibhobho yeepali?
Iimeko zoxinzelelo lweepayipi zeepali zahlukile ngokupheleleyo kwezo zeepayipi zamanzi eziqhelekileyo. Amandla okubetha ngexesha lokuqhuba iipali, amandla e-axial phantsi komthwalo wexesha elide, kunye nokuhlaliswa okungalinganiyo phantsi komhlaba zonke zifuna ukuba ii-welds zithembeke ngokupheleleyo.
Le fektri eseCangzhou isebenzisa ukuwelda okufakwe kabini ngaphantsi komhlaba. Abo baqhelene nokuwelda bayazi ukuba eyona nzuzo inkulu yale nkqubo kukuba umthungo wokuwelda wenziwe kakuhle, ubunzulu obunyibilikisiweyo banele, kwaye izinga lokungasebenzi kakuhle kwangaphakathi liphantsi. Ngaphezu koko, ukuwelda okumacala mabini kufana nokubeka "inshurensi ephindwe kabini" kumthungo wokuwelda, njengoko kuqinisekisa ukungena ngokupheleleyo ngaphakathi nangaphandle.
Xa kuthelekiswa nokuwelda okumacala omabini okanye ukuwelda okuqhelekileyo okujikelezayo, imibhobho yeenqwaba enobubanzi obukhulu iveliswa yiukuwelda i-arc engaphantsi kwamanzi kabinizibonakalise uzinzo olungcono kakhulu xa zithwalwa yimithwalo enamandla kwaye zigobile. Oku phantse kuyimfuneko ebalulekileyo kwimibhobho yeenqwaba.
Iipayiphu ezinkulu ezinobukhulu obukhulu - kutheni abantu abaninzi ngoku bekhetha ukuthenga ngobuninzi?
Ngoku sifika kwingxaki ekhankanyiweyo kwisihloko sethu: Kutheni kufuneka imibhobho ye-ASTM A252 FBE efakwe ii-DSAW ezithengiswa ngobuninzi ukuze zifakwe?
Impendulo ilula kakhulu - uzinzo + iindleko ezilawulekayo.
I-ASTM A252 ngumgangatho othile weepayipi zentsimbi ezisetyenziselwa iipali, ezineemfuno ezicacileyo zokuqina kokukhupha, amandla okutsalwa, kunye nokwandiswa. Le fektri eseCangzhou ivelisa ngokuthe ngqo iipayipi zeepali ezinkulu ngokuhambelana nalo mgangatho, kwaye ikwangabathengisi be-ASTM A252 ngobuninzi, isusa imfuneko yabalamli.
Kwiinkampani zobunjineli, ukuthenga imibhobho emikhulu ngobukhulu kubavelisi abanjalo kube kanye kuluncedo ngezizathu ezininzi. Okokuqala, iinkcukacha ziyafana kwaye umgangatho uyalandeleka. Okwesibini, ixabiso liyakhuphisana ngokwenene. Okwesithathu, umjikelo wokubonelela uyalawuleka - umzi-mveliso onokukwazi ukuvelisa iitoni ezingama-400,000 ngonyaka awunazo ishedyuli yemveliso kunye nobuchule bokugcina izinto eziluhlaza ezinokuthi zilingane neeworkshops ezincinci.
Kwiprojekthi yokwenyani, ezi mbhobho zisetyenziswa phi?
Nazi ezinye zeemeko zokwenyani:
Izibuko kunye nezibuko: Iipayipu kufuneka zikwazi ukumelana nokugqwala kwamanzi olwandle. Ukusebenza kakuhle kwepayipu zentsimbi yekhabhoni ezifakwe kwi-FBE kubhetele kakhulu kunokwepayipu eqhelekileyo engenanto.
Isiseko sebhulorho: Iimfuneko eziphezulu zibekwe kwi-weld seams. Inkqubo yokuwelda ye-arc engaphantsi kwamanzi kabini inokuqinisekisa ukuhambelana kwetyhubhu nganye yeepali.
Isiseko senqaba yeturbine yomoya: Ububanzi obukhulu, ukungcwaba okunzulu, ukuthwala umthwalo ixesha elide. Iipayipi zokugquma ezinobubanzi obukhulu, ngokuhambelana nomgangatho we-ASTM A252, lukhetho oluqhelekileyo kushishino.
Iimveliso zale fektri eCangzhou zisasazwa kakhulu kwezi ndawo. Ngaphezu koko, inzuzo yazo kukuba azivelisi nje kuphela imibhobho edibeneyo kodwa zikwaqhuba neenkqubo zokugquma. Inkqubo yemveliso inxulumene ngakumbi, kwaye zinokulawula umgangatho kuyo yonke indlela.
Ngamafutshane, akukho kubetha ecaleni kwehlathi.
Ukuba ujonge iipayipi zentsimbi yekhabhoni ezifakwe i-FBE, ezineemfuno ezingqongqo zee-weld seams (kufuneka zifakwe i-arc engaphantsi kwamanzi kabini), kwaye ukuba iprojekthi yakho ifuna iipayipi ezinkulu ezinobubanzi obukhulu, kwaye ufuna umthengisi othembekileyo we-ASTM A252 - iCangzhou Spiral Steel Pipe Group lukhetho olufanele ukuqwalaselwa ngononophelo.
Asikuko ukuba zibiza kancinci kakhulu; kunoko, kukuba kolu didi, akukho baninzi abavelisi basekhaya abanokudibanisa amandla emveliso, iziqinisekiso, iinkqubo, kunye nokufaka zonke izinto ngaxeshanye.
Ngoko ke, kutheni ukhetha ukusebenzisa iipayipi ze-DSAW ezifakwe i-ASTM A252 FBE ezithengiswa ngobuninzi ukuze zipakishwe?
Impendulo elula yile: ilula, inamandla kakhulu, kwaye inokumelana novavanyo emhlabeni.
Ixesha lokuthumela: Epreli-30-2026