Kwiiprojekthi zesiseko seepali, umgangatho weepali zentsimbi umisela ngokuthe ngqo uzinzo kunye nokuqina kwesiseko sesakhiwo. Ukukhetha isiseko esithembekileyoI-ASTM A252 Factorylinyathelo lokuqala elibalulekileyo lokuqinisekisa ukhuseleko lweprojekthi. Eli nqaku liza kukunceda uqonde amanqaku aphambili omgangatho we-ASTM A252 kunye nendlela yokuvavanya ababoneleli abakumgangatho ophezulu.
Ukutolikwa koMgangatho we-ASTM A252
I-ASTM A252 yinkcazo eqhelekileyo "yeepayipu zentsimbi ezidityanisiweyo nezingenamthungo" ezenziwe yi-American Society for Testing and Materials. Lo mgangatho usebenza kwi-circulariipayipu zentsimbienobukhulu bodonga obuqhelekileyo, kwaye ukusetyenziswa kwayo kwahlulwe kwiindidi ezimbini:
Izinto ezithwala imithwalo esisigxina: Iipayipi zentsimbi zisebenza njengesakhiwo esithwala imithwalo esisigxina, zithwala ngqo imithwalo yesakhiwo.
Iqokobhe lokugalela isinyithi: Umbhobho wentsimbi usebenza njengeqokobhe, kwaye isinyithi sigalelwa ngaphakathi ukuze senze inqwaba efakwe kwindawo yayo.
Lo mgangatho ugubungela amanqanaba amathathu okuqina: Ibanga loku-1, iBanga lesi-2, kunye neBanga lesi-3. Phakathi kwawo, i-A252 GRADE 1 Steel Pipe inomthungo ogqwesileyo kwaye inoqoqosho oluphezulu, kwaye ifanelekile kwiiprojekthi zesiseko seenqwaba ezikhaphukhaphu ukuya kweziphakathi.
Izinto ezibalulekileyo ekufuneka ziqwalaselwe ngobukhulu beepayiphu zentsimbi
Ukukhethwa kweUbungakanani bepayipi ye-ASTM A252ichaphazela ngokuthe ngqo ukusebenza kakuhle kolwakhiwo kunye nomthamo wokuthwala umthwalo. Iiparameter eziphambili ziquka:
Uluhlu lobubanzi: Ngokweemeko zejoloji kunye neemfuno zomthwalo, ingenziwa ngokwezifiso ukusuka kwiidayamitha ezincinci ukuya kwiidayamitha ezinkulu kakhulu.
Udidi lobukhulu bodonga: Ubukhulu bodonga obuqhelekileyo bumisela amandla oxinzelelo kunye nokuqina.
Ubude bombhobho omnye: Bunciphisa iindawo zokuwelda kwindawo kwaye buphucula ukusebenza kakuhle kolwakhiwo
Iipayipi zeepali ezidityanisiweyo ezibonelelwa yiCangzhou Spiral Steel Pipe Group Co., Ltd. zinobubanzi obuqala kwi-219mm ukuya kwi-3500mm, kwaye ipali nganye inokufikelela kwiimitha ezingama-35 ubude, nto leyo ehlangabezana ngempumelelo neemfuno zeepali ezinde kubunjineli besiseko esinzulu.
Indlela yokuvavanya umzi-mveliso we-ASTM A252 osemgangathweni ophezulu
Xa ukhetha umzi-mveliso we-ASTM A252, kucetyiswa ukuba kuqwalaselwe ezi zinto zilandelayo:
Iziqinisekiso zemveliso kunye namandla emveliso
Iqela leeMbhobho zeNsimbi ezijikelezayo iCangzhou lasungulwa ngo-1993 kwaye liyinkampani ephambili evelisa iipayipi zentsimbi ezijikelezayo kunye nepeyinti eTshayina. Lo mzi-mveliso ukwiSixeko saseCangzhou, kwiPhondo laseHebei, ugubungela indawo yeemitha zesikwere ezingama-350,000, kunye nempahla iyonke eyi-680 yezigidi zeeyuan. Ivelisa iitoni ezingama-400,000 zeepayipi zentsimbi ezijikelezayo ngonyaka kwaye inexabiso lonyaka lemveliso eliyi-1.8 yeebhiliyoni zeeyuan. Amandla emveliso azinzileyo aqinisekisa ukuhanjiswa kweeodolo ezinkulu ngexesha elifanelekileyo.
2. Inkqubo yoLawulo loMgangatho
Thobela ngokungqongqo umgangatho we-ASTM A252. Sebenzisa ulawulo olupheleleyo kuyo yonke inkqubo ukusuka ekuthengweni kwentsimbi ukuya ekuhlolweni kwe-weld ukuqinisekisa iipropati zoomatshini kunye nokuchaneka kobukhulu bezinto zombhobho.
3. Ubuchule bokugquma ngokuchasene nokugqwala
Iiprojekthi zesiseko seenqwaba zihlala zichatshazelwa ziindawo ezimanzi okanye ezirhabaxa. Inkonzo yokugquma enikezelwa ngumzi-mveliso wezinto zombhobho inokubonelela ngezisombululo zokulwa nokugqwala ezifana ne-epoxy kunye ne-PE, ngaloo ndlela yandisa ubomi benkonzo.
4. Iingenelo zothutho lwe-logistics
ICangzhou ikufutshane neTianjin Port. Isebenzisa elona zibuko likhulu emantla, inokufikelela kuthutho oludibeneyo olusebenzayo phakathi kolwandle, ngaloo ndlela inciphisa iindleko zothutho lwamazwe ngamazwe.
Isiphelo
Xa ukhetha umzi-mveliso we-ASTM A252 othembekileyo, kuyimfuneko ukuvavanya ngokupheleleyo imigangatho yawo yemveliso, ukugubungela iinkcukacha, amandla emveliso kunye nobuchule bokuhambisa izinto. Ngamava aphantse abe yiminyaka engama-30 okuvelisa kunye nenzuzo epheleleyo yeshishini, iCangzhou Spiral Steel Pipe Group izibophelele ekuboneleleni ngezisombululo zeepayipi zentsimbi ezikumgangatho ophezulu kwiiprojekthi zesiseko seepayipi zehlabathi.
Nceda uzive ukhululekile ukuqhagamshelana nathi ukuze ufumane iingcebiso zokukhetha kunye neekowuteshini ezenziwe ngokwezifiso zobungakanani beepayipi ze-ASTM A252.
Ixesha leposi: Matshi-18-2026