Kwizakhiwo nakubunjineli bezakhiwo, ukukhethwa kwezinto kubalulekile ukuqinisekisa ukuthembeka kunye nobude besakhiwo. Enye yezinto ezihlonitshwa kakhulu kushishino yipayipi ye-ASTM A252. Le nkcazelo igubungela iipali zepayipi zentsimbi ezisilinda, ezisetyenziswa eludongeni, ezibalulekileyo kwiindlela ezahlukeneyo zokusebenza, ingakumbi kubunjineli besiseko. Kule bhlog, siza kujonga nzulu iinkcukacha eziphambili kunye nokusetyenziswa kobukhulu beepayipi ze-ASTM A252 ngelixa sigqamisa ubuchule bomenzi ophambili oseCangzhou, kwiPhondo laseHebei.
Iinkcukacha eziphambili zeepayipi ze-ASTM A252
I-ASTM A252 yinkcazo eqhelekileyo echaza iimfuno zeepayipu zentsimbi ezitshixiweyo nezingenamthungo. Ezi payipu zenzelwe ukusetyenziswa njengamalungu asisigxina athwala umthwalo okanye njengeegobolondo zeepayipu zekhonkrithi ezifakwe kwindawo yazo. Iinkcukacha eziphambili ze-ASTM A252 ziquka:
1. Udidi lwezinto: Olu luhlu luquka amanqanaba amathathu entsimbi: Udidi 1, Udidi 2, kunye noDidi 3. Udidi ngalunye lunemfuno eyahlukileyo yokuqina kwemveliso, apho Udidi 3 lunamandla aphezulu emveliso kwaye lufanelekile kwizicelo ezinzima.
2. Ubungakanani: Iipayipi ze-ASTM A252 ziyafumaneka ngobukhulu obahlukeneyo bodonga, nto leyo evumela ukuguquguquka koyilo kunye nokusetyenziswa kwazo. Ezi pipes ziyafumaneka ngobubanzi obuqala kwiisentimitha ezi-6 ukuya kwiisentimitha ezingama-60 ukuhlangabezana neemfuno ezahlukeneyo zeprojekthi.
3. Iinketho ezidityanisiweyo nezingenamthungo:Umbhobho we-ASTM A252ingenziwa itshixiwe okanye ingenamthungo, inika ukhetho olusekelwe kwiimfuno ezithile zeprojekthi yakho. Umbhobho otshixiweyo ngokubanzi uxabisa kancinci, ngelixa umbhobho ongenamthungo unika amandla kunye nokuthembeka okukhulu.
4. Ukumelana nokugqwala: Ngokuxhomekeke kwisicelo, imibhobho ye-ASTM A252 inokugqunywa okanye inyangwe ukuze yomeleze ukumelana nokugqwala, ukuqinisekisa ukusetyenziswa ixesha elide nakwiindawo ezinzima.
Izicelo zeMbhobho ye-ASTM A252
Ukuguquguquka kwepayipi ye-ASTM A252 kwenza ukuba ifaneleke kwiintlobo ngeentlobo zezicelo, kuquka:
- Iingqumba zeSiseko: Ezi ngqumba zisetyenziswa rhoqo njengeengqumba zesiseko kwiiprojekthi zokwakha, zibonelela ngenkxaso efunekayo kwizakhiwo, iibhulorho, kunye nezinye izakhiwo.
- Izakhiwo zaseLwandle: Imibhobho ye-ASTM A252 ifanelekile ukusetyenziswa kwiindawo zaselwandle kwaye ingasetyenziswa ekwakhiweni kweedokhi, ii-piers, kunye namaqonga aselunxwemeni.
- Iindonga Zokugcina Umhlaba: Amandla nokuqina kwezi payipi kuzenza zilungele ukusetyenziswa kwiindonga zokugcina umhlaba, nto leyo enceda ekuzinziseni umhlaba kwaye ithintele ukukhukuliseka komhlaba.
- Iingqumba zekhonkrithi ezifakwe kwindawo ethile: Xa zisetyenziswa njengekhabhathi yeengqumba zekhonkrithi ezifakwe kwindawo ethile,I-ASTM A252Umbhobho unika isakhelo esomeleleyo esiphucula ukuthembeka kwesakhiwo sekhonkrithi.
Umenzi Ophambili eCangzhou
Umvelisi owaziwayo oseCangzhou, kwiPhondo laseHebei, ebesenza imibhobho ye-ASTM A252 ekumgangatho ophezulu ukusukela oko yasekwa ngo-1993. Le nkampani igubungela indawo yeemitha zesikwere ezingama-350,000, inempahla iyonke eyi-RMB 680 yezigidi, kwaye iqeshe abasebenzi abamalunga nama-680 abanezakhono. Umvelisi uzimisele ukubonelela ngeemveliso ezihlangabezana nemigangatho engqongqo yomgangatho, ukuqinisekisa ukuba imibhobho yakhe ye-ASTM A252 inokuthenjwa kwaye ihlala ixesha elide kwizicelo ezahlukeneyo.
Ngokugxila ekuveliseni izinto ezintsha kunye nokwaneliseka kwabathengi, inkampani iye yaba yinkokeli kushishino, inika izisombululo ezenziwe ngokwezifiso ukuhlangabezana neemfuno ezikhethekileyo zabathengi bayo. Ngezixhobo zanamhlanje kunye nabasebenzi abanamava, bayakwazi ukuvelisa imibhobho ngokweemfuno eziphezulu, nto leyo ebenza babe liqabane elithembekileyo kwiiprojekthi zokwakha nezobunjineli.
ukuququmbela
Ukuqukumbela, iipayipi ze-ASTM A252 ziyinxalenye ebalulekileyo yolwakhiwo lwanamhlanje, zibonelela ngeenkcukacha ezibalulekileyo ezihlangabezana neemfuno zezicelo ezahlukeneyo. Njengoko umenzi odumileyo eCangzhou evelisa ezi payipi, eli shishini linokuxhomekeka kwizixhobo ezisemgangathweni ukuqinisekisa ukhuseleko kunye nokuzinza kwesakhiwo. Nokuba sisetyenziselwa ubunjineli besiseko, izakhiwo zaselwandle okanye iindonga zokugcina, iipayipi ze-ASTM A252 zikhetho olubalulekileyo kwiinjineli kunye nabakhi.
Ixesha leposi: Feb-11-2025