Ukuqonda umbhobho we-ASTM A252: Ubungakanani, umgangatho, kunye nezicelo
Umbhobho we-Astm A252licandelo elibalulekileyo kusetyenziso lwezakhiwo kuluhlu olubanzi lwamashishini, ngakumbi kulwakhiwo kunye neeprojekthi zeziseko zophuhliso. Le bhlog iya kuphonononga ubungakanani, umgangatho, kunye nokusetyenziswa kombhobho we-ASTM A252, iqaqambisa izakhono zomenzi ophambili osekelwe eCangzhou, kwiPhondo laseHebei.
Yintoni umbhobho we-ASTM A252?
Astm A252 Ubungakanani Bombhobhosisicaciso esiphuhliswe nguMbutho waseMelika woVavanyo kunye neMpahla (ASTM) echaza iimfuno zepayipi yentsimbi edityanisiweyo kunye nengenamthungo esetyenziselwa ukufaka izicelo. Umgangatho ugxile kwingqibelelo yesakhiwo sombhobho kunye nokuqina, okwenza kube ngokufanelekileyo kwiziseko, iibhulorho, kunye nezinye izicelo ezinzima.
Yintoni umbhobho we-ASTM A252?
I-ASTM A252 yinkcazo egunyazisiweyo eyenziwe nguMbutho waseMelika woVavanyo kunye neMpahla (ASTM), ngokukodwa kwimibhobho yentsimbi esetyenziselwa ukuqhuba imfumba kunye nezicelo zenkxaso yesakhiwo esinzulu. Lo mgangatho uchaza ngokungqongqo ukubunjwa kweekhemikhali, iipropathi zoomatshini, ukunyamezelwa kobukhulu kunye neendlela zokuvavanya kwimibhobho yentsimbi, ukuqinisekisa ukuthembeka kwesakhiwo, ukuqina kunye nomthamo wokuthwala umthwalo. Lukhetho olufanelekileyo lweeprojekthi ezisisiseko ezifana neeBridges, izakhiwo eziphakamileyo kunye namazibuko.
Astm A252 Umbhobho Imilinganiseloimilinganiselo kunye neenkcukacha
Imibhobho ye-ASTM A252 ihlelwa ngokwamanqanaba amathathu ngokweemfuno zamandla: GR 1, GR 2, kunye ne-GR 3, apho ibakala GR 3 linamandla aphezulu. Ubungakanani bayo buguquguqukayo kwaye bunokuhlangabezana neemfuno ezahlukeneyo zobunjineli
Ububanzi bangaphandle (OD) : Ukususela kwi-intshi ezi-6 ukuya kwii-intshi ze-60, kunye nobukhulu obukhulu kunokuveliswa.
Ubunzima bodonga (WT) : Ngokuqhelekileyo phakathi kwe-0.188 intshi kunye ne-0.500 intshi, kwaye inokulungelelaniswa ngokweemfuno zoxinzelelo kunye nokugoba ukugoba.
Ubude: Ubude obuqhelekileyo ziinyawo ezingama-20 okanye iinyawo ezingama-40. Imveliso eyenziwe ngokwezifiso ikwaxhaswa ngokweemfuno zeprojekthi.
Olu luhlu lubanzi lobungakanani luqinisekisa ukuba iinjineli zinokukhetha ezona nkcukacha zinexabiso eliphantsi kwiiprojekthi ezithile.
Umbhobho we-ASTM A252 usetyenziswa kwiintlobo ngeentlobo zezicelo, kuquka:
1. I-Piling: Le mibhobho idla ngokusetyenziswa njengeemfumba zomhlaba kwiiprojekthi zokwakha ukubonelela uzinzo kunye nenkxaso kwisakhiwo.
2. Iibhulorho: Amandla kunye nokuqina kombhobho we-ASTM A252 kwenza kube yinto efanelekileyo yokwakhiwa kwebhuloho, apho inokumelana nemithwalo enzima kunye neemeko zokusingqongileyo.
3. Ulwakhiwo lwaseLwandle: Ukumelana nomhlwa kwale mibhobho ivumela ukuba isetyenziswe kwizicelo zaselwandle ezifana needokhi kunye neepiers.
4. I-Oyile neGesi: Ngenxa yolwakhiwo oluqinileyo, umbhobho we-ASTM A252 nawo usetyenziswa kwishishini leoli negesi ukuthutha ulwelo kunye neegesi.
Isishwankathelo
Ukubeka nje, umbhobho we-ASTM A252 yinxalenye ebalulekileyo yoluhlu olubanzi lwezicelo zesakhiwo, ukuhambisa ukuthembeka kunye namandla. Lo mzimveliso eCangzhou, kwiPhondo laseHebei, ngumenzi ohamba phambili wolu hlobo lombhobho, ukuqinisekisa ukuba iimveliso zayo zihlangabezana nemigangatho ephezulu yomgangatho. Ngokuzibophelela ekugqweseni nasekugxileni kwizinto ezintsha, inkampani iyaqhubeka ukudlala indima ebalulekileyo kumacandelo okwakha kunye neziseko zophuhliso. Nokuba ubandakanyeka kwiprojekthi yolwakhiwo olukhulu okanye ufuna isisombululo semibhobho ethembekileyo, umbhobho we-ASTM A252 lolona khetho lubalaseleyo kwiimfuno zakho.
Ixesha lokuposa: Sep-04-2025