Ekwakheni nasebunjinikazi baseburhulumenteni, ukhetho lwezinto ezibonakalayo lubalulekile ukuqinisekisa ukuthembeka kunye nobomi obude besakhiwo. Isixhobo esinye esihlonitshwayo kwishishini ngu-A252 umbhobho. Inkcazo igubungela i-cylindrical, i-pile yodonga lwensimbi, ebaluleke kakhulu kwizicelo ezahlukeneyo, ngakumbi kwinjineli yesiseko. Kwezi bhlog, siya kuthatha i-hive enzulu kwinkcazo ephambili kunye nokusetyenziswa kwe-A252 ubungakanani be-A252 ngelixa iphakamisa amandla ovelisi ophambili esekwe eCangzhou, kwiPhondo laseHezei.
I-A252 ye-A252 imibhobho
I-ASTM A252 yinkcazo esemgangathweni echaza iimfuno ze-weldad kunye ne-sels yentsimbi yensimbi. Le mibhobho yenzelwe ukuba isetyenziswe njengamalungu anetha ngokusisigxina Inkcazo ephambili ye-ASTM A252 ibandakanya:
1. Ibakala lezinto ezibonakalayo: Inkcazo iquka amabanga amathathu eentsimbi: IBakala 1, iBakala 3, iBakala 3. Ibakala ngalinye linemfuno yamandla ahlukileyo, kunye nenqanaba lesivuno eliphezulu kwaye lilungele izicelo ezinzima.
2. Ubungakanani: I-ASTM A252 imibhobho ye-A252 iyafumaneka rhoqo kwi-cering yodonga lodonga, ivumela ukuba kubekho uyilo kunye nokusetyenziswa. Le mibhobho iyafumaneka kwii-Diameter ezisusela kwi-6 i-intshi ukuya kwi-intshi ezingama-60 ukuya kufezekisa iimfuno ezahlukeneyo zeprojekthi.
I-3. Iinketho ezingenamthungoI-ASTM A252 pipeIngaveliswa i-weldid okanye ingenamthungo, ibonelela ngeendlela ezisekwe kwiimfuno ezithile zeprojekthi yakho. Umbhobho we-Weldied ixabisa kakhulu, ngelixa umbhobho ongenamthungo unika amandla amakhulu kunye nokuthembeka.
I-4. Ukuchasana nokunyanzelwa: Kuxhomekeke kwisicelo, i-ASTM A252 inokudityaniswa okanye inyangwe ukuphucula ukunganyangeki kwabo, kuqinisekisa ukusetyenziswa kwexesha elide nakwindawo ezinobunzima.
I-ASTM A252 izicelo zombhobho
Ukugxila kwe-ASTM A252 imibhobho yenza ukuba ilungele uluhlu olubanzi lwezicelo, kubandakanya:
-Iimps ezikwisiseko: Le mibhobho ihlala isetyenziswa njengeencwadana ezinika isiseko kwiiprojekthi zokwakha, ukubonelela ngenkxaso eyimfuneko yezakhiwo, iibhlorho kunye nezinye izinto.
-Izakhiwo zolwandle: I-ASTM A252 ilungele ukusetyenziswa ngokufanelekileyo kwiindawo zaselwandle kwaye zinokusetyenziswa ngokwakhiwa kweedonki, ii-piers, kunye namaqonga aselunxwemeni.
-Ukugcina iindonga: Amandla kunye nokuqina kwale mibhobho zibenza balungele ukusetyenziswa kweendonga, ezinceda ukuzinzisa umhlaba kwaye kuthintele ukhukuliseko.
-Iifayile zekhonkrithi zekhonkrithi: Xa zisetyenziswa njengokuthambisa iifayile zekhonkrithi zekhonkrithi,I-ASTM A252Umbhobho ubonelela ngenkqubo-sikhokelo esomeleleyo ephucula ingqibelelo yekhonkrithi.
Umvelisi okhokelayo kwiCangzhou
Umvelisi owaziwayo obekwe eCangzhou, kwiPhondo laseHebii, ebevelisa imibhobho ephezulu ye-A252 ukusukela kwi-3502 imibhobho yemitha ezingama-650, isebenzisa i-RMB 680 yezigidi, kwaye isebenzisa malunga ne Abasebenzi abangama-680 abanobuchule. Umenzi uzibophelele ekuboneleleni ngeemveliso ezihlangabezana nemilinganiselo esemgangathweni engqongqo, eqinisekisa ukuba imibhobho yayo ye-A252 ithembekile kwaye iqinile kwizicelo ezahlukeneyo.
Ngokugxila kubuchule kunye nolwaneliseko lwabathengi, inkampani iye yaba yinkokeli yeshishini, ibonelela ngezisombululo zesiko ukuhlangabezana neemfuno ezizodwa zabathengi. Ngamaziko obugcisa ane-ofisi kunye nabasebenzi abanamava, bayakwazi ukuvelisa imibhobho kwezona zichazwe ziphezulu, zenza ukuba iqabane elithenjiweyo kwiiprojekthi zolwakhiwo kunye nobunjineli.
ukuququmbela
Ukuqukumbela, i-ASTM i-A252 imibhobho ebalulekileyo yolwakhiwo lwale mihla, ukubonelela ngeenkcukacha eziphambili ezihlangabezana neemfuno zezicelo ezahlukeneyo. Ngomenzi odumileyo eCangzhou avelisa le mibhobho, ishishini inokuxhomekeka kwizinto ezisemgangathweni eziphezulu ukuqinisekisa ukhuseleko kunye nokuzinza kwesakhiwo. Nokuba isetyenziselwa ubunjineli besiseko, izakhiwo zaselwandle okanye iindonga zokugcina, i-ASTM i-A252 imibhobho ebaluleke kakhulu kwiinjineli kunye nabakhi.
IXESHA LOKUQALA: FEB-11 ukuya ku-1125