I-ASTM A252Umbhobho wentsimbi yinto eqhelekileyo yengqumba yepayipi esisilinda egubungela zombini iintlobo ezidibeneyo nezingenamthungo zeengqumba zepayipi yentsimbi apho isilinda yentsimbi isetyenziswa njengelungu elihlala lihleli lokuthwala umthwalo okanye njengeqokobhe lokwenza ingqumba yekhonkrithi efakwe endaweni.
Ibanga lesi-3linqanaba eliphezulu lokusebenza phakathi kwamanqanaba amathathu e-A252, ubuncinaneamandla okukhupha i-310MPa [45,000 psi]kwaye ubuncinciamandla okutsalwa kwe-455MPa [66,000 psi]Xa kuthelekiswa namanye amabanga, iBanga lesi-3 lilungele ngakumbi izakhiwo ezithwalwa yimithwalo enzima okanye kwiindawo ezifuna kakhulu, kwaye lisetyenziswa rhoqo ekwakhiweni kweziseko zeebhulorho ezinkulu, izakhiwo eziphakamileyo, okanye amaqonga aselunxwemeni.
I-A252 yahlulwe yangamanqanaba amathathu ukuze ikwazi ukumelana neemeko ezahlukeneyo zokusetyenziswa.
Ibanga loku-1,Ibanga lesi-2kunyeIbanga lesi-3.
Ukwanda kancinci kancinci kweempawu zoomatshini.
Ibanga loku-1Isetyenziswa kakhulu kwiindawo apho umgangatho womhlaba ulungile kwaye iimfuno zokuthwala umthwalo zingekho phezulu kakhulu. Imizekelo ibandakanya iziseko zesakhiwo ezilula zezakhiwo zokuhlala okanye zorhwebo, okanye iibhulorho ezincinci ezingadingi mithwalo ibalulekileyo.
Ibanga lesi-2ifanelekile kwizicelo ezineemeko zomhlaba ezimbi okanye iimfuno eziphezulu zokuthwala imithwalo. Umzekelo, iibhulorho ezithwele umthwalo ophakathi, izakhiwo ezinkulu zorhwebo, okanye iziseko zophuhliso zezibonelelo zikawonke-wonke. Ingasetyenziswa nakwiindawo ezinamanzi amaninzi, njengemilambo namachibi, apho kufuneka khona ukumelana nokuguguleka okunamandla.
Ibanga lesi-3isetyenziselwa iimfuno ezinzima kwiimeko ezinzima, ezifana neebhulorho ezinkulu, iziseko zezixhobo ezinzima, okanye umsebenzi wesiseko esinzulu kwizakhiwo eziphakamileyo. Ukongeza, kwiimeko ezikhethekileyo zejoloji, ezifana nomhlaba othambileyo kakhulu okanye ongazinzanga, iBanga lesi-3 libonelela ngomthamo ophezulu wokuthwala umthwalo kunye nozinzo.
Yasekwa ngo-2014,Intsimbi yeBotopngumthengisi ohamba phambili wemibhobho yentsimbi yekhabhoni eMntla China, owaziwa ngokuvelisa imibhobho yentsimbi edityanisiweyo nengenamthungo ekumgangatho ophezulu.
Zonke iimveliso zethu zihlangabezana nemigangatho engqongqo ye-ASTM A252, eqinisekisa ukusebenza kakuhle phantsi kweemeko ezinzima.
Sikwabonelela ngoluhlu olupheleleyo lwezinto zokufakelwa kunye neeflanges ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo zokufaka imibhobho.
Xa ukhetha iBotop Steel, ukhetha ukugqwesa nokuthembeka.
Iipayipi ze-ASTM A252 Pipe Pipe zingahlulwahlulwa zibe ziinkqubo ezimbini eziphambili zokuvelisa:ingenamthungo kwaye idityanisiwe.
Kwinkqubo yokuwelda, inokwahlulwahlulwa ngakumbi ibeI-ERW, I-EFWkunyeI-SAW.
I-SAW inokwahlulwahlulwa ngokwezigabaI-LSAW(SAWL) kunyeI-SSAW(HSAW) kuxhomekeke kwicala le-weld.
Ngenxa yokuba i-SAW idla ngokudityaniswa kusetyenziswa indlela yokudityaniswa kwe-arc engaphantsi kwamanzi emacaleni amabini, ikwabizwa ngokuba yiI-DSAW.
Ezi ndlela ezahlukeneyo zokwenza zivumela umbhobho we-ASTM A252 tubular pile ukuba uhlangabezane neemfuno ezahlukeneyo zobunjineli.
Oku kulandelayo yitshathi yokuhamba kwemveliso yombhobho wentsimbi ejikelezayo (SSAW):
Umbhobho wentsimbi we-SSAWilungele ukwenziwa kwemibhobho yentsimbi enobubanzi obukhulu kwaye ingaveliswa ngobubanzi obufikelela kwi-3,500mm. Ayinakwenziwa ngobude obude kuphela, ilungele izakhiwo ezinkulu, kodwa umbhobho wentsimbi we-SSAW ukwabiza kancinci xa uthelekiswa nombhobho wentsimbi we-LSAW kunye ne-SMLS.
I-Botop Steel inokubonelela ngezi ntlobo zilandelayo zobukhulu beetyhubhu zentsimbi:
Umxholo we-phosphorus mawungadluli kwi-0.050%.
Iimfuneko zokwakheka kweekhemikhali ze-ASTM A252 zilula kakhulu xa zithelekiswa neminye imigangatho yemibhobho kwezinye izicelo kuba xa umbhobho usetyenziswa njengenqwaba yemibhobho, ngokuyintloko uba luhlobo lolwakhiwo. Kwanele ukuba umbhobho wentsimbi ukwazi ukumelana nemithwalo efunekayo kunye neemeko zokusingqongileyo. Le khemistri ilula inceda ukuphucula iindleko kunye nemveliso ngelixa ihlangabezana neemfuno ezisisiseko zokhuseleko kunye nokuqina kwesakhiwo.
AItheyibhile 2 inika amaxabiso aphantsi abaliweyo:
Apho ubukhulu bodonga obuchaziweyo buphakathi kobo buboniswe apha ngasentla, ixabiso elincinci lobude liya kugqitywa ngolu hlobo lulandelayo:
IBakala 3: E = 32t + 10.00 [E = 1.25t + 10.00]
E: ubude obuziisentimitha ezi-2 [50.8 mm], %;
t: ubukhulu bodonga obuchaziweyo, ngo. [mm].
Kwimibhobho yobukhulu obungadweliswanga kwitshathi yobunzima bombhobho, ubunzima ngobude beyunithi nganye buya kubalwa ngolu hlobo lulandelayo:
W = 10.69(D - t)t [W = 0.0246615(D - t)t]
W = ubunzima ngobude beyunithi nganye, lb/ft [kg/m].
D = ububanzi obungaphandle obuchaziweyo, kwi. [mm],
t = ubukhulu bodonga obuchaziweyo, ngo. [mm].
Inkampani yethu inikezela ngeentlobo ngeentlobo zeengubo eziquka iPaint, iVarnish, iGalvanized, i-epoxy enezinc eninzi, i-3LPE, i-epoxy ye-coal tar, njl.njl. ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo nokuqinisekisa ukuqina kwexesha elide.
Xa uthenga i-A252 Pipe Pile Tubing, olu lwazi lulandelayo kufuneka lunikezelwe ukuze kube lula kumthengisi ukuhlangabezana neemfuno zakho ezithile ngokuchanekileyo nokunciphisa utshintsho olulandelayo kunye nokulibaziseka okunokwenzeka.
1 Ubungakanani (iinyawo okanye inani lobude),
2 Igama lezinto (iinqwaba zemibhobho yentsimbi),
Iindlela ezi-3 zokwenza (ezingenamthungo okanye ezidityanisiweyo),
Ibanga lesi-4 (1, 2, okanye 3),
Ubungakanani obu-5 (ububanzi obungaphandle kunye nobukhulu bodonga obuqhelekileyo),
Ubude obu-6 (obunye obungacwangciswanga, obuphindwe kabini, okanye obufanayo),
7 Ukuphela kokugqiba,
8 Ukuchazwa kweenkcukacha ze-ASTM kunye nonyaka wokukhutshwa.
