I te ao o te hangarau hanganga me te hanga hou, ehara i te mea he mea tūpono noa te whiriwhiri i te maitai. E rua o ngā pereti maitai hurihuri wera e tino tohua ana—ASTM A572 Tau 50meASTM A992—kua whakatūria hei paerewa ahumahi mō ngā kaupapa e hiahia ana kia taurite te kaha, te ngāwari, me te pono.
Pereti Rino Hurihia Wera ASTM A572 Tau 50he pereti maitai kaha-teitei, he iti-koranu e whakamahia whānuitia ana i roto i ngā tono hanganga, piriti, me te hanga whānui. Ko tōna kaha tuku he 50 ksi (345 MPa) me te kaha kume mai i65–80 ksi (450–550 MPa)he kōwhiringa maha-whakamahinga mā ngā miihini e rapu ana i te mahi me te whai hua o te utu. Hei tāpiri, he tino pai te ASTM A572 Grade 50 ki te whakarewa me te hanga, e āhei ai te hanga uaua me te kore e whakararu i te kounga o te maitai. Mā te whakakotahitanga o te kaha, te pakari, me te ātete ki te waikura ka pai mō ngā hanganga taumaha, tae atu ki ngā whare ahumahi, ngā papa mīhini, me ngā hanganga kawe waka.
I tētahi atu taha,Pereti Rino Hurihia Wera ASTM A992kua noho hei rauemi pai mō ngā āhua hanganga whānui-rerenga, inā koa i Amerika Te Raki. I whakawhanakehia tuatahitia hei whakakapi i te ASTM A36 i roto i ngā āhua hanganga, ko te kaha whakaputa iti rawa o te A992 he 50 ksi (345 MPa), me te kaha ake me te ngāwari, he mea tino pai mō ngā hanganga ātete-ru. Kei te pai ake hoki te piko me te kaha whakarewa o te maitai A992, e āhei ai ngā kaihanga hanganga ki te whakatutuki i ngā whakaritenga hoahoa tino pakari. Ko tōna whakamahinga whānui i roto i ngā whare arumoni, ngā piriti, me ngā anga ahumahi he tohu ki tōna mahi pai i roto i ngā āhuatanga uta pūmau me ngā āhuatanga uta hihiri.
Ahakoa he rite te kaha tuku o ngā momo maitai e rua, kāore e taea te whakawhiti i roto i ngā tono katoa. Ko te ASTM A572 Grade 50 e whiriwhiria ana mō ngā tono pereti e hiahia ana ki te tapahi ritenga, te miihini, te ātete kakahu taumaha rānei, engari ko te ASTM A992 e arotauhia ana mō ngā āhua hanganga pēnei i teNgā hihi-ImeNgā hihi-H, he mea nui te pumau taha me te ngāwari i raro i te kawenga. Ko te whiriwhiri i te maitai tika me whai whakaaro nui ki ngā whakaritenga kawenga o te kaupapa, ngā tikanga hanga, me ngā āhuatanga taiao.
Haunga ō rātou āhuatanga miihini, e ruaNgā pereti maitai ASTM A572 Tau 50meNgā pereti maitai ASTM A992ka hangaia mā roto i ngā tukanga hurihuri wera matatau. Ka hoatu e te hurihuri wera he matotoru ōrite me te āhua maeneene o te mata, me te whakarei ake i te hanganga o roto o te maitai. Ka whakamahia e ngā whare hanga hou ngā mira hurihuri e whakahaerehia ana e te rorohiko hei whakarite i ngā ātete ā-ahu tika, kia hototahi ai ēnei pereti ki ngā kaupapa hanga me te hangarau tino tika.
Mai i te tirohanga mahi, ka whakaarohia e ngā miihini, ngā kaihanga, me ngā kaiwhakahaere kaupapa te pono me te wātea o te mekameka tuku ina tohua ana ngā momo maitai. Ka whakaratohia e ngā kaiwhakarato matua ēnei pereti i roto i ngā momo matotoru, whānui, me te roa hei whakauru i ngā hoahoa hanganga ritenga. Hei tāpiri, he maha ngā kaihanga e tuku ana i ngā huihuinga tapahi-ki-te-rahi, kua keria-mua, kua whakarewahia rānei, e whakaiti ana i te mahi i runga i te papaanga me te whakatere i ngā wā kaupapa.
Hei whakamutunga,ASTM A572 Tau 50ngā pereti maitai hurihuri werameNgā pereti maitai hurihuri wera ASTM A992kei te noho tonu hei poutokomanawa mō te hangarau hanganga hou. He huinga ahurei o te kaha, te ngāwari, me te ngāwari o ia pereti, e hāngai ana ki ngā hiahia hanga me te hanga motuhake. Ahakoa e whakamahia ana i roto i ngā piriti, i ngā whare arumoni, i ngā papa ahumahi rānei, mā te whiriwhiri i te kounga maitai tika ka whakarite i te haumaru, te pakari, me te pono o te hanganga mō te wā roa. I roto i tētahi ahumahi e whai tikanga ana te tika me te mahi, ka noho tonu ēnei pereti maitai e rua hei otinga pono mō ngā kaihangarau o te ao.
RŌPŪ KĪNGI
Wāhitau
Te rohe ahumahi whanaketanga o Kangsheng,
rohe Wuqing, Tianjin pa, Haina.
Ī-mēra
Ngā Hāora
Mane-Rātapu: Ratonga 24-hāora
Wā tuku: Hanuere-05-2026