Kumvetsetsa Chitoliro cha ASTM A252: Makulidwe, Ubwino, ndi Ntchito
Chitoliro cha Astm A252ndi gawo lofunikira kwambiri pakugwiritsa ntchito zomangamanga m'mafakitale osiyanasiyana, makamaka pantchito zomanga ndi zomangamanga. Blog iyi ifufuza za kukula, mtundu, ndi kagwiritsidwe ntchito ka chitoliro cha ASTM A252, ndikuwunikira luso la wopanga wamkulu yemwe ali ku Cangzhou, Hebei Province.
Kodi chitoliro cha ASTM A252 ndi chiyani?
Kukula kwa Chitoliro cha Astm A252ndi ndondomeko yopangidwa ndi American Society for Testing and Materials (ASTM) yomwe imafotokoza zofunikira paipi yachitsulo yowotcherera komanso yopanda msoko yomwe imagwiritsidwa ntchito pomanga mulu. Muyezowu umayang'ana kwambiri kukhulupirika kwa chitoliro ndi kulimba kwake, ndikupangitsa kuti ikhale yoyenera pamaziko, milatho, ndi ntchito zina zolemetsa.
Kodi chitoliro cha ASTM A252 ndi chiyani?
ASTM A252 ndi chitsimikiziro chovomerezeka chopangidwa ndi American Society for Testing and Materials (ASTM), makamaka mapaipi achitsulo omwe amagwiritsidwa ntchito poyendetsa milu ndi ntchito zothandizira zozama. Muyezo uwu umafotokoza mosamalitsa kapangidwe kake ka mankhwala, mawonekedwe amakina, kulolerana kwapaipi ndi njira zoyesera za mapaipi achitsulo, kuwonetsetsa kukhulupirika kwawo, kulimba komanso kunyamula katundu. Ndi chisankho chabwino pama projekiti oyambira monga Bridges, nyumba zokwera kwambiri ndi madoko.
Kukula kwa Chitoliro cha Astm A252miyeso ndi specifications
Mapaipi a ASTM A252 amagawidwa m'magulu atatu malinga ndi zofunikira za mphamvu: GR 1, GR 2, ndi GR 3, pakati pawo giredi GR 3 ili ndi mphamvu zambiri. Kukula kwake kumasinthasintha ndipo kumatha kukwaniritsa zofunikira zamainjiniya osiyanasiyana
M'mimba mwake (OD): Kuchokera mainchesi 6 mpaka 60 mainchesi, ndipo ngakhale zazikuluzikulu zitha kupangidwa.
Wall makulidwe (WT) : Nthawi zambiri pakati pa 0.188 mainchesi ndi 0.500 mainchesi, ndipo amatha kusinthidwa malinga ndi zofunikira za kukana kopingasa ndi kupindika.
Utali: Utali wokhazikika ndi 20 mapazi kapena 40 mapazi. Kupanga mwamakonda kumathandizidwanso malinga ndi zofunikira za polojekiti.
Kukula kosiyanasiyana kumeneku kumatsimikizira kuti mainjiniya amatha kusankha zotsika mtengo kwambiri pama projekiti ena.
Chitoliro cha ASTM A252 chimagwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikiza:
1. Kumanga: Mipope imeneyi imagwiritsidwa ntchito nthawi zambiri ngati milu yapansi pa ntchito yomanga kuti ikhale yokhazikika komanso yothandizira kumangidwe.
2. Milatho: Mphamvu ndi kulimba kwa chitoliro cha ASTM A252 chimapangitsa kukhala chisankho choyenera pakupanga mlatho, komwe kumatha kupirira katundu wolemetsa komanso chilengedwe.
3. Zomangamanga Zam'madzi: Kukana kwa dzimbiri kwa mapaipiwa kumawalola kugwiritsidwa ntchito m'madzi am'madzi monga ma docks ndi ma piers.
4. Mafuta ndi Gasi: Chifukwa cha zomangamanga zolimba, chitoliro cha ASTM A252 chimagwiritsidwanso ntchito m'makampani amafuta ndi gasi kunyamula madzi ndi mpweya.
Powombetsa mkota
Mwachidule, chitoliro cha ASTM A252 ndi gawo lofunikira pamitundu ingapo yamapangidwe, kupereka kudalirika ndi mphamvu. Fakitale iyi ku Cangzhou, m'chigawo cha Hebei, ndiyomwe imapanga chitoliro chamtunduwu, ndikuwonetsetsa kuti zinthu zake zimakwaniritsa miyezo yapamwamba kwambiri. Ndi kudzipereka kuchita bwino komanso kuyang'ana pazatsopano, kampaniyo ikupitilizabe kuchita nawo gawo lofunikira pantchito yomanga ndi zomangamanga. Kaya mukuchita nawo ntchito yomanga yayikulu kapena mukufuna njira yodalirika yamapaipi, chitoliro cha ASTM A252 ndi chisankho chabwino kwambiri pazosowa zanu.
Nthawi yotumiza: Sep-04-2025