Kumvetsetsa Chitoliro cha ASTM A252: Kukula, Ubwino, ndi Kugwiritsa Ntchito
Chitoliro cha Astm A252ndi gawo lofunika kwambiri pakugwiritsa ntchito kapangidwe ka nyumba m'mafakitale osiyanasiyana, makamaka pa ntchito zomanga ndi zomangamanga. Blog iyi idzafufuza kukula, ubwino, ndi kugwiritsa ntchito kwa chitoliro cha ASTM A252, kuwonetsa luso la wopanga wotsogola wokhala ku Cangzhou, Hebei Province.
Kodi chitoliro cha ASTM A252 n'chiyani?
Makulidwe a Chitoliro cha Astm A252Ndi mfundo yopangidwa ndi American Society for Testing and Materials (ASTM) yomwe imafotokoza zofunikira pa chitoliro chachitsulo cholumikizidwa komanso chopanda msoko chomwe chimagwiritsidwa ntchito popangira mapaipi. Muyezowu umayang'ana kwambiri kulimba kwa chitolirocho, zomwe zimapangitsa kuti chikhale choyenera maziko, milatho, ndi ntchito zina zolemera.
Kodi chitoliro cha ASTM A252 n'chiyani?
ASTM A252 ndi mfundo yovomerezeka yopangidwa ndi American Society for Testing and Materials (ASTM), makamaka ya mapaipi achitsulo omwe amagwiritsidwa ntchito poyendetsa milu ndi ntchito zothandizira kapangidwe kake. Muyezo uwu umafotokoza momveka bwino kapangidwe ka mankhwala, mawonekedwe a makina, kulekerera kwa miyeso ndi njira zoyesera mapaipi achitsulo, kuonetsetsa kuti ali ndi kapangidwe kake kabwino kwambiri, kulimba komanso mphamvu zonyamula katundu. Ndi chisankho chabwino kwambiri pamapulojekiti oyambira monga Milatho, nyumba zazitali komanso madoko.
Makulidwe a Chitoliro cha Astm A252miyeso ndi kufotokozera
Mapaipi a ASTM A252 amagawidwa m'magulu atatu malinga ndi mphamvu zomwe zimafunika: GR 1, GR 2, ndi GR 3, pakati pawo GR 3 ndi yamphamvu kwambiri. Kukula kwake kumasinthasintha ndipo kumatha kukwaniritsa zofunikira zosiyanasiyana zaukadaulo.
Chidutswa chakunja (OD): Kuyambira mainchesi 6 mpaka mainchesi 60, ndipo kukula kwakukulu kumatha kupangidwa.
Kukhuthala kwa khoma (WT): Kawirikawiri pakati pa mainchesi 0.188 ndi mainchesi 0.500, ndipo kumatha kusinthidwa malinga ndi zofunikira za kukana kupanikizika ndi kupindika.
Utali: Utali wokhazikika ndi mamita 20 kapena mamita 40. Kupanga kosinthidwa kumathandizidwanso malinga ndi zofunikira za polojekiti.
Kusiyanasiyana kwa kukula kumeneku kumatsimikizira kuti mainjiniya amatha kusankha zinthu zotsika mtengo kwambiri pamapulojekiti enaake.
Chitoliro cha ASTM A252 chimagwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikizapo:
1. Kuyika milu: Mapaipi awa nthawi zambiri amagwiritsidwa ntchito ngati milu ya nthaka m'mapulojekiti omanga kuti apereke kukhazikika ndi kuthandizira nyumbayo.
2. Milatho: Mphamvu ndi kulimba kwa chitoliro cha ASTM A252 zimapangitsa kuti chikhale chisankho chabwino kwambiri chomangira mlatho, komwe chimatha kupirira katundu wolemera komanso mikhalidwe yachilengedwe.
3. Kapangidwe ka Madzi a M'nyanja: Kukana dzimbiri kwa mapaipi awa kumalola kuti agwiritsidwe ntchito m'madzi monga madoko ndi madoko.
4. Mafuta ndi Gasi: Chifukwa cha kapangidwe kake kolimba, chitoliro cha ASTM A252 chimagwiritsidwanso ntchito mumakampani amafuta ndi gasi kunyamula madzi ndi gasi.
Powombetsa mkota
Mwachidule, chitoliro cha ASTM A252 ndi chinthu chofunikira kwambiri pa ntchito zosiyanasiyana za kapangidwe kake, kupereka kudalirika ndi mphamvu. Fakitale iyi ku Cangzhou, Hebei Province, ndi kampani yotsogola yopanga chitoliro chamtunduwu, kuonetsetsa kuti zinthu zake zikukwaniritsa miyezo yapamwamba kwambiri. Podzipereka kuchita bwino kwambiri komanso kuyang'ana kwambiri pakupanga zinthu zatsopano, kampaniyo ikupitilizabe kuchita gawo lofunikira kwambiri m'magawo omanga ndi zomangamanga. Kaya mukugwira ntchito yomanga yayikulu kapena mukufuna njira yodalirika yopangira mapaipi, chitoliro cha ASTM A252 ndi chisankho chabwino kwambiri pazosowa zanu.
Nthawi yotumizira: Sep-04-2025