Mutemo uyu wakakurudzirwa kuti ugadziriswe muna 2022 pamusangano wepagore weISO/TC17/SC12 Steel/Continuously Rolled Flat Products Sub-Committee, uye wakatangwa zviri pamutemo munaKurume 2023. Boka rekushanda rekunyora rakagara makore maviri nehafu, umo musangano weboka rimwe chete rekushanda nemisangano miviri yegore negore yakaitwa kuti vakurukure zvakanyanya, uye muna Kubvumbi 2025, chinyorwa chechitanhatu cheISO 4997:2025 “Structural Grade Cold Rolled Carbon Thin Steel Plate” chakagadziriswazve chakatangwa.
Mutemo uyu ndeimwe nzira yekuvandudza mitemo yepasi rose yakatungamirwa neChina mushure mekunge China yatora chigaro chesachigaro weISO/TC17/SC12. Kuburitswa kweISO 4997:2025 ndeimwe nzira itsva mukutora chikamu kweChina mubasa rekuenzanisa mitemo yepasi rose mumunda wemaplate esimbi nemachira mushure meISO 8353:2024.
Zvigadzirwa zvesimbi yecarbon structural steel cold rolled steel plate uye strip zvakazvipira kuvandudza simba uye kuderedza ukobvu, nokudaro zvichideredza huremu hwezvigadzirwa zvekupedzisira, kuzadzisa chinangwa chikuru chekuchengetedza simba nekuderedza kusvibiswa, uye kuzadzisa pfungwa yekugadzira "simbi yakasvibirira". Shanduro ya2015 yechiyero chesimba rekugadzira simbi rinoshandiswa zvakanyanya pamusika re280MPa steel grades hazvina kutaurwa. Pamusoro pezvo, zviri mukati mechiyero, zvakaita sekuoma kwepadenga uye huremu hwebatch, hazvisangane nezvinodiwa chaizvo zvekugadzirwa kwazvino. Kuti iwedzere kushanda kwechiyero, Metallurgical Industry Information Standards Research Institute yakaronga Anshan Iron & Steel Co. kuti inyorere chirongwa chitsva chepasi rose chebasa rechigadzirwa ichi. Mukugadzirisa, zvinodiwa zvehunyanzvi zvegiredhi idzva zvakaongororwa mushure mekubvunzana nenyanzvi dzinobva kuJapan, Germany neUnited Kingdom kwenguva yakawanda, vachiedza kusangana nezvinodiwa zvekugadzira nekuongorora munyika imwe neimwe uye kuwedzera huwandu hwekushandiswa kwechiyero. Kuburitswa kweISO 4997:2025 “Structural Grade Cold-Rolled Carbon Thin Steel Plate” kunosundira mamakisi matsva nemiyero yakatsvakurudzwa uye yakagadzirwa neChina pasi rose.
Nguva yekutumira: Chivabvu-24-2025
