GB / T 222-2025 "Steel and Alloys - Permissible Deviations in Chemical Composition of Finished Products" yuav pib siv rau lub Kaum Ob Hlis 1, 2025, hloov cov qauv dhau los GB / T 222-2006 thiab GB / T 25829-2010.
Cov ntsiab lus tseem ceeb ntawm tus qauv
1. Scope: Npog tso cai sib txawv ntawm cov tshuaj muaj pes tsawg leeg rau cov khoom tiav (xws li billets) ntawm cov hlau tsis muaj hlau, cov hlau tsis tshua muaj hlau, hlau alloy,stainless hlau, kub-resistant steel, deformable corrosion-resistant alloys, thiab high-temperature alloys.
2. Kev hloov pauv loj:
Ntxiv kev faib tawm ntawm kev tso cai sulfur sib txawv rau cov hlau tsis muaj hlau thiab cov hlau tsis tshua muaj hlau.
Ntxiv kev faib tawm ntawm kev tso cai sib txawv rau sulfur, aluminium, nitrogen, thiab calcium hauv alloy steels.
Ntxiv kev tso cai sib txawv rau cov tshuaj muaj pes tsawg leeg nyob rau hauv wrought corrosion-resistant alloys thiab high-temperature alloys.
3. Lub Sijhawm Ua Haujlwm
Hnub Tshaj Tawm: Lub Yim Hli 29, 2025
Hnub Kawg Ua Ntawv Thov: Kaum Ob Hlis 1, 2025
Post lub sij hawm: Nov-07-2025
