Home / Standards / GB/T 45859-2025 GB/T 45859-2025 Active Abrasion-resistant cast irons—Classification 耐磨铸铁 分类 Standard Type GBT ICS 77.140.80 CCS J31 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A