Home / Standards / GB/T 30900-2025 GB/T 30900-2025 Active Slag agglomerate of LF refining furnace for steelmaking 炼钢用LF炉精炼渣团块 Standard Type GBT ICS 77.140.99 CCS H34 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A