Home / Standards / GB/T 20932-2025 GB/T 20932-2025 Active Pig-irons—Definition and classification 生铁 定义与分类 Standard Type GBT ICS 77.080.10 CCS H 41 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A