Home / Standards / GB/T 4333.11-2025 GB/T 4333.11-2025 Active Ferrosilicon—Determination of titanium content—Diantipyrine methane photometric method 硅铁 钛含量的测定 二安替吡啉甲烷分光光度法 Standard Type GBT ICS 77.100 CCS H 11 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