Home / Standards / GB/T 3653.7-2020 GB/T 3653.7-2020 Active Ferroboron—Determination of sulfur content—Infrared absorption method 硼铁 硫含量的测定 红外线吸收法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2020-03-06 Implementation 2020-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A