Home / Standards / GB/T 10322.4-2014 GB/T 10322.4-2014 Active Iron ores―Experimental methods for checking the bias of sampling 铁矿石 校核取样偏差的实验方法 Standard Type GBT ICS 73.060.10 CCS D31 Status 现行 Issue Date 2014-06-24 Implementation 2015-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A