Home / Standards / GB/T 29723.2-2013 GB/T 29723.2-2013 Active Grade and limit of major process energy consumption for coal mine - Part 2：Main drainage system 煤矿主要工序能耗等级和限值 第2部分：主排水系统 Standard Type GBT ICS 27.010 CCS D98 Status 现行 Issue Date 2013-09-18 Implementation 2014-01-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A