Home / Standards / GB/T 18024.2-2010 GB/T 18024.2-2010 Active Graphical symbols for the technical documentation of coal mine machinery - Part:2 Graphical symbols for coal face support and prop 煤矿机械技术文件用图形符号 第2部分：采煤工作面支架及支柱图形符号 Standard Type GBT ICS 01.080.20 CCS D04 Status 现行 Issue Date 2010-09-26 Implementation 2011-02-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A