Home / Standards / GB 25974.2 GB 25974.2 Hydraulic supports for coal mines—Part 2: Technical specification of legs and rams—2010 煤矿用液压支架 第2部分:立柱和千斤顶技术条件 -2010 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A