Home / Standards / GB/T 17771-2010 GB/T 17771-2010 Active Earth-moving machinery - Falling-object protective structures - Laboratory tests and performance requirements 土方机械 落物保护结构 试验室试验和性能要求 Standard Type GBT ICS 53.100 CCS P97 Status 现行 Issue Date 2010-12-23 Implementation 2011-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A