Home / Standards / GB/T 21940-2008 GB/T 21940-2008 Active Earth-moving machinery - Cutting edges used on tractor-dozers, graders and scrapers - Principal shapes and basic dimensions 土方机械 推土机、平地机和铲运机用刀片 主要形状和基本尺寸 Standard Type GBT ICS 53.100 CCS P97 Status 现行 Issue Date 2008-06-03 Implementation 2009-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A