Home / Standards / GB/T 6374-1986 GB/T 6374-1986 Abolished Shanks for rock drilling machines and pneumatic tools and fitting dimensions of chuck bushings 凿岩机械与气动工具尾柄和衬套配合尺寸 Standard Type GBT ICS 73.100.30 CCS J84 Status 废止 Issue Date 1986-05-13 Implementation 1987-03-01 Responsible Dept N/A Drafting Unit N/A