Home / Standards / GB/T 8517-1987 GB/T 8517-1987 Abolished Vibratory pile hammer--Classification 振动桩锤分类 Standard Type GBT ICS 91.220 CCS J85 Status 废止 Issue Date 1987-12-29 Implementation 1988-07-01 Responsible Dept N/A Drafting Unit N/A