Home / Standards / GB 7786-1987 GB 7786-1987 Abolished Limits of sound power level for noise emitted by air compressors (for power source use) and diaphragmcompressors 动力用空气压缩机和隔膜压缩机噪声声功率级限值 Standard Type GB ICS 17.140.20 CCS J72 Status 废止 Issue Date 1987-05-23 Implementation 1988-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A