Home / Standards / GB 772-1987 GB 772-1987 Abolished Technical specifications of porcelain elementfor high voltage insulators 高压绝缘子瓷件 技术条件 Standard Type GB ICS 29.080.10 CCS K48 Status 废止 Issue Date 1987-12-16 Implementation 1989-01-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A