Home / Standards / GB/T 569-1965 GB/T 569-1965 Abolished Marine pipe flanges--Connection dimensions and mating face 船用法兰 连接尺寸和密封面 Standard Type GBT ICS 47.020.30 CCS U55 Status 废止 Issue Date 1965-07-16 Implementation 1966-01-01 Responsible Dept 国家标准委 Drafting Unit N/A