Home / Standards / GB/T 16749-2018 GB/T 16749-2018 Active Bellows expansion joints for pressure vessel 压力容器波形膨胀节 Standard Type GBT ICS 23.020.30 CCS J74 Status 现行 Issue Date 2018-09-17 Implementation 2019-04-01 Responsible Dept 国家标准委 Drafting Unit N/A