Home / Standards / GB/T 19700 GB/T 19700 Active Test method of thermal property for marine heat exchanger 船用热交换器热工性能试验方法 Standard Type GBT ICS 47.020.50 CCS U42 Status 现行 Issue Date 2023-03-17 Implementation 2023-10-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委