Home / Standards / GB/T 31565-2015 GB/T 31565-2015 Active Vitreous ang porcelain enamels—Determination of the edge covering on enamelled steel plate to be used in heat exchangers 热交换器用钢板搪瓷边缘覆盖率的测定 Standard Type GBT ICS 25.220.50 CCS A29 Status 现行 Issue Date 2015-05-15 Implementation 2016-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A