Home / Standards / GB/T 27698.4-2011 GB/T 27698.4-2011 Abolished Test method for the performance of heat exchangers and heat exchange element - Part 4: Spiral heat exchanger 热交换器及传热元件性能测试方法 第4部分：螺旋板式热交换器 Standard Type GBT ICS 27.060.30 CCS J75 Status 废止 Issue Date 2011-12-30 Implementation 2012-06-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委