Home / Standards / GB/T 30491.1-2014 GB/T 30491.1-2014 Active Natural gas—Calculation of thermodynamic properties—Part 1: Gas phase properties for transmission and distribution applications 天然气 热力学性质计算 第1部分:输配气中的气相性质 Standard Type GBT ICS 75.060 CCS E24 Status 现行 Issue Date 2013-12-13 Implementation 2014-06-01 Responsible Dept 国家标准委 Drafting Unit N/A