China 'GB/T 30491.2-2024
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 30491.2-2024
Natural gas - Calculation of thermodynamic properties - Part 2: Single-phase (gas, liquid and dense phase) fluid properties with extended application range 天然气-热力学性质计算-第2部分:扩展应用范围的单相(气相、液相和稠密相)流体性质
Issued Date:2024.3.15
Implemented Date:2024.7.1
Issued by:
The Standardization Administration of the People's Republic of China