Gas Flow Calculations is your great tool if you are working in natural gas industry the App is performing all calculation required for natural gas transmission , and Generating a Professional PDF Report of your Calculation The Following Calculations Are included in the App : - ASTM D3588 - GPA 2172 , 2145 - ISO 6976 , 5167 ,12213 , 13443 - AGA 3 , 5 , 7 , 8 , 9 , 10 , NX19 - Panhandle A , B Flow Equations - NFPA 56 - Estimated Pipeline Pigging run Time - Time Required For Ventin