1. ASME B16.5: Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24;ASME,2020
2. ASME B16.47: Large Diameter Steel Flanges: NPS 26 Through NPS 60;ASME,2020
3. EN 1092-1: Circular Flanges for Pipes, Valves, Fittings and Accessories;CEN,2018
4. ASME B16.20: Metallic Gaskets for Pipe Flanges;ASME,2017
5. Technical Instructions on Air Quality Contro;Federal Ministry for Environment, Nature Conservation and Nuclear Safety,2002