ASME B16.47 – Large Diameter Steel Flanges: NPS 26 through NPS 60, Metric/Inch Standard
This standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, and testing for pipe flanges in sizes NPS 26 through NPS 60. Included are flanges with rating class designations 75, 150, 300, 400, 600, and 900 with requirements given in both SI (Metric) and U. S. Customary units, with diameter of bolts and flange bolt hole expressed in inch units. This standard is limited to flanges made from cast or forged materials and blind flanges made from cast, forged, or plate materials.
Armacon manufacture standard and special valves for Petroleum/Gas and Chemistry, the production, proccesing and distribution of water and the production, distribution and cooling of energy and water vapor, conveying and production of special valves, and the distribution of solid materials.