BRITISH STANDARD DIN STANDARD: WE SUPPLY MALLEABLE IRON PIPE FITTNGS:BRITISH STANDARD:MATERIALS:ISO5922, DIMENSIONS:ISO49,THREADS:ISO7/1DIN STANDARD: MATERIAL: DIN1692,DIMENSIONS:DIN2950,THREADS:DIN2999AMERICAN STANDARD:MATERIAL:ANSI/ASME A 197-79,DIMENSIONS:ANSI/ASME B16.3-85,THREADS:ANSI/ASME B1.20.1