API-605, API-590, MSSSP44, DIN 2632 to 2638, DIN 2576, 2642, 2527, 2566. Flanges cover full range of A house of quality Iron and Steel Forgings , ASME B16.5, ASME B16.47, ASME B16.48, BS EN 1092, BS 4504,
pressure ratings of these specifications (150 – 2500 psi for ASME & PN6-PN400 for DIN / EN flanges)
