2021EN 13555:2021 Flanges and their joints - Gasket parameters and test procedures relevant to the design rules for gasketed circular flange connections
2014EN 13555:2014 Flanges and their joints - Gasket parameters and test procedures relevant to the design rules for gasketed circular flange connections
2004EN 13555:2004 Flanges and their joints - Gasket parameters and test procedures relevant to the design rules for gasketed circular flange connections