NF E29-901-6*NF EN 12560-6:2004 Flanges and their joints - Gaskets for class-designated flanges - Part 6 : covered serrated metal gaskets for uses with steel flanges
2004NF E29-901-6*NF EN 12560-6:2004 Flanges and their joints - Gaskets for class-designated flanges - Part 6 : covered serrated metal gaskets for uses with steel flanges