Flanges and their joints - Gaskets for class-designated flanges - Part 4: Corrugated, flat or grooved metallic and fillet metallic gaskets for use with steel flanges; English version of DIN EN 12560-4
法兰及其接头.指定等级法兰用垫片.第4部分:钢法兰用波纹、平或槽金属垫片和圆角金属垫片;德文版EN 12560-4:2001