Blind flanges are utilized for connection with fittings or components that connect with flanges, in water supply, sewage, and natural gas systems. Material: carbon steel. Reference standard: SR EN 1092-1 Flanges and their joints. Circular flanges for pipes, valves, fittings, and accessories, designated by PN. Part 1: Steel flanges. Explanation of terms in the designation: D = nominal outer diameter of the flange end with which the flange is compatible. DN = nominal diameter of the flange according to SR EN 1092-1, SR EN ISO 6708. Compatible with: PE100 PN10 flange ends, article codes 44417% and 45417%. PE100 PN16 flange ends, article codes 44411% and 45411%. Rubber flat gaskets, article codes 44799%. Bolt set with nut and galvanized washers, article codes 44798%.