UNE-EN 1514-4:1997 FLANGES AND THEIR JOINTS. DIMENSIONS OF GASKETS FOR PN-DESIGNATED FLANGES. PART 4: CORRUGATED, FLAT OR GROOVED METALLIC AND FILLED METALLIC GASKETS FOR USE WITH STEEL FLANGES.
1997UNE-EN 1514-4:1997 FLANGES AND THEIR JOINTS. DIMENSIONS OF GASKETS FOR PN-DESIGNATED FLANGES. PART 4: CORRUGATED, FLAT OR GROOVED METALLIC AND FILLED METALLIC GASKETS FOR USE WITH STEEL FLANGES.