EN 1591-1:2013 Flanges and their joints
BS EN 14025 - TANKS FOR THE TRANSPORT OF DANGEROUS GOODS - METALLIC PRESSURE TANKS - DESIGN AND CONSTRUCTION. I.S. EN 1591-4:2013. FLANGES AND THEIR JOINTS - PART 4: QUALIFICATION OF PERSONNEL COMPETENCY IN THE ASSEMBLY OF THE BOLTED CONNECTIONS OF CRITICAL …