UNE-EN 642:1995 PRESTRESSED CONCRETE PRESSURE PIPES, CYLINDER AND NON-CYLINDER, INCLUDING JOINTS, FITTINGS AND SPECIFIC REQUIREMENT FOR PRESTRESSING STEEL FOR PIPES.
1995UNE-EN 642:1995 PRESTRESSED CONCRETE PRESSURE PIPES, CYLINDER AND NON-CYLINDER, INCLUDING JOINTS, FITTINGS AND SPECIFIC REQUIREMENT FOR PRESTRESSING STEEL FOR PIPES.