Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Steel flanges shop-only men and boys

men and boys

reinforced and prestressed concrete made with normal and lightweight aggregates together with specific rules for buildings

are not covered by BS EN 10311

installation and maintenance of fixed and semi-fixed systems

Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Steel flanges shop-only men and boysThis European Standard for a single series of flanges specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 100 and nominal sizes from DN 10 to DN 4 000. This standard specifies the flange types and their facings, dimensions, tolerances, threading, bolt sizes, flange jointing face surface finish, marking, materials, pressure temperature ratings and approximate flange masses. This standard does not apply to flanges made from