Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Cast iron flanges Ingestion-build-224916 PD 5500 on fusion welded

PD 5500 on fusion welded pressure vessels is relevant to:

Definition added for parallel geometry stay hinge (with or without a friction system)

BS 25999-1:2006 is the first of the two-part BS 25999

BS EN 1998‑4:2006

4 List of hazards

Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Cast iron flanges Ingestion-build-224916 PD 5500 on fusion welded1 Scope This standard specifies requirements for circular flanges made from ductile, grey and malleable cast iron for DN 10 to DN 4000 and PN 2,5 to PN 63. (See 4. 1 and 4. 2). This standard specifies the types of flanges and their facings, dimensions and tolerances, bolt sizes, surface finish of jointing faces, marking, testing, quality assurance and materials together with associated pressure temperature (p T) ratings.