Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Cast iron flanges Ingestion-build-224916 The quality of uppers

The quality of uppers

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

PD 5500 on fusion welded pressure vessels is relevant to:

BS EN ISO 14161 describes procedures of a general nature and that which do not constitute a comprehensive development

Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories, PN designated - Cast iron flanges Ingestion-build-224916 The quality of uppers1 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.