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BS 4504-3.1:1989 Circular flanges for pipes, valves and fittings (PN designated). Steel, cast iron and copper alloy flanges - Specification for steel flanges

Fluid equipment; Pressure; Molybdenum steels; Flanges; Surface texture; Steels; Ratings; Dimensions; Pressure pipes; Threads; Flange; Manganese steels; Bolting; Temperature; Size
BS 4504‑3.1:1989 specifies the design and dimensions for circular steel flanges intended for pipes, valves, and fittings that are classified by nominal pressure (PN) ratings. It applies to nominal pressures from PN 2.5 up to PN 40 and nominal sizes of DN 10 to DN 4000. The scope includes facings, bolt-hole patterns, dimensions and tolerances, threading, bolt sizes, marking requirements, and materials for both flange bodies and bolting components. It also provides pressure–temperature ratings based on flange material categories: ferritic, austenitic, and nickel steels.
Contributor(s):
NAAR - Data Entry Person
Primary Item Type:
British Standard
Identifiers:
ISBN 0580170373
ICS 23.040.60 Flanges, couplings and joints
Language:
English
First presented to the public:
6/8/2025
Original Publication Date:
30/6/1989
Previously Published By:
British Standards Institution
Citation:
Extents:
Number of Pages - 40
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2022-07-20 15:36:42.14
Submitter:
Nurul Aini Abdul Rahman

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BS 4504-3.1:1989 Circular flanges for pipes, valves and fittings (PN designated). Steel, cast iron and copper alloy flanges - Specification for steel flanges1 2022-07-20 15:36:42.14
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