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BS EN 1092-1:2018

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Flanges and their joints. Circular flanges for pipes, valves, fittings and accessories.
More Information
Publication StatusCurrent
Publication Date13/04/2018
Format (Paperback, Hardback etc)A4
Total Pages150
Brand / PublisherBSI

Official BSI Distributor

What is this standard about?

It specifies requirements for particular designations of circular steel flange.

Who is this standard for?

  • Mechanical engineers
  • Process engineers
  • Design engineers
  • Architects
  • Building services companies
  • Health and safety consultants
  • Fire safety consultants
  • Insurance companies
  • Gas and liquid distribution companies
  • Electrical power companies
  • Electric equipment manufacturers
  • Inspectors and quality assessors
  • Companies or individuals responsible for the design, manufacturing, installation and commissioning of pipework

Why should you use this standard?

Because it specifies requirements for circular steel flanges in PN designations PN 2,5 to PN 400 and nominal sizes from DN 10 to DN 4000.

It 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.

It includes details of and requirements for the materials and material groups used in the manufacture of flanges and their corresponding pressure/temperature ratings. Additional materials that are widely used in Europe are also listed but no corresponding pressure/temperature information is included in the standard for these materials.

This document was prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2014/68/EU.

Annex ZA (informative) is an integral part of this document. It contains information on the relationship between this European Standard and the Essential Requirements of EU Directive 2014/68/EU Pressure Equipment Directive.

NOTE 1: For the purpose of this European standard, 'flanges' also includes lapped ends and collars.

NOTE 2: This European standard applies to flanges manufactured in accordance with the methods described in Table 1. Non-gasketed pipe joints are outside the scope of this European standard.

What's changed since the last update?

The major changes since 2013 are:

  1. Standard references were updated
  2. Several changes were made in some synoptic tables
  3. Changes were implemented in thicknesses for types 36 and 37
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