Abstract

Specifies requirements and dimensions for circular, plate blank, boss, integrally cast or forged and welding-neck type flanges or nominal sizes DN 15 to DN 3000 and their bolting for use on pipes, valves and fittings and other pressure-retaining equipment containing fluid at pressures up to 19300 kPa and at temperatures in the range -200°C to +525°C. Flanges in carbon steel, carbon-manganese steel, low-alloy steel, stainless steel, grey iron, malleable iron, ductile cast iron or copper alloy, together with relevant material specifications are included. This Standard is applicable to flanges for water, steam, compressed air, chemical and petroleum plants, hydraulic piping and where other Standards require compliance with this Standard. Recommendations on the selection of bolting and method of making flanged joints are included. This Standard is not intended to apply to flanges for water or waste water covered by AS 4087.
RECONFIRMATION NOTICE
Technical Committee ME-001 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 13 October 2015.
The following are represented on Technical Committee ME-001:
Australasian Corrosion Association
Australasian Institute of Engineer Surveyors
Australian Aluminium Council
Australian Building Codes Board
Australian Chamber of Commerce and Industry
Australian Industry Group
Australian Institute for the Certification of Inspection Personnel
Australian Institute of Energy
Australian Institute of Petroleum
Bureau of Steel Manufacturers of Australia
Department of Justice and Attorney General (QLD)
Electricity Engineers Association (New Zealand)
Energy Networks Association
Engineers Australia
Institution of Professional Engineers New Zealand
Materials Australia
National Association of Testing Authorities Australia
New Zealand Heavy Engineering Research Association
New Zealand Manufacturers and Exporters Association
SafeWork NSW
Welding Technology Institute of Australia
Worksafe Division, Department of Commerce, Western Australia
Worksafe New Zealand
WorkSafe Victoria

Scope

This Standard specifies requirements for circular flanges of nominal sizes DN 15 to DN 3000, inclusive, and their bolting for use on pipes, valves, fittings and other pressure-retaining equipment containing fluid at pressures up to 19 300 kPa and at temperatures in the range -200°C to +525°C.

These flanges are manufactured from carbon steel, carbon-manganese steel, alloy steel, stainless steel, grey iron, malleable iron, ductile cast iron*, or copper alloy.

This Standard is applicable to flanges for water, steam, compressed air, chemical and petroleum plants, hydraulic piping and where other Standards require compliance with this Standard.

This Standard is not intended to apply to flanges for water or waste water covered by AS 4087.

Flanges R, S and T are designated obsolescent and are not recommended for use in new equipment. They are retained to provide for the servicing of existing equipment that is expected to have a long working life. For new equipment, flanges R, S and T should be replaced with flanges to AS/NZS 4331, Parts 1 to 3, ANSI B16.5 or BS 4504 (series).

The history of AS 2129 flanges (and its predecessor BS 10) and the future use of these flanges is given in the Preface.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 27/05/2016. This standard has been reconfirmed in Australia in 2016 and remains current in New Zealand. Reconfirmation Notice 27/05/2016
Pages
ISBN
Committee	ME-001
Supersedes	DR 98317 AS 2129-1994