AS 2129-2000

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 19300kPa and at temperatures in the range -200 degrees Celsius to +525 degrees Celsius. 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 AS4087.

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.

First published in part as AS B52.1-1931 (being endorsement of BS 10.1-1928 without amendment).AS B52.2 first published 1931 (being endorsement of BS 10.2-1926 without amendment).AS B52.3 first published 1931 (being endorsement of BS 10.3-1929 without amendment).Second edition AS B52.1-1949 (being endorsement of BS 10.1-1947 without amendment).AS B52.4 first published 1960 (being endorsement of BS 10.4-1931 without amendment).AS B52.5 first published 1960 (being endorsement of BS 10.5-1932 wothout amendment).AS B52.1-1949, AS B52.2-1931, AS B52.3-1931, AS B52.4-1060 and AS B52.5-1960 revised, amalgamated and redesignated AS B52-1964 (being endorsement of BS 10:1962 with amendment).Second edition 1971.AS B52-1971 revised and redesignated AS 2129-1978.Revised and designated in part as AS 2129-1982.Second edition 1994.Third edition 2000.Reconfirmed 2016. Originated in part as AS B52.1-1931 (being endorsement of BS 10.1-1928 without amendment). Previous edition AS 2129-1994. Third edition 2000.