First published as B26-1942 and AS B89-1942.AS B26-1942 and AS B89-1942 revised and redesignated as AS G8-1959.Second edition AS G8-1962.Third edition 1969.AS G9-1969 revised and redesignated as AS 1830-1986.Second edition 2002.Fourth edition 2007.Reconfirmed 2017. Originated as AS B26-1942 and AS B89-1942. Previous edition AS 1830-2002. Fourth edition 2007.