"FOREWORD: The standardization program of the American Petroleum Institute relative to oil field equipment at present embraces nine main classes of materials@ where necessary and desirable for convenient use@ each class has been subdivided into subjects Separate specifications have been issued on each subject. A special Committee has been appointed on the standardization of each class of material; and the Committee personnel is published separately. Each specification is identified by the Committee number@ with alphabetical sub-divisions when needed. This bulletin lists all specifications available to date. When a specification is amended or revised@ it will be re-issued under its old number@ with a new date and edition number; for example@ ""API Std. 5-A@ 2nd Edition@ Sept.@ 1926@"" will indicate that this specification has been revised from the first edition. In case a large supply of a given specification is on hand@ a supplement containing the changes and modifications may be issued@ and later incorporated in a revised edition of the specification. A list (and status) of all APT Codes on Recommended Field Practice is also contained herein@ "
API BULL S2-1946 history
1985API BULL S2-1985 List of Publications (Sixty Second Edition)