(ISo 657/21 International Standard INTE RNATIONAL ORGANIZATION FOR STANDARDIZATION MEKAYHAPOAHAR OPIAHM3AUMR NO CTAHAAPT3ALWM-ORGANISATION INTERNATIONALE DE NORMALISATION Hot-rolled steel sections Part 21: T-sections with equal depth and flange width - Dimensions Profiles en acier laminés a chaud -- Partie 21: Profiles en T a ailes de meme profondeur et de meme largeur de face Dimensions First edition - 1983-10-15 ISO 657/21-1983 (E) UDC 669.14-423.4 Ref. No. . 1SO 657/21-1983 (E) Descriptors : iron and steel products, hot rolled products, metal sections, dimensions, sectional properties. Price based on 2 pages d without license from IHS Notfor Resale Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of developing International interested in a subject for which a technical committee has been authorized has the and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. International Standard isO 657/21 was developed by Technical Committee ISO/TC 17, Steel, and was circulated to the member bodies in September 1982. It has been approved by the member bodies of the following countries: Australia India Poland Austria Iran South Africa, Rep. of Belgium Ireland Spain Brazil Italy Sweden Bulgaria Kenya Tanzania China Korea, Dem. P. Rep. of Turkey Czechoslovakia Korea, Rep. of United Kingdom Egypt, Arab Rep. of Netheriands USA Germany, F.R. New Zealand Hungary Norway The member body of the following country expressed disapproval of the document on technical grounds: France International Organization for Standardization, 1983 ? Printed in Switzerland Copyright International Organization for Standardization from IHS ISO 657/21-1983 (E) INTERNATIONAL STANDARD Hot-rolled steel sections Part 21: T-sections with equal depth and flange width - Dimensions Scope and field of application 1 This International Standard specifies dimensions of the hot-rolled tee sections with equal depth and fiange width. 2 Dimensions The dimensions of the sections are given in the table Sectional properties 3 The mass, sectionai area and properties of the sections are given for information in the table. Copyright International Organization for Standardization