657/21 (iso International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATION+MEKAYHAPOAHAR OPTAHW3ALMR NO CTAHAAPTW3AUMMW+ORGANISATION INTERNATIONALE DE NORMALISATION Hot-rolled steel sections Part 21: T-sections with equal depth and flange width - Dimensions Profiles enacierlamines achaud--Partie21:Profiles enTaailesdememeprofondeuretdememelargeurdeface Dimensions Firstedition1983-10-15 ISO 657/21-1983 (E) UDC669.14-423.4 Ref.No. 1SO 657/21-1983 (E) Descriptors : iron and steel products, hot rolled products, metalsections,dimensions,sectionalproperties Price based on 2 pages Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies).The work of developing International Standards is carried out through ISo technical committees. Every member body interested in a subject for which a technical committee has been authorized has the rightto be represented on that committee.International organizations,governmental 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 Netherlands USA Germany, F.R. New Zealand Hungary Norway Themember bodyof thefollowing country expresseddisapproval of the document on technical grounds: France International Organization forStandardization,1983 Printed in Switzerland INTERNATIONALSTANDARD ISO657/21-1983(E) Hot-rolledsteelsections 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 flange width. 2Dimensions The dimensions of the sections are given in the table. Sectionalproperties The mass, sectional area and properties of the sections are given for information in the table.