1651 NTERNATIONAL STANDARD (so INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEXKIYHAPOAHA OPAHW3ALIM TIO CTAHIAPTW3ALIWW·ORGANISATION INTERNATIONALE DE NORMALISATION Tube drawing mandrels Mandrins d'étirage de tubes First edition - 1974-12-15 UDC 621.774.37.073 Ref.No.ISO 1651-1974 (E) 1SO 1651-1974 ( Descriptors : tools, mandreis, tube drawing, dimensions. Price based on 3 pages FOREWORD ISO (the International Organization for Standardization) is a worldwide federation of national standards institutes (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 Technicat Committee has been set up has the right to 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 Technicat Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the Iso Council. Prior to 1972, the results of the work of the Technicat Committees were published as ISO Recommendations; these documents are now in the process of being transformed into International Standards. As part of this process, Technical technically suitable for transformation. International Standard ISO 1651 therefore replaces ISO Recommendation R 1651-1970 to which it is technically identical. ISO Recommendation R 1651 was approved by the Member Bodies of the folfowing countries : Belgium India South Africa, Rep. of Czechoslovakia Ireland Spain Egypt, Arab Rep. of Israe! Switzerlandi Finland Italy Thailand France Netherlands Turkey Greece Poland United Kingdom Hungary Portugal Yugoslavia The Member Body of the following g country expressed disapproval of the Recommendation on technical grounds : Sweden The Member Body of the following country disapproved the transformation of ISO/R 1651 into an International Standard : Germany @ International Organization for Standardization, 1974 : Printed in Switzerland ISO 1651-1974 (E) INTERNATIONAL STANDARD Tube drawing mandrels 1 SCOPEANDFIELDOFAPPLICATION This International Standard specifies the general dimensions of tube drawing mandrels with respect to their diameter d. It applies to brazed drawing mandrels and sleeved drawing mandrels. The dimensions have been determined taking existing practice into account as far as possible. Threads are given in both measurement systems (metric and in inches) so as to allow the use of these mandrels on any machine.