1、ICS 25.100.70Schleifmittel auf Unterlagen Runde Schleifbltter(ISO 21950 : 2001)This standard incorporates International StandardISO 21950 Coated abrasives Plain discs.A comma is used as the decimal marker.National forewordThis standard has been prepared by ISO/TC 29 Small tools, SC 5 Grinding wheels
2、 and abrasives.The responsible German body involved in its preparation was the Normenausschuss Werkzeuge undSpannzeuge (Tools and Clamping Devices Standards Committee), Technical Committee Schleifmittel aufUnterlagen.DIN 50014 is the standard corresponding to International Standard ISO 554 referred
3、to in clause 2 of theISO Standard.AmendmentsDIN 69178, August 1981 edition, has been superseded by the specifications of DIN ISO 21950.Previous editionsDIN 69178: 1975-02, 1981-08.National Annex NAStandard referred to(and not included in Normative reference and Bibliography)DIN 50014 Artificial clim
4、ates in technical applications Standard atmospheresRef. No. DIN ISO 21950 : 2001-11English price group 06 Sales No. 040603.02DEUTSCHE NORM November 2001ISO 21950Continued overleaf.ISO Standard comprises 4 pages. No part of this standard may be reproduced without the prior permission ofDIN Deutsches
5、Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Coated abrasivesPlain discs(ISO 21950 : 2001)Supersedes DIN 69178,August 1981 edition.Page 1ISO 21950 : 2001Coated abrasivesPlain discsPage 2ISO 21950 : 2001Page 3ISO 21950 : 2001Page 4ISO 21950 : 2001
