NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 9539 : 2010 ‘Gas welding equipment — Materials for equipment used in gas welding, cutting and allied processes’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Welding General and its Applications Sectional Committee and approval of the Metallurgical Engineering Division Council.

This standard was first published in 2012 identical with ISO 9539 : 1988. The first revision of this standard has been undertaken to align it with the latest version of ISO 9539 : 2010.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.