IS 18646 : 2024/ISO 6947 : 2019 Welding and Allied Processes - Welding Positions
NATIONAL FOREWORD
This Indian Standard which is identical to ISO 6947 : 2019 'Welding and allied processes - Welding positions' 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.
Welding positions are an important factor which is to be taken into consideration during the welding process for production as well as testing and this standard lays down different welding positions depending on orientation of weld pieces. Welding positions are not dependent on the geometrical arrangement of the joint, for example, butt or fillet joint, or that of the semi-finished product. Welds of all types and in all directions are covered. The direction of welding (that is, upwards or downwards) can also contribute to defining welding positions.
The main positions have been given symbols which can easily be used for designation purposes; these symbols were not derived from any particular language. The concept of a special test position, not covered by the existing and well-defined positions, has been included so that testing can be carried out in positions that do not meet the standard requirements.
The relationship between testing positions and production welding positions is specified elsewhere, for example, in the ISO 9606 series or ISO 15614 series.
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 with those used in Indian Standard. Attention is especially drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, it should be read as 'Indian Standard'; and
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.