ISO/TC 44/SC 7 - Representation and terms

This document defines welding positions for testing and production, for butt and fillet welds, in all product forms. Annex A gives examples of the limits of the slope of a weld axis and the rotation of the weld face about the weld axis for welding positions in production welds. Annex B gives a comparison of this document and US designation systems for welding positions.

This document defines the rules to be applied for symbolic representation of welded joints on technical drawings. This can include information about the geometry, manufacture, quality and testing of the welds. The principles of this document can also be applied to soldered and brazed joints. It is recognized that there are two different approaches in the global market to designate the arrow side and other side on drawings. In this document: — clauses, tables and figures which carry the suffix letter "A" are applicable only to the symbolic representation system based on a dual reference line; — clauses, tables and figures which carry the suffix letter "B" are applicable only to the symbolic representation system based on a single reference line; — clauses, tables and figures which do not have the suffix letter "A" or "B" are applicable to both systems. The symbols shown in this document can be combined with other symbols used on technical drawings, for example to show surface finish requirements. An alternative designation method is presented which can be used to represent welded joints on drawings by specifying essential design information such as weld dimensions, quality level, etc. The joint preparation and welding process(es) are then determined by the production unit in order to meet the specified requirements. NOTE Examples given in this document, including dimensions, are illustrative only and are intended to demonstrate the proper application of principles.

ISO 9692-3:2016 specifies recommended types of joint preparation for metal inert gas welding, MIG (131), and tungsten inert gas welding, TIG (141), and autogenous TIG welding (142) on aluminium and its alloys. It applies to fully penetrated welds.

ISO/TR 25901-4:2016 contains terms and definitions applicable to arc welding. It does not contain terms and definitions related to specific processes or particular aspects of welding and allied processes that are covered in other parts of this Technical Report (see Foreword) or in other ISO standards. In the main body of this part of ISO/TR 25901, terms are arranged in a systematic order. Annex A provides an index in which all terms are listed alphabetically with reference to the appropriate subclause. In addition, it provides French translations, covering two of the three official ISO languages (English, French and Russian). German translations are also provided; these are published under the responsibility of the member body for Germany (DIN), and are given for information only. NOTE 1 Only the terms given in the official languages (English, French and Russian) are to be considered as ISO terms and definitions. NOTE 2 All these terms and definitions are also available on the ISO Online Browsing Platform (OBP): https://www.iso.org/obp/ui/

ISO/TR 25901-1:2016 contains general terms and definitions applicable to welding and allied processes. It does not contain terms and definitions related to specific processes or particular aspects of welding and allied processes that are covered in other parts of this Technical Report (see Foreword) or in other ISO standards. In the main body of this part of ISO/TR 25901, terms are arranged in a systematic order. Annex A provides an index in which all terms are listed alphabetically with reference to the appropriate subclause. In addition, it provides French translations, covering two of the three official ISO languages (English, French and Russian). German translations are also provided; these are published under the responsibility of the member body for Germany (DIN), and are given for information only. NOTE 1 Only the terms given in the official languages (English, French and Russian) are to be considered as ISO terms and definitions. NOTE 2 All these terms and definitions are also available on the ISO Online Browsing Platform (OBP): https://www.iso.org/obp/ui/

ISO/TR 25901-3:2016 contains terms and definitions for welding processes, classified in accordance with their physical characteristics and to the relevant energy carrier. It does not contain terms and definitions related to specific processes or particular aspects of welding and allied processes that are covered in other parts of this Technical Report (see Foreword) or in other ISO standards. In the main body of this part of ISO/TR 25901, terms are arranged in a systematic order. Annex A provides an index in which all terms are listed alphabetically with reference to the appropriate subclause. In addition, it provides French translations, covering two of the three official ISO languages (English, French and Russian). German translations are also provided; these are published under the responsibility of the member body for Germany (DIN) and are given for information only. NOTE 1 Only the terms given in the official languages (English, French and Russian) are to be considered as ISO terms and definitions. NOTE 2 All these terms and definitions are also available on the ISO Online Browsing Platform (OBP): https://www.iso.org/obp/ui/

ISO 9692-1:2013 specifies types of joint preparation for metal arc welding with covered electrode, gas-shielded metal arc welding, gas welding, TIG welding, and beam welding of steel. It applies to joint preparation for full penetration butt welds and for fillet welds. For partial penetration butt welds, types of joint preparation and dimensions differing from those specified in ISO 9692-1:2013 may be stipulated. The root gaps referred to in ISO 9692-1:2013 are those gaps presented after tack welding, if used. Consideration is given to altering the joint preparation details (where appropriate) to facilitate temporary backing, "one-sided welding," etc.

ISO 857-2:2005 defines, in English, terms used for metal soldering and brazing processes, as well as related terms. The French and German equivalents of the terms used for the more important processes are given in an alphabetical index.

ISO/TR 581:2005 gives general principles related to the weldability of metallic materials. These principles apply to all welding processes and all different types of construction whatever properties they may have.

ISO 9692-4:2003 gives recommendations for types of joint preparation for clad steels.

This part of IS0 9692 applies to types of joint preparation for submerged arc welding with one wire electrode (process 121 according to IS0 4063) on steel. This part of IS0 9692 covers only the welding positions PA and PB according to IS0 6947. In case PC is used, special preparation will be necessary. It applies to fully penetrated welds. For partly penetrated welds, types of joint preparation, shapes and dimensions may differ from the listed proposals if they are specified in the relevant application standard or agreed by parties concerned. If the root is welded by a different arc welding process (see IS0 40631, the joint preparation according to IS0 9692 should be taken into account.

ISO 2553:2013 defines the rules to be applied for symbolic representation of welded joints on technical drawings. This may include information about the geometry, manufacture, quality and testing of the welds. The principles of this standard may also be applied to soldered and brazed joints. It is recognized that there are two different approaches in the global market to designate the arrow side and other side on drawings. In ISO 2553:2013: sections, tables and figures which carry the suffix letter "A" are applicable only to the symbolic representation system based on a dual reference line; sections, tables and figures which carry the suffix letter "B" are applicable only to the symbolic representation system based on a single reference line; sections, tables and figures which do not have the suffix letter "A" or "B" are applicable to both systems. The symbols shown may be combined with other symbols used on technical drawings, for example to show surface finish requirements. An alternative designation method is presented which may be used to represent welded joints on drawings by specifying essential design information such as weld dimensions, quality level, etc. The joint preparation and welding process(es) are then determined by the production unit in order to meet the specified requirements.

ISO 6947:2011 defines welding positions for testing and production, for butt and fillet welds, in all product forms. One annex gives examples of the limits of the slope of a weld axis and the rotation of the weld face about the weld axis for welding positions. Another annex provides a comparison of International, European and US designations.

ISO 9692-1:2004 specifies types of joint preparation for metal-arc welding with covered electrode, gas-shielded metal-arc welding, gas welding, TIG welding and beam welding of steel. It applies to joint preparation for full penetration butt welds and for fillet welds.

ISO 2553:1992 prescribes the rules to be applied for the symbolic representation of welded, brazed and soldered joints on drawings.

Defines fundamental welding positions and makes possible the location in space of straight welds by means of slope and rotation. Cancels and replaces the recommendations ISO/R 598-1967 and ISO/R 627-1967.