ISO/TC 44/SC 7 - Representation and terms

This document applies to types of joint preparation for submerged arc welding with one wire electrode (process 121 according to ISO 4063) on steel. This document covers only the welding positions PA and PB according to ISO 6947. If PC is used, special preparation is necessary. This document applies to fully penetrated welds. For partly penetrated welds, types of joint preparation, shapes and dimensions can differ from the listed proposals if they are specified in the relevant application standard or agreed by the parties concerned.

This document establishes a nomenclature for: — welding; — brazing, soldering and weld brazing; — thermal cutting; with each process identified by a reference number. It covers the main processes (one digit), groups (two digits) and sub-groups (three digits). The reference number for any process has a maximum of three digits. This system is intended as an aid in computerization and the drafting of, for example, drawings, working papers and welding procedure specifications, and enables the uniform international designation of the processes. This document does not cover all process variants. The process numbers can be supplemented with additional information for variants not listed.

This document contains terms and definitions applicable to health and safety in welding and allied processes. It is intended to be referenced in other documents dealing with this subject. In the main body of this document, terms are arranged in systematic order. Indexes are included at the end of this document in which all terms are listed alphabetically in English, French and German, respectively, with reference to the appropriate term numbers and translations of the terms in the other two languages. NOTE: In addition to text written in the official ISO languages (English and French), this document gives text in German. This text is published under the responsibility of the member body for Germany (DIN) and is given for information only. Only the text given in the official languages can be considered as ISO text.

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 25901-3:2016 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/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 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 6520-2:2013 collects and classifies the possible imperfections in welds made with pressure. A uniform designation is specified. Only the type, shape, and dimensions of the different imperfections caused by welding with pressure are included. Metallurgical deviations are not taken into account. Imperfections produced other than by the welding operation, e.g. additional stresses, loads or environmental factors, are not covered by ISO 6520-2:2013. Information concerning the consequences of the imperfections mentioned and the use of particular structures is not given, because this depends on the specific requirements of the joint.

ISO 6520-1:2007 serves as the basis for a precise classification and description of weld imperfections. In order to avoid any confusion, the types of imperfection are defined with explanations and illustrations where necessary. Metallurgical imperfections are not included. Another system for the designation of imperfections is possible according to ISO/TS 17845. A correspondence is given between the existing classification of imperfections according to ISO 6520-1:2007 and the designation system according to ISO/TS 17845:2004.

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 international Standard defines terms of the possible imperfections in oxyfuel gas, laser beam and plasma cuts in metallic materials which are collected and grouped. Imperfections are irregularities or deviations from the specified shape and location of cut. This international Standard only includes imperfections originating directly from oxyfuel gas, laser beam and plasma arc cutting; any adverse effects resulting from additional external stresses or strains are not considered. The type, shape and location of these imperfections are grouped together but conditions and causes of origin are not given. Information concerning the evaluation and consequences of the above mentioned imperfections is not given because this depends on the specific job requirements. The terms have been selected to characterize the principal imperfections mentioned, however, two or more may be found simultaneously. The grouping system used is not an evaluation of quality.

This International Standard describes by pictorial representation most of the more common terms, in English, French and German, for types of joints, joint preparation and welds. This International Standard can be used on its own or in conjunction with other similar standards. NOTE 1 The figures in this International Standard are only sketches that have been drawn to illustrate the typical characteristic features of different types of joint. The figures are not necessarily as they should be portrayed on design or technical drawings (e.g. in accordance with ISO 2553). NOTE 2 In addition to terms given in two of the three official ISO languages (English and French), this International Standard gives the equivalent terms in the German language; these are published under the responsibility of the member body for Germany (DIN). However, only the terms and definitions given in the official languages can be considered as ISO terms and definitions.

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 4063:2009 establishes a nomenclature for welding and allied processes, with each process identified by a reference number. ISO 4063:2009 covers the main groups of processes (one digit), groups (two digits) and sub-groups (three digits). The reference number for any process has a maximum of three digits. This system is intended as an aid in computerization, drawings, the drafting of working papers, welding procedure specifications, etc.

ISO/TR 25901:2007 defines terms specifically related to welding and allied processes, together with their definitions.

ISO/TS 17845:2004 gives a system for the designation of imperfections in welding and allied processes. It applies to metallic and non-metallic materials (e.g. thermoplastics). It can also be applied for other purposes (e.g. founding).

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.

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 2553:1992 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.

Gives a general definition of weldability, taking into consideration all the welding processes and taking note of all the different types of construction whatever properties they may have. As it includes all possibilities resulting from the combination of the four variables: material, process, type of construction and purpose, it should be possible to deduce any particular definition.