标准编号：ISO 2553:2019
中文名称：焊接及相关工艺 图纸符号表示 焊接接头
英文名称：Welding and allied processes — Symbolic representation on drawings — Welded joints
发布日期：2019-03
标准范围
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.
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