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BS EN ISO 2553:2019 pdf free

BS EN ISO 2553:2019 pdf free.Welding and allied processes – Symbolic representation on drawings – Welded joints.
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 128 (all parts), Technical drawings — General principles of present ation
ISO 129-L Technical product documentation (TPD) — Presentation of dimensions and tolerances — Part 1:
General principles
LSQIO9fl-2.. Technical product documentation — Lettering — Part 2: Latin alphabet, numerals and marks
ISO 4061 Welding and allied processes — Nomenclature of processes and reference numbers
ISO/TR 25901 (all parts), Welding and related processes — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 25901 (all parts) and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Welding symbol
4.1 General
A reference line and arrow line are required elements. Additional elements may be included to convey specific information.
It is preferable to show the welding symbol on the same side of the joint that the weld is to be made, i.e. the arrow side (see 4.7).
The thickness of the arrow lines, reference line, elementary symbols and lettering shall be in accordance with Iso 128 (all parts) and ISO 3098-2.
In order not to overburden drawings, reference should be made to notes in the drawing or other design- related documents.
4.2 Basic welding symbol
If joint details are not specified and the only requirement is to indicate that a joint is to be welded, the basic symbol shown in Figure 1 may be used. In this case, a dual reference line is not required for system A (see 4JJ. A) as no details concerning the weld are being conveyed.
The basic welding symbol shall comprise an arrow line, reference line and a tail.BS EN ISO 2553 pdf free download.

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