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Abbreviations, Terminology and Welding Symbols
Figure 1.10 Weld dimensioning examples (BSEN 22553)
Supplementary information
Supplementary information specifying NDT, welding pro-
cesses or special instructions can differ between standards
and may be shown at the end of the reference line or adjacent
to it (see Fig. 1.11). BSEN 22553 refers to this as
complementary information. A site or field weld is indicated
by a flag positioned at the joint between the arrow and
reference lines. A circle at the same position is used to
indicate that a peripheral weld is required all around a part.
Other common rules
When a symbol has a perpendicular line (single bevel, single
J, fillet weld, etc.) it will always have the line positioned to the
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Data Standards Ltd, Frome, Somerset – 17/9/200901QG Welding chap1.3d Page 13 of 16