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Thursday, January 24, 2013

Position Welding & Welding Symbol

           position welding
welding position is the position of the object to be welded
(Down hand, horizontal, vertical, overhead),
and welding operator condition (still or moving)

term position in the world of welding on symbolized
as follows:
F = 2 material connection without bevel (champer)
G = 2 material connection with the bevel (champer)

POSITION WELDING GROUPED:
1. HAND DOWN (WITHOUT Bevel / 1F, WITH Bevel / 1G)
2. HORIZONTAL (WITHOUT Bevel / 2F, WITH Bevel / 2G)
3. VERTICAL (WITHOUT Bevel / 3F, WITH Bevel / 3G)
4. OVER HEAD (NO Bevel / 4F, WITH Bevel / 4G)
5. ALL POSITION (WELDING PIPE)


                         SYMBOL WELDING
  • The reference line: the reference line must touch the arrow line and is generally parallel with the bottom of the drawing page
  • The arrow line: the arrow line must touch the joint reference area on the drawing
  • The symbol: the vertical line in the symbols for a fillet weld, single / double bevel butts and a J-butt welds must always be on the left side.
  • The dimensions: In most standards the cross sectional dimensions are given to the left side, and all linear dimensions are give on the right side
  • Supplementary information: such as welding process, weld profile, NDT and any special instructions
so my article is about the position of welding and welding symbols in the drawings, which may be any welding operator should be able to know the working drawings that will be created later in order not to deviate, with working drawings.
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