Welding Symbols - PowerPoint PPT Presentation

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Welding Symbols

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  1. Welding Symbols Understanding Welding Symbols Terms and Definitions

  2. Created By Jeffrey Rodenbarger Drake-Williams Steel Omaha, Nebraska

  3. Reference Line Reference Line (Required element) Always Horizontal

  4. Arrow Line Reference Line (Required element) Arrow

  5. Tail Reference Line (Required element) Arrow Tail

  6. Reference Line must always be horizontal, Arrow points to the line or lines on drawing which clearly identify the proposed joint or weld area. Reference Line (Required element) Arrow Tail The tail of the welding symbol is used to indicate the welding or cutting processes, as well as the welding specification, procedures, or the supplementary information to be used in making the weld.

  7. Reference Line must always be horizontal, Arrow points to the line or lines on drawing which clearly identify the proposed joint or weld area. Basic components of aWELDING SYMBOL Arrow connects reference line to arrow side member of joint or arrow side of joint Reference Line (Required element) Arrow Tail omitted when reference not used Tail The tail of the welding symbol is used to indicate the welding or cutting processes, as well as the welding specification, procedures, or the supplementary information to be used in making the weld.

  8. All the way Around A circle at the tangent of the arrow and the reference line means welding to be all around.

  9. Field Weld Symbol A flag at the tangent of the reference line and arrow means Field Weld.

  10. Weld Symbol Terminology OTHER SIDE ARROW SIDE

  11. Break in arrow means arrow side must be side that beveling or other preparation required.

  12. Fillet Weld (Arrow Side Only)

  13. Fillet Weld (Other Side)

  14. Size of Fillet Weld Noted 1/4 1/4

  15. Example of Double Bevel Groove weld Depth of preparation or groove 1/4 (5/16) 1/4 (5/16) Depth of penetration

  16. Plug or Slot Weld Symbol Arrow Side

  17. What does this symbol Represent? 5/16 5/16

  18. Single-Bevel-Groove and Double Fillet Weld Symbol 5/16 5/16

  19. Single-Bevel-Groove and Double Fillet weld Symbols

  20. Chain Intermittent Fillet Weld Weld both sides each end and 10 inches center to center in between 1/4 2-10 10 in 1/4 2-10

  21. Staggered Intermittent Fillet Weld 1/4 2-10 Weld ends than 10 inch centers staggered each side 1/4 2-10 10 in 10 in

  22. Finish Symbol Groove Angle included angle of countersink for plug welds Groove weld size F A R Root opening; Depth of filling for plug and slot welds. Depth of bevel S(E) L-P Length of weld Pitch(Center-to-center spacing) of welds OTHER SIDE ARROW SIDE FIELD WELD (N) Number of spot, seam, stud, plug, slot, or projection welds

  23. The End