Welding Symbols Understanding Welding Symbols Terms and Definitions

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Welding Symbols Understanding Welding Symbols Terms and Definitions

Welding Symbols Understanding Welding Symbols Terms and Definitions

Created By Jeffrey Rodenbarger Drake-Williams Steel Omaha, Nebraska

Created By Jeffrey Rodenbarger Drake-Williams Steel Omaha, Nebraska

• Reference Line (Required element) Always Horizontal

• Reference Line (Required element) Always Horizontal

Arrow Line Reference Line (Required element) Arrow

Arrow Line Reference Line (Required element) Arrow

Tail Reference Line (Required element) Arrow Tail

Tail Reference Line (Required element) Arrow Tail

Reference Line must always be horizontal, Arrow points to the line or lines on

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.

Reference Line must always be horizontal, Arrow points to the line or lines on

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 a WELDING SYMBOL Reference Line (Required element) Arrow connects reference line to arrow side member of joint or arrow side of joint 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.

All the way Around A circle at the tangent of the arrow and the

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

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

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

Weld Symbol Terminology OTHER SIDE ARROW SIDE

Weld Symbol Terminology OTHER SIDE ARROW SIDE

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

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

Fillet Weld (Arrow Side Only)

Fillet Weld (Arrow Side Only)

Fillet Weld (Other Side)

Fillet Weld (Other Side)

Size of Fillet Weld Noted 1/4

Size of Fillet Weld Noted 1/4

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

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

Plug or Slot Weld Symbol Arrow Side

Plug or Slot Weld Symbol Arrow Side

What does this symbol Represent? 5/16

What does this symbol Represent? 5/16

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

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

Single-Bevel-Groove and Double Fillet weld Symbols

Single-Bevel-Groove and Double Fillet weld Symbols

Chain Intermittent Fillet Weld both sides each end and 10 inches center to center

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

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

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

Finish Symbol Groove weld size F A Depth of bevel R Groove Angle included

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

The End

The End

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