Basic Weld Types
This weld joins 2 pieces at roughly a 90 degree angle.
What is a Fillet Weld?
If the weld symbol is below the reference line, the weld is placed on this side.
What is the Arrow Side?
The number to the left of a fillet weld symbol indicates this.
What is the Weld Size?
This contour symbol indicates the weld face is flat.
What is Flush or Flat Contour?
This type of weld symbol looks like a "V" and is used for thicker materials.
What is a V-Grooved Weld?
This weld is place in a Square groove between 2 plates.
What is a Square Groove Weld?
If this weld symbol is above the reference line, the weld is placed on this.
What is the Other side?
The number to the right of the weld symbol indicates this.
What is the Weld Length?
This contour symbol indicates the weld face is convex.
What is Convex Contour?
This weld symbol looks like a "J" shape.
What is a J-Groove weld?
This weld uses beveled edges before joining.
What is a Bevel Groove Weld?
This line connects the weld symbol to the joint location.
What is the Arrow Line?
This number in parentheses shows the spacing between intermittent welds.
What is the Pitch?
This contour symbol indicates the weld face is concave.
What is Concave Contour?
This weld is used for resistance welding and is shown as a small circle.
What is a Spot Weld?
This weld fills a round hole in on plate to join it to another.
What is a Plug Weld?
This line is the main horizontal line where weld symbols are placed.
What is the Reference Line?
This symbol indicates welds on both sides of the joint.
What is the Both Sides Symbol?
This finishing letter means the weld must be ground.
What is "G" (Grinding)?
This weld standard governs welding symbols in the U.S.
What is AWS (American Welding Society)?
This weld joins 2 overlapping plates using a slotted hole.
What is a Slot Weld?
This symbol at the elbow of the arrow indicates a field weld.
What is the Field Weld Symbol (Flag)?
This term describes a weld that goes all the way around a joint.
What is Weld All Around?
This finishing letter means the weld must be machined.
What "M" (Machined)?
This is the most common blueprint welding symbol used in ag shop fabrication.
What is Fillet Weld?