Bevel-Groove Weld Symbol
A bevel-groove weld uses an angled preparation on one member while the mating member remains square. Because the preparation is asymmetric, the arrow and joint detail are essential.
- Recognize an asymmetric bevel-groove preparation
- Identify which member is prepared
- Keep groove angle, bevel angle, root opening, and depth separate
Preparing both members
Preparing the wrong member can make a joint impossible to assemble. Bevel grooves demand more attention to arrow convention and the physical detail than symmetric groove families.
One plate must stay square
A single-bevel callout points to a joint where only one member is accessible for preparation.
Use the arrow convention and joint detail to identify the member receiving the bevel. Read the angle, root opening, and depth from their stated positions.
The correct edge is prepared and the mating member remains square as designed.
Prepare one member—not the one that merely looks easier.
A thick plate meets a thinner square-edged plate. The broken-arrow convention and section detail identify which member receives the bevel.
Use the arrow break and joint detail together when member selection is significant.
Keep the opposite member square unless another instruction changes it.
Do not replace a bevel angle with the complete groove angle.
Highlight the prepared member, copy the bevel requirement onto that member only, and explain what would change if the preparation were mirrored.
Deliverable · A member-specific edge-preparation instructionCompare with the field read +
Only the selected member receives the bevel; the mating member remains square in this detail. Mirroring the preparation changes fit-up and may make the assembly inconsistent with the drawing.
Let the arrow select the prepared member
Begin with the cue in the first column. The final column records the drawing, detail, procedure, or acceptance question that this callout cannot answer by itself.
| Visual cue | What it establishes | What still needs verification |
|---|---|---|
| Single-bevel shape | One prepared face against a square/unprepared mate | Do not convert it into a symmetric V groove. |
| Arrow/broken-arrow convention | Helps assign the prepared member where the convention applies | Confirm against the detail and governing standard. |
| Angle and root-opening values | Define preparation geometry and fit-up | Neither value is weld length. |
Bevel versus V: one prepared member or two
Bevel groove
One angled preparation
Evidence to useWhich member is actually prepared?V groove
Two faces form a V
Evidence to useDo both members show preparation?J groove
One prepared face is curved rather than straight
Evidence to useLook for the J-shaped elementary symbol and radius detail.Write an edge-prep instruction that cannot be mirrored
Recognize the vertical-and-sloped bevel symbol, establish the side, then use the arrow break or detailed view to identify which member receives the edge preparation.
- Identify the bevel-groove symbol rather than a V groove.
- Locate the exact member at the arrow tip.
- Use an arrow break or joint detail to identify the prepared member.
- Read groove angle, root opening, depth, and weld size separately.
How a correct angle lands on the wrong plate
Preparing both members
Preparing both edges creates a V-type joint rather than the specified single bevel.
Reversing the member
An asymmetric groove on the wrong member changes fit-up and may make the joint impossible to assemble.
Confusing angle types
Read whether the value is the bevel angle or complete groove angle in the governing convention.
Is the bevel tied to an unmistakable member?
Use the full list before fabrication, fit-up, or inspection. This is a drawing-reading handoff—not a substitute for the governing acceptance standard.
- 01Locate the joint
- 02Identify the prepared member
- 03Read angle and root opening
- 04Check depth and land/root face
- 05Confirm access and WPS
Evidence and limits for this Bevel Groove lesson
This guide teaches common AWS-style drawing interpretation. It is educational material, not a substitute for the purchased standard, project specification, code, WPS, or qualified engineering direction.
How this page was made. The training diagrams, worked example, comparisons, and questions are original educational material. Read the editorial and technical review policy for the full process.
Save your place after Bevel Groove.
This marker records reading progress only; it does not mean the topic is mastered. Use the six-question practice page to check your understanding.
Build outward from Bevel Groove
Groove Welds Overview
V Groove
J Groove
Arrow Side vs Other SideEducational practice only. Verify production work against the governing drawing, applicable standard, WPS, and qualified instruction.