Welding Diagram Maker

A welding diagram uses standardized reference-line symbols (AWS A2.4 or ISO 2553) to communicate weld type, size, and process to fabricators and inspectors. Use it on engineering drawings whenever you need to specify joint details without ambiguity.

The tool covers fillet, V-groove, bevel, U-groove, J-groove, flare-V, flare-bevel, plug, slot, spot, seam, backing, and surfacing welds — matching the full AWS A2.4 weld-type set. Specify intermittent welds with length and pitch, and add contour or finish symbols as needed.

Yes. Describe the joint you want to change — leg size, groove angle, root opening, finish symbol, or process note — and the AI updates the callout and re-renders the diagram in seconds.

Yes. Export as PNG from the editor toolbar, or copy the diagram to paste into technical reports, fabrication packages, or presentations.

With a free account, you can create diagrams for free. No credit card is needed. You can save your work and generate welding diagrams.