Read the source
Keep drawing version, title block, location, and packet context attached before a row is treated as usable.
A plain guide to drawing-to-BOM extraction, row structure, validation, and handoff for piping teams.
A drawing is the starting point. A qualified reviewer must decide whether the row is complete, which source supports it, and whether it is ready for handoff.
Keep drawing version, title block, location, and packet context attached before a row is treated as usable.
Make missing parts, conflicting specifications, quantities, and reviewer ownership visible before export.
Shape the output for procurement or fabrication while preserving the source and the decision behind every correction.
This page is for estimators and fabrication teams extracting BOM data working on AI BOM Generator. Use it as a practical part of BOM extraction from piping drawings with row-level review.
For ai bom generator, check drawing reference and item description.
For ai bom generator, check specification and size.
For ai bom generator, check quantity and source location.
Published by the Piping Tools Limited research and editorial team. Published 2026-07-25; reviewed 2026-07-28. External practitioner review is credited only when consent and scope are recorded. Coverage is limited to AI BOM extraction from piping drawings.
This worked example shows the review format. It is synthetic test data, not a customer result or a claim about product accuracy.
| Field | Expected source | Illustrative extraction | Reviewer action |
|---|---|---|---|
| Drawing reference | ISO-EXAMPLE-01 | ISO-EXAMPLE-01 | Accepted |
| Item description | 90° LR elbow | 90 degree elbow | Normalize wording |
| Specification | ASTM A234 WPB | A234 WPB | Verify against source |
| Size | DN100 | DN100 | Accepted |
| Quantity | 4 | 3 | Correct to 4 |
| Source location | BOM row 12 | Not captured | Add source location |
Method: define the expected row from a controlled source, compare field by field, record every correction, and report row acceptance separately from field acceptance.