How to Create a Weld Log for ASME B31.3
A compliant weld log for ASME B31.3 should provide complete weld traceability from fit-up to inspection acceptance. At a minimum, each record should link weld number, joint details, welder identification, procedure qualification, material heat numbers, and NDT outcomes.
Start by standardizing your sheet structure across all projects. Assign one unique weld ID per joint and keep drawing references consistent with your latest revision status. This avoids duplicate IDs and missing weld history during fabrication turnover.
If your current process is manual, use a standardized template first, then migrate to an automated workflow that extracts weld data directly from marked-up drawings to reduce transcription errors.
Recommended ASME B31.3 Weld Log Fields
- Drawing number and revision
- Weld number and spool reference
- Joint type, size, and material
- Welder ID and WPS/WPS reference
- Heat number(s) and lot traceability
- NDT method, date, and result status
- Remarks, hold points, and release status
Need a faster workflow?
Download a free weld log template or upload your drawing to auto-generate the log.
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