Weld Log Fields Explained
If a weld log does not define its core fields clearly, every downstream export becomes harder to trust. The strongest weld-log formats use one standard definition for every column so the shop, QA, and turnover teams are not translating free text later.
In practice, the most important fields are the ones that connect identity, procedure, material traceability, and inspection status in one row.
What each field should mean
Weld number
The unique ID for the joint. This is the anchor for every later inspection and turnover record.
Drawing and revision
The exact source document so the team can prove which isometric the joint came from.
Spool or line reference
The fabrication grouping used by the shop and by field installation teams.
Size, schedule, and material
The pipe data that connects the joint to the procedure, material traceability, and scope.
Welder ID
The person or crew who performed the weld. This is critical for audits and qualification checks.
WPS number
The approved welding procedure used for the joint.
Heat numbers
Material traceability for pipe, fittings, and any second material item tied to the joint.
NDT status
The inspection method and current outcome so QA can see whether the weld is accepted, pending, or rejected.
Remarks
Exception notes, hold points, repair references, or any close-out instruction needed later.
Where teams usually go wrong
- Using one column for multiple meanings, such as mixing spool and line references.
- Leaving heat numbers in remarks instead of dedicated traceability fields.
- Tracking NDT in a separate spreadsheet that no longer matches the weld row.
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