Steel structure inspection documents before shipment should confirm that the fabricated components match the purchase order, approved drawings, inspection plan, and packing requirements. For EPC buyers, this review is the last practical checkpoint before export delivery, so the document package must be clear enough for engineering, quality, logistics, and site teams to use later.
The goal is not to collect paperwork for its own sake. The goal is to make sure each component can be traced, inspected, packed, shipped, and installed without avoidable disputes.
1. Start with the approved document list
Before reviewing inspection records, compare the supplier's submission against the document list agreed in the RFQ or purchase order. If the document list was not defined early, ask the supplier to provide an index that separates material, fabrication, coating, packing, and release records.
| Document group | What the buyer should confirm |
|---|---|
| Material records | Mill certificates, heat numbers, material grades, and traceability to component marks. |
| Fabrication inspection | Dimensional checks, hole checks, assembly checks, and non-conformance status. |
| Welding records | WPS, welder qualification, visual inspection, NDT if required, and repair closeout. |
| Coating records | Surface preparation, paint batch, dry film thickness, curing, and repair records. |
| Packing and delivery | Packing list, component marking list, bundle photos, container loading photos, and shipment release note. |
2. Confirm component traceability
Every major record should connect back to the same component numbers used in drawings, packing lists, and shipping marks. A certificate or inspection report is weak if the buyer cannot identify which beam, column, truss, or bracket it covers.
- Check that component marks match the latest approved drawings.
- Confirm that heat numbers or material batch numbers are traceable where required.
- Compare inspection report quantities with the packing list quantities.
- Ask the supplier to explain any revised, cancelled, or remade components.
For a deeper traceability review, use the steel structure quality documents checklist.
3. Review fabrication inspection evidence
Fabrication inspection documents should show that important geometry and workmanship checks were completed before coating and packing. EPC teams should not rely only on final photos, because photos rarely show dimensions, hole spacing, camber, straightness, or repair history.
- Dimensional inspection reports for critical members.
- Hole size, hole spacing, and connection plate checks.
- Assembly or trial-fit records if required by the project.
- Non-conformance reports and evidence of corrective action.
- Final release status by component batch or shipment lot.
4. Check welding and NDT closeout
Welding records must be closed before shipment, especially when welded areas are already coated or packed. Buyers should confirm that welding repairs and re-inspection results are included, not only the original inspection sheet.
| Welding item | Pre-shipment check |
|---|---|
| WPS and welder records | Procedure and welder qualifications match the project welding scope. |
| Visual inspection | Reports include weld location, result, inspector, date, and repair status. |
| NDT reports | Method, percentage, acceptance standard, tested welds, and results are clear. |
| Repair records | Rejected welds are repaired, re-inspected, and closed before coating or shipment. |
Use the welding quality requirements guide when defining welding evidence before award.
5. Review coating and surface treatment records
Surface treatment records matter because coating defects may become hidden after bundling, container loading, or long ocean transport. Before shipment, review blasting grade, environmental conditions, paint system, dry film thickness, galvanized coating evidence where applicable, and touch-up records.
- Surface preparation or blasting inspection report.
- Paint brand, product name, batch number, and mixing record if required.
- Dry film thickness readings by member or batch.
- Coating repair and touch-up records.
- Photos showing coated components before packing.
The surface treatment requirements guide explains which coating items should be defined in the RFQ.
6. Match packing documents with physical shipment
A good inspection file must connect quality release to packing and logistics. If the packing list, component marking list, and photos do not match each other, the site team may face missing parts, mixed bundles, or unclear installation sequences.
| Packing document | Why it matters |
|---|---|
| Component marking list | Confirms each part can be identified on site. |
| Packing list | Connects bundle numbers, quantities, weights, and dimensions. |
| Bundle photos | Shows protection, labels, small parts packing, and loading condition. |
| Container loading photos | Supports claims review if damage or shortage is reported after arrival. |
For delivery planning, compare this package with the export packing checklist for steel structure components.
7. Red flags before shipment release
- Inspection reports use general batch names instead of component marks.
- Drawing revision numbers are missing or different across reports.
- NDT or coating records are promised after shipment.
- Packing photos do not show visible marks, bundle numbers, or protection details.
- Non-conformance reports exist, but repair closeout evidence is missing.
Buyer note
Pre-shipment document review works best when requirements are already written into the RFQ and purchase order. Use the EPC steel structure procurement checklist to define inspection documents before suppliers quote, then use this page as the final release review before shipment.