An EPC steel structure procurement checklist helps buyers control the quotation stage before supplier selection begins. When the RFQ package is incomplete, fabricators fill the gaps with assumptions. Those assumptions can make prices look attractive at first but create changes during drawing review, production, inspection, packing, or shipment.
This checklist is written for industrial buildings, warehouses, workshops, pipe racks, platforms, and similar steel structure packages where fabrication, documentation, export packing, and delivery planning must be aligned before award.
1. Confirm the procurement scope
Start by defining what the steel structure package includes and excludes. A clear scope prevents suppliers from quoting different package boundaries.
| Scope item | Buyer check |
|---|---|
| Primary steel | Columns, beams, rafters, crane beams, trusses, and main frames are clearly included or excluded. |
| Secondary steel | Purlins, girts, bracing, stairs, platforms, ladders, handrails, and small supports are identified. |
| Connection items | Plates, stiffeners, bolts, nuts, washers, and anchor bolts are defined by scope and responsibility. |
| Design or detailing | Clarify whether the supplier is responsible for shop drawings, connection design, or fabrication drawings. |
2. Prepare the drawing package
The drawing package should be complete enough for a fabricator to understand geometry, loads, material grades, connection intent, and interface points. If drawings are preliminary, state that clearly and ask suppliers to separate firm pricing from provisional assumptions.
- General arrangement drawings with grid dimensions, elevations, roof slope, and building height.
- Structural drawings or member schedules showing main steel and secondary steel.
- Typical connection details or connection design responsibility.
- Material grades, design code, loads, and project specification notes.
- Interface drawings for cladding, crane systems, equipment, platforms, or civil works.
For a detailed drawing list, use the steel structure quotation drawings checklist.
3. Define standards before price comparison
Standards affect fabrication cost, inspection time, coating requirements, and documentation. EPC buyers should not wait until after supplier award to define them.
- Material standard and steel grade.
- Welding standard and inspection level.
- Bolt standard and coating requirement.
- Surface preparation grade and paint system.
- Dimensional tolerance and acceptance criteria.
- Third-party inspection requirements, if any.
4. Request comparable quotation information
Ask all shortlisted suppliers to quote against the same package and to state assumptions in the same format. This makes comparison easier and prevents hidden exclusions.
| Quotation item | Required answer |
|---|---|
| Weight basis | Theoretical weight, drawing weight, fabricated weight, or shipment weight. |
| Included scope | Steel members, plates, bolts, detailing, coating, packing, and documents. |
| Excluded scope | Design, installation, freight, taxes, inspection, special documents, or site work. |
| Commercial terms | Currency, validity, payment, Incoterms, production lead time, and delivery basis. |
Use the steel structure fabrication quote comparison guide after quotations are received.
5. Check supplier capability before award
A supplier should be evaluated by more than price. EPC buyers should confirm realistic production capacity, drawing communication, documentation capability, coating control, export experience, and current workload.
- Recent projects with similar tonnage, member size, and documentation level.
- Production capacity evidence based on recent output, not only stated maximum capacity.
- Workshop flow for cutting, drilling, assembly, welding, blasting, painting, and packing.
- Quality records and sample document packages.
- Export packing experience for similar steel components.
For capacity review, see the steel structure production capacity checklist.
6. Define quality documents in the RFQ
Quality documents are part of the project deliverable. If they are not requested before award, the buyer may receive incomplete records or face extra costs at shipment time.
- Material certificates and material receiving records.
- Welding procedure, welder qualification, and welding inspection records.
- Dimension inspection records.
- Surface treatment and coating inspection records.
- Material traceability records where required.
- Packing list, component marking list, and loading photos.
The steel structure quality documents guide gives a more detailed document list.
7. Plan export packing and site sorting
Export packing affects site installation. Poor marking, mixed small parts, coating damage, and unclear bundle lists can delay unloading and erection even when fabrication quality is acceptable.
| Packing control | What to define |
|---|---|
| Component marking | Marks should match drawings, packing lists, and installation areas. |
| Bundle method | Bundle by member type, shipment batch, building zone, or installation sequence. |
| Small parts | Pack bolts, plates, clips, and accessories in marked boxes or bags. |
| Loading records | Request bundle photos, container loading photos, and shipment document index. |
Use the export packing checklist and component marking guide before shipment planning starts.
8. Final checklist before sending the RFQ
- Scope is clear and the same package will be sent to each supplier.
- Drawing package is complete enough for quotation or clearly marked as preliminary.
- Material, welding, coating, inspection, and tolerance standards are listed.
- Required quality documents are included in the RFQ.
- Export packing, component marking, and delivery basis are defined.
- Suppliers are asked to list assumptions, exclusions, and missing information.
- Quotation comparison will use scope completeness, not only unit price.
Before releasing the RFQ, review the overseas steel structure procurement risks that can affect pricing, documentation, production, coating, packing, and delivery.
Buyer note
The goal of this checklist is not to make the RFQ longer. The goal is to make each supplier quote the same work. A clear RFQ gives the buyer better comparison, fewer change requests, and a cleaner handoff from procurement to production.