MANUFACTURING / JAPAN SOURCING
Steel plate RFQs: specify delivery condition and inspection beside the grade
A grade name and a price per tonne do not identify the whole plate order. Define dimensions, supplied condition, downstream work and the inspection/document scope before comparing offers.
Describe the plate you will receive
A fabricator needs plate for a welded machine frame. One quote offers full plates; another offers cut blanks from stock. Both mention the requested grade, but their price bases, tolerances, identification and included processing may differ. Start by naming the supplied item, not only the grade.
JFE Steel’s plate order guide asks buyers to identify dimensional, processing and inspection requirements as well as the material designation.[1] For this frame enquiry, put the standard and edition, grade, thickness, width, length, quantity and dimensional requirements into one revision-controlled request. Mark which requirements need the designer’s decision.
- 1Order: material/condition, dimensions and further processing
- 2Supplied item: full plate or identified cut blank
- 3Evidence: applicable inspection and document references
A purchasing record for a hypothetical frame. The highlighted blank is not a recommended cutting layout; the diagram gives no grade equivalence, design load or test result.
Ask for the actual supplied condition
State the required delivery/heat-treatment condition where applicable, and ask the supplier to identify the condition of the offered stock. “Available grade” is not an answer if the order also requires a particular condition or additional testing. Have proposed differences reviewed before accepting them.
Tell the supplier about planned cutting, forming, welding and later heat treatment. The catalogue includes further intended processing among the information for an order.[1] That information supports discussion with the material and fabrication specialists; it does not qualify a welding procedure or authorize changing the specified steel.
Resolve the inspection and document scope before pricing
Separate mandatory material requirements from extra or project-specific inspection. If ultrasonic testing, additional mechanical tests, third-party documentation or witness attendance is required, ask for the applicable method/standard, scope, criteria, stage and deliverables in the offer. Do not assume a generic “mill certificate included” covers them.
The frame example below is a question structure, not a completed order or a test list required for all plates. The responsible design and quality teams must select the requirements appropriate to the actual product.
| Input | Record in the enquiry | Ask the supplier to state |
|---|---|---|
| Material | Record in the enquiryStandard/edition, grade and required condition | Ask the supplier to stateOffered designation, condition and any deviation |
| Geometry | Record in the enquiryThickness, width, length, quantity and tolerances | Ask the supplier to stateFull plate/cut blank, edge state and included cutting |
| Processing | Record in the enquiryIntended forming, welding and later heat treatment | Ask the supplier to stateInformation or restrictions needing technical review |
| Inspection | Record in the enquiryRequired tests, methods, scope and criteria | Ask the supplier to stateIncluded work, extra cost, timing and reports |
| Documents | Record in the enquiryRequired document type, identification and witness scope | Ask the supplier to stateRecords supplied and how they identify the delivered items |
| Commercial basis | Record in the enquiryQuantity unit, packing, handover and required date | Ask the supplier to statePrice basis, exclusions and schedule assumptions |
Keep stock evidence connected to cut blanks
If the offer is for cut blanks, ask how the source plate identity and relevant records will remain connected to each delivered item or agreed batch. Also define dimensions and edge condition after cutting, any finishing allowance and what is actually inspected before shipment.
Resolve that arrangement while comparing offers, rather than asking the receiving team to reconstruct the source from an unlabelled pile. The existing traceability guide goes into the relationship between certificates, lots and delivered items. This article focuses on putting that requirement into the plate order.
Compare exceptions before approving a price
Return each quotation to the same enquiry revision. List differences in supplied form, condition, cutting, testing, documents, quantity basis and delivery. Ask for an explicit revised offer where a point is missing; silence does not confirm that an extra requirement is included.
Keep accepted deviations and their decision owners with the order. If an equivalent grade or another supply condition is proposed, route it through the responsible material-change review. A certificate can report what was supplied, but does not itself approve a change to the design requirement.
Questions to send your supplier
Open supplier questions
Product: plate/cut blanks for a welded machine frame Enquiry and drawing revision: Material standard/edition, grade and required delivery/heat-treatment condition: Thickness, width, length, tolerances and quantity/unit: Full plates or cut blanks; cutting, edge state and finishing allowance: Planned forming, welding and later heat treatment: Required tests/methods, scope, criteria, stage and reports: Document type, item/lot identification, third-party or witness needs: Please state offered material/condition, exclusions and every deviation. Price basis, packing, handover, destination and required dates:
Sources
- JFE Steel — Steel plate catalogue, Guide for order placing (printed p.40)
Order inputs cover dimensions, specific requirements, intended further processing and inspection/document arrangements. Not a confirmation of current stock, grade equivalence or project acceptance.