| Relevant experience | Experience producing the required rebar type, grades, sizes, and applicable standard—not just general steelmaking experience. | Redacted order records, product certificates, audit records, and references for comparable applications. | Check whether the evidence covers the same product specification and market requirements as the project. Treat years in business alone as insufficient proof of product capability. |
| Applicable standards | Ability to manufacture and document products to the project’s specified standard, such as ASTM A615/A615M, ASTM A706/A706M, or EN 10080 where applicable. | Current product certificates and test reports that identify the standard, grade, bar size, heat or batch, and test results. | Match the certificate to the purchase specification. Do not assume different standards or grades are interchangeable; confirm any substitution with the project’s responsible engineer. |
| Production capacity | Available output for the requested product mix, delivery schedule, and order volume. | Documented production schedule, recent output records for relevant products, planned maintenance, and written confirmation of available capacity. | Compare the committed quantity and delivery dates with the project schedule. Ask how capacity is allocated during peak demand and whether the quoted output is reserved for the order. |
| Size and grade range | Whether the rolling and finishing lines can produce the required nominal sizes, grades, lengths, and rib patterns. | Current product range, mill capability records, sample certificates, and dimensional inspection results for the requested sizes. | Verify every size and grade on the bill of quantities rather than relying on a general product catalogue. Confirm cut lengths, tolerances, and bundling requirements in writing. |
| Production process control | Controls from incoming raw material and steelmaking through casting, rolling, cooling, finishing, and final inspection. | Process flow diagram, control plans, calibration records, inspection procedures, and traceability procedures. | Check that control points are documented and that changes or nonconforming material are recorded and managed. Request a process audit when project risk or order scale warrants one. |
| Chemical and mechanical testing | Verification of the properties required by the order, including chemical composition and specified tensile, yield, elongation, bend, or other tests. | Heat- or batch-linked test reports and information on the laboratory’s equipment, calibration, and testing procedures. | Compare reported results with the exact acceptance criteria in the specified standard and contract. ISO 15630-1 provides test methods for reinforcing steel; it does not replace the product specification or define every project’s acceptance limits. |
| Quality management | Whether quality responsibilities, document control, corrective actions, and inspection records are consistently managed. | Quality-management-system certificate, certificate scope and validity, audit findings, and examples of corrective-action records. | Verify certificates with the issuing certification body and check that the scope covers the relevant manufacturing site and activities. ISO 9001 certification is not, by itself, proof that a particular rebar batch meets its product specification. |
| Traceability | Ability to link delivered bundles to production heats or batches, inspection records, and product certificates. | Sample bundle tags, heat or batch identification records, and a demonstration of how records are retrieved. | Test a sample traceability chain from bundle marking to the corresponding certificate and production records. Confirm that identification remains legible through storage and shipping. |
| Delivery and logistics | Ability to meet the agreed shipping plan, packaging requirements, and destination documentation requirements. | Delivery schedule, loading plan, packaging specification, shipping documents, and records of comparable deliveries. | Confirm responsibilities for transport, delivery terms, inspections, and delays in the contract. Check that bundle weights, labels, and documents match the order requirements. |
| Commercial and technical support | Clarity of quotations, change control, document response times, and procedures for addressing quality claims. | Itemized quotation, agreed technical submittal list, claims procedure, and named contact points for production and quality matters. | Resolve specification gaps before purchase-order release. Record agreed tolerances, inspection arrangements, document deadlines, and remedies for nonconforming products in the contract. |
