Why rebar prices vary by size, grade and mill

Billet and rolling costs influence rebar prices, while size, grade, line schedule, minimum production run, unit mass, mill location and available stock add differences. Evaluate technical specifications, the price basis, delivery terms and quality evidence together. A lower number is not a comparable offer if it covers a different grade, weight, coating or delivery scope.[1][2]

Iranian rebar offers often use A1–A4 commercial classifications, mill marks and domestic weight conventions. Overseas buyers should map these to the full standard and grade approved for the destination project, without assuming equivalence from rib shape or strength alone. Require heat-linked certificates, bundle identity and the specified bending, splice and welding evidence. Compare the same diameters and usable quantities in the agreed settlement currency at a named port or project location, including freight, handling, cutting yield and storage protection.

Frequently traded sizes generally have more continuous production and market availability. Higher grades or special chemistry and processing can add cost. Freight distance or temporary shortages can reverse mill-price rankings at destination.[2][3][4]

Compare the same grade and diameter on one date, unit, tax basis and destination. Convert per-bar quotes using actual mass into the cost per usable kilogram. Compare offers only after aligning units, the weight basis, taxes, packaging, loading, freight and quote validity. An omitted cost can outweigh the apparent saving per kilogram. Keep the supplier’s currency and payment date visible before converting to your purchasing currency.

Ask every supplier to answer the same written specification. This prevents an apparently cheaper offer from silently changing the product or scope. Confirm the following before comparing prices:

Use this table to structure the decision. It does not replace engineering calculations or the contract. The final column identifies the evidence to review before accepting an offer.

Errors often begin when a trade name replaces a technical specification, one photograph stands for an entire shipment, or the delivery scope is missing from the quote. Address these specific risks: Comparing different sizes; Ignoring bar weight; Expired quotes; Omitting freight and minimum load. Turn each risk into a written acceptance criterion, sampling requirement or traceable document.

A standard number alone does not demonstrate conformity. Specify the edition, grade, dimensions, tolerances, test method, heat or batch number and acceptance authority. For an import project, confirm the destination’s requirements and the project’s approved specification; an Iranian market designation is not automatic evidence of an equivalent local grade.

Price differences should be explainable. Normalization distinguishes actual product value, logistics and short-term scarcity.[4][5]

Before ordering, prepare a single comparison sheet covering the product, quantity, unit, theoretical and actual weight, base price, taxes, freight, delivery window, documents and acceptance criteria. Identify who pays each cost and who records discrepancies at receipt. This makes the negotiation clearer and gives the receiving team an agreed basis for checking the shipment.