Heat Number
/glossary/heat-numberUnique identifier for a batch of steel from a single furnace melt, traceable on MTC.
In detail
Heat Number (or Heat Code) is the unique alphanumeric identifier assigned to a batch of steel produced from a single furnace melt. It enables traceability from finished pipe back to the original chemical composition and mechanical test results recorded on the MTC. Heat numbers are stamped or stenciled on pipe ends and appear on all quality documentation. In case of quality issues, the heat number allows investigation of the specific steel batch and identification of affected material in inventory or the field.
Where you'll meet this in procurement
You will meet Heat Number in inspection plans, dispatch packs, and tender checklists. Keep heat identity, certificate type, and any third-party witness tied to the order so Heat Number is usable evidence at site acceptance—not a loose attachment after delivery.