Hot-finished
/glossary/hot-finishedSeamless pipe formed and sized while steel is at high temperature (~1200°C).
In detail
Hot-finished seamless pipe is produced by forming and sizing the pipe while the steel is at elevated temperature (~1100-1200°C). The process includes heating a billet, piercing it over a mandrel, and rolling/stretch-reducing to final dimensions while hot. Hot-finished pipes have relaxed dimensional tolerances (±1% OD, ±12.5% WT) and a mill-scale surface finish. They are cost-effective for boiler tubes, line pipe, and structural applications where tight tolerances are not required.
Where you'll meet this in procurement
You will meet Hot-finished in manufacturing notes, surface-finish call-outs, and precision-tube RFQs. Confirm that Hot-finished is required for the duty (tolerance, bore finish, or coating), and that the quote states the same process the inspector will verify on receipt.