POSCO: Pohang and Gwangyang steelworks, products and sourcing

Pohang and Gwangyang steelworks, products and sourcing.

Ownership, names and history

POSCO operates the major integrated steelworks at Pohang and Gwangyang. In documentation, the producing works matters as much as the brand.

Products and manufacturing capability

The product system includes heavy plate, hot- and cold-rolled flat products, electrical steel, stainless-related product families and wire rod. Available products and sizes depend on the individual works and line.

What this means for buyers

For plate procurements, request the precise plate mill, manufacturing route, relevant class or project approvals, applicable testing conditions, and mill test certificate samples.

Common confusion to avoid

The POSCO name may appear on quotations through sellers or affiliates; trace the heat to the original producing works.

Practical procurement checklist

• Identify the exact legal manufacturer, producing works, seller and mill-test-certificate issuer.
• Confirm the offered grade, dimensions, processing route, heat treatment and testing requirements for that works.
• Obtain current product-/works-specific certificates and confirm expiry and grade/thickness scope.
• Verify project or end-user AML/AVL separately: a group affiliation never transfers approval automatically.
• Distinguish stated annual capacity, reported crude-steel output and shipment figures.
• Check whether historical names on stock MTCs match the manufacturer at the time of production.

References and verification sources

• www.kosa.or.kr
• Korea Iron & Steel Association — members