Technical Info

At POSCO STEEL CO., LTD, precision, quality, and reliability are the foundation of our products. Our technical specifications provide detailed information on material dimensions, thickness, width, length, mechanical properties, chemical composition, surface finishes, tolerances, and processing capabilities.
All of our products, including stainless steel, carbon steel, galvanized steel, and aluminum, strictly follow international standards such as ASTM, EN, JIS, and GB. Every batch is rigorously inspected using advanced equipment including CMM, surface analyzers, tensile testers, thickness gauges, and laser measurement devices to ensure dimensional accuracy, surface quality, and mechanical performance.
We understand that industrial, construction, and manufacturing applications demand materials that are not only precise but also reliable and consistent. Our strict quality control system, combined with traceable inspection records, guarantees that each product meets the highest performance standards and provides confidence for downstream processing.
In addition, POSCO STEEL CO., LTD offers flexible customization options, including surface finish, edge type, coating, and mechanical specifications, allowing clients to choose the most suitable materials for their projects. By combining advanced technology, certified testing, and meticulous documentation, we deliver a professional solution you can trust, supporting both standard and specialized industrial applications worldwide.

Dimensions & Tolerances

Stainless Steel Coil

Our stainless steel coils are available in a wide range of thicknesses and widths, with precise tolerances suitable for deep drawing, stamping, cutting, and further processing. Coils are packed securely to ensure safety during transportation.
Thickness0.15 – 8.0 mm
Width600 – 2000 mm
Inner Diameter508 mm / 610 mm
Coil Weight3 – 25 MT / coil
LengthContinuous coil
ToleranceThickness: ±0.02 – ±0.05 mm
Width: ±2 mm

Stainless Steel Sheet / Plate

We supply both cold rolled and hot rolled stainless steel sheets and plates. With standard sizes and customized dimensions available, our sheets are widely used in construction, decoration, equipment manufacturing, and industrial applications.
Cold Rolled - Thickness0.3 – 3.0 mm
Cold Rolled - Width1000 / 1219 / 1500 mm
Cold Rolled - Length2000 / 2438 / 3000 mm or customized
Cold Rolled - ToleranceASTM A480 / EN 10088
Hot Rolled - Thickness3 – 100 mm
Hot Rolled - Width1500 / 1800 / 2000 / 2500 mm
Hot Rolled - Length6000 / 8000 / 10000 / 12000 mm
Hot Rolled - ToleranceEN 10029 Class A/B

Galvanized Steel (GI/GL)

Galvanized steel coils and sheets are coated with zinc to improve corrosion resistance. With options from regular spangle to zero spangle, they are ideal for roofing, wall panels, automotive parts, and home appliances.
Thickness0.2 – 3.0 mm
Width600 – 1500 mm
Coating WeightZ30 – Z275 g/m²
SpangleRegular / Small / Zero
Inner Diameter508 mm / 610 mm

Carbon Steel Coil & Sheet

Our carbon steel products cover hot rolled and cold rolled coils and sheets, suitable for structural parts, pipes, mechanical fabrication, and general engineering purposes. Strict dimensional control ensures stability and consistency.
Thickness0.2 – 20 mm
Width600 – 2000 mm
LengthUp to 12000 mm
ToleranceASTM A1011 / EN 10130

Aluminum Sheet & Plate

Aluminum coils and plates are lightweight yet strong, offering excellent corrosion resistance. They are widely used in aerospace, transportation, construction, and packaging industries. Both standard and customized sizes are available.
Coil - Thickness0.2 – 6.0 mm
Coil - Width500 – 2000 mm
Coil - Inner Diameter505 / 508 / 610 mm
Coil - Weight2 – 15 MT
Plate - Thickness6 – 200 mm
Plate - Width1000 – 2500 mm
Plate - Length2000 – 12000 mm
Plate - ToleranceASTM B209 / EN 573

Optional Edge & Surface Finish

Customers can choose between mill edge or slit edge, as well as multiple surface finishes including 2B, BA, Hairline, NO.4, and Mirror polish, to meet different functional and decorative requirements.
EdgeMill Edge / Slit Edge
Surface2B, BA, HL, NO.4, Mirror, Coated

R&D and Innovation

POSCO invests heavily in research and development, working with partners to pioneer green steel solutions, energy efficiency, and recyclable materials, helping clients succeed in a rapidly changing world.

Automation & Digitalization


We implement intelligent inspection, automated warehousing, and digital management systems to ensure efficiency, transparency, and accuracy at every stage of production and delivery.



Technology at POSCO is not just a capability, but a commitment — driven by innovation, secured by quality, and trusted by our partners.

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