FAQ & Resources
Find answers to common questions and access helpful resources about steel coils, specifications, and ordering.
Steel Coils Buying Guide
Understanding Steel Grades
Steel grades are classified based on their chemical composition and mechanical properties. Common designations include ASTM (American), EN (European), and JIS (Japanese) standards. Each grade is optimized for specific applications—structural grades for construction, automotive grades for vehicle manufacturing, and corrosion-resistant grades for harsh environments.
Selecting the Right Thickness
Thickness selection depends on your application's structural requirements and forming processes. Thinner gauges (0.3-2mm) are ideal for stamping and roll forming. Medium gauges (2-6mm) suit general fabrication. Heavier gauges (6mm+) are used for structural applications requiring high strength.
Surface Finish Considerations
Surface finish affects both appearance and performance. Mill finish is economical for applications where appearance isn't critical. Pickled and oiled provides better corrosion protection. Bright annealed offers superior surface quality for visible applications. Coated finishes like galvanized or painted provide enhanced corrosion resistance.
Calculating Your Requirements
To determine the quantity needed, calculate the total surface area of your project and factor in material waste (typically 10-15%). Consider coil width to minimize cutting waste. Our sales team can help optimize your order to reduce costs while meeting your project requirements.