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Cold-formed steel is a type of economical section steel produced from hot-rolled or cold-rolled steel sheets and strips through continuous roll forming, press braking, or drawing at room temperature. Compared with hot-rolled sections, it offers advantages such as light weight, optimized cross-sections, and high production efficiency, making it widely used in light-gauge steel structures and non-load-bearing components. Common foreign standards include ASTM A1003 (USA), EN 10162 (Europe), JIS G3350 (Japan), and BS 5950-5 (UK), with typical grades such as ASTM A653 Grade 33, S280GD+Z (EN), SGC400 (JIS), and BS 3505 Grade 4. To compare standards, search “cold formed steel ASTM vs EN”; for mechanical properties, use “cold formed steel yield strength chart”; for common section types, search “cold formed C channel vs U channel”; for international grade cross-referencing, use “cold formed steel equivalent grade cross reference”.
Cold-formed steel in China mainly follows GB/T 6725 and GB/T 6728, with common grades including Q195, Q235B, Q355B, and Q420B. Structural cold-formed steel is classified into ordinary structural, mechanical structural, and building structural types, with common cross-sections such as round, square, rectangular, C-shaped, Z-shaped, and U-shaped. To cross-reference Chinese grades with international standards, search “Q355B equivalent in ASTM cold formed”; for section properties, use “GB/T 6728 section properties table”; for quality control in roll forming, search “cold roll forming tolerances China”; for domestic mill certificates, use “China cold formed steel mill certificate example”.
Cold-formed steel is widely used in steel building purlins, wall girts, studs, trusses, sandwich panel frames, as well as in racks, solar panel mounts, truck chassis, and highway guardrails. In light-gauge steel villas, C-shaped and U-shaped cold-formed steel are combined to form wall frames; in warehousing and logistics, cold-formed steel is used for heavy-duty rack uprights and beams. For solar mount design, search “solar mounting cold formed steel C section”; for light-gauge steel framing connections, use “light gauge steel framing connection details”; for rack load capacity, search “pallet rack upright cold formed section capacity”; for international design guides, use “cold formed steel design guide AISI S100”.
In international sourcing, key factors to consider include steel grade, galvanized coating weight (e.g., Z100, Z275), section dimensions, and forming tolerances (e.g., bend angle, twist). Common surface treatments include hot-dip galvanizing, color coating, or passivation. European grade S280GD+Z is suitable for general structures, while ASTM A653 SS Grade 50 (USA) is used for high-strength applications. To find coating weight standards, search “galvanized coating weight cold formed steel”; to compare C and Z section efficiency, use “C purlin vs Z purlin bending strength”; for international spot prices, use “cold formed steel price list USA 2025”; for a global supplier directory, use “cold formed steel suppliers Europe directory”.
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