ASTM A36 4140 1045 Hot Rolled Carbon Steel Flat Bar 12-300mm Width 3-60mm Thickness for Building Materials
Flat steel refers to rectangular cross-section steel with widths ranging from 12-300mm and thicknesses from 3-60mm, featuring slightly blunt edges. This versatile material serves as finished steel or as raw material for welding pipes and rolling thin slabs.
- Hoop iron manufacturing
- Tool and mechanical part production
ZhengDe Metal offers an extensive selection of flat bars in various materials including alloy steel, carbon steel, aluminum, brass, and tool steel. Available in standard sizes with custom cut-to-fit services.
Ideal for general fabrication, maintenance repairs, agricultural equipment, and transportation applications. Features excellent weldability, formability, and machinability.
Manufactured from rolled steel with precise dimensional accuracy and smooth surface finish. Commonly used in fixtures, mounting plates, and precision machine components.
Lightweight and corrosion-resistant aluminum flat bar suitable for various fabrication projects including framework, braces, supports, trim, gussets, and mounting plates.
| Width (mm) | 4mm | 5mm | 6mm | 7mm | 8mm | 9mm | 10mm | 11mm | 12mm | 14mm | 16mm | 18mm | 20mm | 22mm | 25mm | 28mm | 30mm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12 | 0.38 | 0.47 | 0.57 | 0.66 | 0.75 | ||||||||||||
| 14 | 0.44 | 0.55 | 0.66 | 0.77 | 0.88 | ||||||||||||
| 16 | 0.5 | 0.63 | 0.75 | 0.88 | 1 | 1.15 | 1.26 | ||||||||||
| 18 | 0.57 | 0.71 | 0.85 | 0.99 | 1.13 | 1.27 | 1.41 | ||||||||||
| 20 | 0.63 | 0.79 | 0.94 | 1.1 | 1.26 | 1.41 | 1.57 | 1.73 | 1.88 | ||||||||
| 22 | 0.69 | 0.86 | 1.04 | 1.21 | 1.38 | 1.55 | 1.73 | 1.9 | 2.07 | ||||||||
| 25 | 0.79 | 0.98 | 1.18 | 1.37 | 1.57 | 1.77 | 1.96 | 2.16 | 2.36 | 2.75 | 3.14 | ||||||
| 28 | 0.88 | 1.1 | 1.32 | 1.54 | 1.76 | 1.98 | 2.2 | 2.42 | 2.64 | 3.08 | 3.53 | ||||||
| 30 | 0.94 | 1.18 | 1.41 | 1.65 | 1.88 | 2.12 | 2.36 | 2.59 | 2.83 | 3.36 | 3.77 | 4.24 | 4.71 | ||||
| 32 | 1.01 | 1.25 | 1.5 | 1.76 | 2.01 | 2.26 | 2.54 | 2.76 | 3.01 | 3.51 | 4.02 | 4.52 | 5.02 | ||||
| 36 | 1.13 | 1.41 | 1.69 | 1.97 | 2.26 | 2.51 | 2.82 | 3.11 | 3.39 | 3.95 | 4.52 | 5.09 | 5.65 | ||||
| 40 | 1.26 | 1.57 | 1.88 | 2.2 | 2.51 | 2.83 | 3.14 | 3.45 | 3.77 | 4.4 | 5.02 | 5.65 | 6.28 | 6.91 | 7.85 | 8.79 | |
| 45 | 1.41 | 1.77 | 2.12 | 2.47 | 2.83 | 3.18 | 3.53 | 3.89 | 2.24 | 4.95 | 5.65 | 6.36 | 7.07 | 7.77 | 8.83 | 9.89 | 10.6 |
| 50 | 1.57 | 1.96 | 2.36 | 2.75 | 3.14 | 3.53 | 3.93 | 4.32 | 4.71 | 5.5 | 6.28 | 7.07 | 7.85 | 8.64 | 9.81 | 10.99 | 11.78 |
| 56 | 1.76 | 2.2 | 2.64 | 3.08 | 3.52 | 3.95 | 4.39 | 4.83 | 5.27 | 6.15 | 7.3 | 7.91 | 8.79 | 9.67 | 10.99 | 12.31 | 13.19 |
| 60 | 1.88 | 2.36 | 2.83 | 3.3 | 3.77 | 4.24 | 4.71 | 5.18 | 5.65 | 6.59 | 7.54 | 8.48 | 9.42 | 10.36 | 11.78 | 13.19 | 14.13 |
| 63 | 1.98 | 2.47 | 2.97 | 3.46 | 3.95 | 4.45 | 4.94 | 5.44 | 5.93 | 6.92 | 7.91 | 8.9 | 9.69 | 10.88 | 12.36 | 13.85 | 14.34 |
| 65 | 2.04 | 2.55 | 3.06 | 3.57 | 4.08 | 4.59 | 5.1 | 5.61 | 6.12 | 7.14 | 8.16 | 9.19 | 10.21 | 11.23 | 12.76 | 14.29 | 15.31 |
| 70 | 2.2 | 2.75 | 3.3 | 3.85 | 4.4 | 4.95 | 5.5 | 6.04 | 6.59 | 7.69 | 8.79 | 8.89 | 10.99 | 12.09 | 13.74 | 15.39 | 16.49 |
| 75 | 2.36 | 2.94 | 3.53 | 4.12 | 4.71 | 5.3 | 5.89 | 6.48 | 7.07 | 8.24 | 9.42 | 10.6 | 11.78 | 12.95 | 14.72 | 16.49 | 17.66 |
| 80 | 2.51 | 3.14 | 3.77 | 4.4 | 5.02 | 5.65 | 6.28 | 6.91 | 7.54 | 8.79 | 10.05 | 11.3 | 12.56 | 13.82 | 15.7 | 17.58 | 18.84 |
| 85 | 2.67 | 3.34 | 4 | 4.67 | 5.34 | 6.01 | 6.67 | 7.34 | 8.01 | 9.34 | 10.68 | 12.01 | 13.35 | 14.68 | 16.68 | 18.68 | 20.02 |
| 90 | 2.83 | 3.53 | 4.24 | 4.95 | 5.56 | 6.36 | 7.07 | 7.77 | 8.48 | 9.89 | 11.3 | 12.72 | 14.13 | 15.54 | 17.65 | 19.78 | 21.2 |
| 95 | 2.98 | 3.73 | 4.47 | 5.22 | 5.97 | 6.71 | 7.46 | 8.2 | 8.95 | 10.44 | 11.93 | 13.42 | 14.92 | 16.41 | 18.84 | 20.88 | 22.37 |
| 100 | 3.14 | 3.93 | 4.71 | 5.5 | 6.28 | 7.07 | 7.85 | 8.64 | 9.42 | 10.99 | 12.56 | 14.13 | 15.7 | 17.27 | 19.63 | 21.98 | 23.55 |
| 105 | 3.3 | 4.12 | 4.95 | 5.77 | 6.59 | 7.42 | 8.24 | 9.07 | 9.89 | 11.54 | 13.19 | 14.84 | 16.49 | 18.18 | 20.61 | 23.08 | 24.73 |
| 110 | 3.45 | 4.32 | 5.18 | 6.04 | 6.91 | 7.77 | 8.64 | 9.5 | 10.36 | 12.09 | 13.82 | 15.54 | 17.27 | 19 | 21.59 | 24.18 | 25.91 |
| 120 | 3.77 | 4.71 | 5.65 | 6.59 | 7.54 | 8.48 | 9.42 | 10.36 | 11.3 | 13.19 | 15.07 | 16.96 | 18.84 | 20.72 | 23.55 | 26.38 | 28.26 |
| 125 | 3.93 | 4.91 | 5.89 | 6.67 | 7.85 | 8.83 | 9.81 | 10.76 | 11.78 | 13.74 | 15.7 | 17.66 | 19.63 | 21.5 | 24.53 | 27.48 | 29.44 |
| 130 | 4.08 | 5.1 | 6.12 | 7.14 | 8.16 | 9.18 | 10.21 | 11.23 | 12.25 | 14.29 | 16.33 | 18.87 | 20.41 | 22.45 | 25.51 | 28.57 | 30.62 |
| 140 | 4.4 | 5.5 | 6.59 | 7.69 | 8.79 | 9.89 | 10.99 | 12.09 | 13.19 | 15.39 | 17.58 | 19.78 | 21.98 | 24.18 | 27.48 | 30.77 | 32.97 |
| 150 | 4.71 | 5.89 | 7.07 | 8.24 | 9.42 | 10.6 | 11.78 | 12.95 | 14.13 | 16.49 | 18.84 | 21.2 | 23.55 | 25.91 | 29.44 | 32.97 | 35.33 |
- Quality First: Strict adherence to production standards with comprehensive inspection protocols
- Competitive Pricing: Market-based pricing with volume discounts available
- Transaction Security: Complete protection of customer funds throughout the purchasing process
- After-Sales Support: Comprehensive customer service and problem resolution
- Long-Term Partnership: Commitment to quality, competitive pricing, and reliable service for sustained business relationships
Shandong Zhengde Metal Manufacturing Co., Ltd. is an integrated enterprise specializing in production and sales of hot-rolled steel coils, cold-rolled steel coils, galvanized steel coils, color-coated steel coils, section steel, steel pipes, steel wires, metal mesh, stainless steel, aluminum, copper, and other metal products. With five production and sales bases across Binzhou, Liaocheng, Wuxi, Tianjin, Jinan, and Tai'an, the company operates over 100 production lines with 4 nationally recognized laboratories, 2 technical engineering centers, and 5 enterprise technology centers. Products are exported to more than 50 countries across North America, South America, Europe, Africa, Oceania, Middle East, and Southeast Asia.
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