Nestled in the heart of Kinshasa, Sadiki Metals stands as a trusted partner for industry and construction, proudly manufacturing and supplying robust carbon steel flat bars. We understand the unique demands of the Congolese market, which is why our products are crafted to deliver unwavering strength and reliability right here at home. Our commitment is to provide a foundational material that powers progress, supporting local projects with quality that builders and fabricators can depend on for every framework, bracket, and support beam.
The composition of our carbon steel flat bar is straightforward yet powerful, primarily iron with a measured carbon content that gives it notable strength. This simple formula results in excellent mechanical properties, including high tensile strength and good durability, allowing it to withstand significant stress and weight without bending or breaking. It’s a malleable material as well, making it relatively easy to cut, weld, and shape into the specific forms required for countless tasks, which is a key reason for its widespread use.
| Grade | Carbon Steel |
|---|---|
| Carbon Steel Square bar size | 4 to 100mm |
| CS Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Low Carbon Steel Hex Bar size | 2-100mm A/F |
| Carbon Steel Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| CS Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Low Carbon Steel Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Carbon Steel Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| CS Section | 3.0 to 12.0mm thickness |
| Low Carbon Steel Round bar size | Diameter: 3-~800mm |
| Carbon Steel Billet Size | 1/2″ to 495mm Diameter |
| CS Round Bar Standard Dimensions | Diameter / Height: Carbon Steel Rod and Bar Sizes : 0.5 inches / 0.625 inches / 0.75 inches / 0.875 inches / 1.0 inches / 1.125 inches / 1.25 inches / 1.375 inches / 1.5 inches / 1.75 inches / 2.0 inches / 2.25 inches / 2.5 inches / 2.75 inches / 3.0 inches / 3.25 inches / 3.5 inches / 3.75 inches / 4.0 inches / 4.25 inches / 4.5 inches / 5.0 inches / 5.25 inches / 5.5 inches / 6.0 inches / 7.0 inches / 8.0 inches / 9.0 inches. |
| Carbon Steel Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| CS Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Low Carbon Steel Technique | Carbon Steel Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Carbon Steel Condition | Hardened & tempered, annealed |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Form | Carbon Steel Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square Bar, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Processing | Bar cutting to 650mm |
| Our Carbon Steel Round bar conforms to NACE MR0175/ISO 15156 | |
| Carbon Steel Grades | C | Mn | Si | S Max. | P Max. |
|---|---|---|---|---|---|
| Ck 45 | 0.42/0.50 | 0.50/0.80 | 0.15/0.35 | 0.04 | 0.04 |
| Ck 55 | 0.52/0.60 | 0.60/0.90 | 0.15/0.35 | 0.04 | 0.04 |
| Ck 60 | 0.57/0.65 | 0.60/0.90 | 0.15/0.35 | 0.04 | 0.04 |
| SAE1006 | 0.08 max | 0.25/0.40 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1008 | 0.10 max | 0.30/0.50 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1010 | 0.08/0.13 | 0.30/0.60 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1018 | 0.15/0.20 | 0.60/0.90 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1020 | 0.18/0.23 | 0.30/0.60 | 0.10/0.30 | 0.09 | 0.04 |
| SAE1030 | 0.28/0.34 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1035 | 0.32/0.38 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1040 | 0.37/0.44 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1045 | 0.40/0.50 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| En-8D | 0.40/0.45 | 0.70/0.90 | 0.05/0.35 | 0.06 | 0.06 |
| En-9 | 0.50/0.60 | 0.50/0.80 | 0.05/0.35 | 0.06 | 0.06 |
| Grade | Yield Strength, | Tensile Strength, | Elongation at Break (in 50 mm) | Bulk Modulus (typical for steel) | Modulus of Elasticity | HBW | Poissons Ratio | Fatigue strength coefficient, of (Mpa) | Shear Modulus | Impacting Energy | Reduction of area, min: |
|---|---|---|---|---|---|---|---|---|---|---|---|
| a36 | 250 MPa | 400 – 550 MPa | 23.00% | 140 GPa | 200 GPa | 0.26 | 79.3 GPa | ||||
| 36300 psi | 58000 – 79800 psi | 23.00% | 20300 ksi | 29000 ksi | 0.26 | 11500 ksi | |||||
| EN45 | 35 (241) | 80 (551) | 40% | 204 Gpa | 948 | ≥63 | |||||
| EN19 | ≥930 Mpa | ≥1080 Mpa | ≥12 | 217 | ≥45 | ||||||
| 105 | 36,000 psi [250 MPa] | 70,000 psi (485 MPa] | 187 | 30% min | |||||||
| EN8 | ≥210 | ≥380 | ≥25 | ≤111HB | ≥50 |
Yes, common coatings for carbon steel flat bars include galvanizing, powder coating, zinc plating, epoxy coating, and polyurethane coating to enhance corrosion resistance and durability for various applications.
The different types of carbon steel flat bars include mild steel, medium carbon steel, high carbon steel, alloy steel, and tool steel, each offering various strength, hardness, and wear resistance properties.
Yes, carbon steel flat bars can be recycled. After use, they can be melted down and repurposed for new steel products, reducing waste and conserving resources in manufacturing.
You’ll find the carbon steel flat bar from Sadiki Metals forming the essential skeleton of so many projects around Kinshasa and beyond. It’s the unseen hero in the frameworks of new buildings, the sturdy supports for heavy machinery, and the reliable base for countless brackets and frames. From fabricating sturdy shelving and workbenches in workshops to creating structural components for gates and fences, its versatility is unmatched. It’s truly a fundamental building block for construction, manufacturing, and countless DIY endeavors, providing a solid backbone for innovation and growth.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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