Aiman Metals is a well-respected manufacturer and supplier of Carbon Steel Hollow Bars, proudly based in Kuala Lumpur, Malaysia. Known for their high-strength, precision-engineered metal products, Aiman Metals serves a variety of industries, including construction, automotive, machinery, and oil and gas. Their Carbon Steel Hollow Bars are crafted to meet strict international standards, guaranteeing top-notch performance, precise dimensions, and impressive durability. With state-of-the-art manufacturing facilities and a strong focus on customer satisfaction, Aiman Metals has earned a solid reputation for providing dependable hollow bar solutions that fulfill the technical and structural needs of both local and global markets.
Typically, Carbon Steel Hollow Bars are made from low to medium carbon steel grades like AISI 1018, 1020, or 1045. These steels contain about 0.15%–0.45% carbon, along with trace amounts of manganese and other elements, striking a perfect balance between strength, ductility, and machinability. In terms of mechanics, carbon steel hollow bars boast tensile strengths ranging from 400 to 800 MPa and yield strengths between 250 and 600 MPa, depending on the specific grade and heat treatment. Their consistent wall thickness and outstanding structural integrity make them perfect for machining, welding, and high-load applications, all while being cost-effective and versatile.
| 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, many manufacturers and suppliers offer carbon steel hollow bars in custom sizes and polishes. Specify your requirements to ensure the product meets your exact needs for applications.
Carbon steel hollow bars are offered in finishes like as-rolled, annealed, normalized, normalized and tempered, quenched and tempered, polished, and precision machined, tailored for structural, mechanical, or machining applications.
Carbon steel hollow bars come in various types, including seamless, ERW (Electric Resistance Welded), cold drawn, hot rolled, precision, low carbon, medium carbon, and high carbon grades.
Carbon Steel Hollow Bars are commonly utilized in situations where strength, machinability, and affordability are essential. You’ll often find them in the production of hydraulic and pneumatic cylinders, as well as in automotive components, machine parts, and construction supports. In the oil and gas industry, they’re relied upon for drill collars, shafts, and tooling parts due to their durability and resistance to wear. Plus, their uniform internal diameter and smooth finish make them ideal for precision machining in mechanical and structural engineering projects, ensuring reliable performance across a broad spectrum of applications.






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