Download the complete specification and dimension table for steel round bars.
Hot Rolled ASTM A36 A572 6mm – 100mm Steel Round Bar
Product Detail
| Standard | ASTM,JIS,EN,AISI,GB | Grade | AISI 4140, 4340, 1045, ASTM A36,A572,EN S235,S275,S355,GB Q235,Q355,JIS SS400 |
| Type | Carbon Steel Round Bar | Steel Grade | Carbon Steel |
| Application | Structural Steel Bar | Place of Origin | Tianjin, China |
| Tolerance | ±1% | Brand Name | Royal |
| Technique | Hot Rolled | Length | 6m-12m |
| Alloy Or Not | Non-Alloy | MOQ | 20 Tons |
| Processing Service | Cutting, Punching | Certification | MTC,ISO 9001,CE,SGS |
| Delivery Time | within 7 days | Payment Term | T/T |
Round Steel Bar Size
| Size in mm | Average Weight | |
| KG/MTR | KG/FT | |
| 10 | 0.62 | 0.18 |
| 12 | 0.9 | 0.3 |
| 14 | 1.2 | 0.4 |
| 16 | 1.6 | 0.5 |
| 18 | 2 | 0.6 |
| 20 | 2.5 | 0.8 |
| 22 | 3 | 0.9 |
| 24 | 3.56 | 1.08 |
| 25 | 3.9 | 1.2 |
| 28 | 4.8 | 1.5 |
| 30 | 5.55 | 1.69 |
| 32 | 6.3 | 1.9 |
| 34 | 7.14 | 2.18 |
| 36 | 8 | 2.44 |
| 40 | 9.9 | 3 |
| 45 | 12.49 | 3.81 |
| 50 | 15.4 | 4.7 |
| 56 | 19.34 | 5.89 |
| 60 | 22.2 | 6.8 |
| 63 | 24.47 | 7.46 |
| 63.5 | 24.86 | 7.58 |
| 65 | 26.05 | 7.94 |
| 70 | 30.2 | 9.2 |
| 73 | 32.86 | 10 |
| 75 | 34.72 | 10.58 |
| 78 | 37.51 | 11.43 |
| 80 | 39.5 | 12 |
| 83 | 42.47 | 12.95 |
| 85 | 44.55 | 13.58 |
| 90 | 50 | 15.2 |
| 92 | 52.19 | 15.91 |
| 93 | 53.39 | 16.27 |
| 95 | 55.65 | 16.95 |
| 100 | 61.66 | 18.79 |
| 105 | 67.98 | 20.72 |
| 110 | 74.6 | 22.74 |
| 115 | 81.64 | 24.88 |
| 125 | 96.34 | 29.36 |
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Round Steel Bar Customized Content
| Category | Options | Notes |
| Dimensions | Diameter, Length | Ø20–Ø300 mm; 6 m / 12 m or cut-to-length |
| Processing | Cutting, Threading, Machining, Drilling | Customized processing per drawings or application |
| Heat Treatment | Annealed, Normalized, Q&T | Selected based on required strength and service conditions |
| Surface Finish | Black, Turned, Peeled, Polished | Chosen for accuracy and appearance needs |
| Tolerance | Standard / Precision | Straightness and tight tolerances available |
| Marking & Packing | Custom labels, Heat No., Export packing | AISI grade & heat number marked; steel-strapped bundles or wooden cases |
Application
1.Construction & Structural: Steel round bars are common in the construction of building frames, structural supports, and layouts for infrastructure. They have a high load bearing for bridges, warehouses, and steel structures.
2.Machinery & Engineering Parts: It is utilized in the production of shafts, pins, axles, gears, and many other mechanical components that require precision. It provides a good combination of machinability, strength, and dimensional stability for precision engineering.
3.Automotive & Transportation: Used in the manufacture of automotive parts: drivetrain, suspension, and engine. High durability and toughness, dependable performance even in extreme stress and dynamic driving conditions.
4.Industrial Fabrication & Manufacturing: You can use it for bolts and fasteners, or any type of engineered parts. Simple to weld, machine and cut, perfect for any industrial fabrication project.
Why Choose Our Steel Round Bar
1. Direct Manufacturer Supply
We are a steel round bar product manufacturer and supplier.
Advantages: This ensures stable quality, competitive pricing, and reliable long-term supply.
2. Full Range of Steel Products
We supply steel round bars along with H beams, C channels, steel pipes, and sheet piles.
Advantages: One-stop sourcing helps customers reduce procurement cost and improve efficiency.
3. Strict Quality Control System
All products are produced under strict standards such as ASTM, EN, JIS, and GB.
Advantages: Every batch is inspected with Mill Test Certificates (MTC) before shipment.
4. Customized Production Capability
We support customized diameters, lengths, grades, and processing requirements.
Advantages: Flexible production meets different project and engineering needs.
5. Professional Export Experience
We have extensive experience exporting to Southeast Asia, the Middle East, Africa, Europe, and the Americas.
Advantages: Familiar with international logistics, documentation, and inspection requirements.
Packaging & Shipping
Packaging
Steel round bars are securely packed to ensure safe delivery:
1.Bundled with steel strips
2.Plastic film / woven bags for protection
3.Wooden pallets or wooden cases (optional)
4.Anti-rust protection for surface quality requirements
Shipping
We offer flexible global delivery solutions:
1.Sea freight (FCL / LCL)
2.Bulk cargo for large orders
3.Container shipment for standard sizes
4.FOB, CIF, CFR, EXW terms available
FAQ
1.Can you offer cutting or processing services?
Yes, we can do cutting, heat treatment, surface finishing and customized production according to the projects.
2.How do you control product quality?
We have strict quality control chemical composition test mechanical properties test dimensional control And with the MTC for every shipment.
3.How long is your lead time?
The leading time: 7-30days for production according to quantity and specification.
4.What kind of export services do you have?
We can provide full export documents, such as invoice, packing list, MTC, CoO, under FOB, CIF, CFR, EXW etc. terms.
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