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Help CenterSteel Round Bar，Material Grade，Carbon Steel: Q195, Q235, Q355, 20#, 45#, A3, SS400 Alloy Steel: 40Cr, 35CrMo, 42CrMo, 20CrMnTi
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Round Bar Product Full Description
Round bar is a solid long steel bar with a round cross section. It is manufactured from premium steel billets through hot rolling, cold drawing, cold rolling and precision finishing processes. The product features stable material composition, accurate dimensions, good straightness, high toughness and excellent mechanical strength.
We supply a complete range of carbon steel and alloy steel round bars with full specifications in stock. Custom fixed length cutting and special processing are available to meet various construction, machinery manufacturing and industrial processing requirements.
Material Grade
Carbon steel: Q195, Q235, Q355, 20#, 45#, A3, SS400
Alloy steel: 40Cr, 35CrMo, 42CrMo, 20CrMnTi
Special grades and customized chemical composition are acceptable.
Production Process
• Hot rolled round bar: black surface, cost-effective, widely used for construction and general machining.
• Cold drawn round bar: tight tolerance, good straightness, smooth surface.
• Bright / Polished / Peeled round bar: smooth finish, no cracks or burrs, suitable for precision parts, shaft and mold blank.
Specification
• Diameter: 6mm – 300mm
• Standard length: 6m, 9m, 12m
• Custom fixed length and cutting service available
• Surface finish: black, pickled, bright, polished, peeled
• Execution standard: GB/T 702, GB/T 699, GB/T 3077, ASTM, DIN, JIS
Product Features
1. Pure steel quality, uniform internal structure, good toughness and anti-bending performance.
2. High dimensional accuracy and perfect straightness, easy for cutting, turning and forging.
3. Smooth surface without cracks, slag inclusion and air bubbles. Stable batch quality.
4. Support secondary processing such as cutting, bending, chamfering and heat treatment.
5. High strength and stable mechanical performance for heavy-duty working conditions.
Application
Widely used in building steel structure, factory framework, mechanical parts, drive shaft, gear blank, mold blank, fasteners, bolts and nuts, hardware tools, automobile parts, engineering machinery and bridge engineering.
Service & Packaging
• Provide mill test certificate, quality guarantee document and inspection report.
• Support custom cutting, chamfering, quenching and tempering treatment.
• Standard export seaworthy packing with steel bundling and waterproof wrapping.
• Accept customized size, length and packaging according to customer requirements.
Detailed Description of H‑Beam
1. Product Introduction
H‑beam is an economical and high‑efficiency hot‑rolled or welded structural steel with an H‑shaped cross‑section. It consists of parallel flanges and a vertical web. The inner surface of flanges has no slope with right‑angle edges, featuring rational stress distribution and excellent strength‑to‑weight ratio. It is the core profile for steel structure engineering.
2. Product Classification (GB/T 11263‑2024)
1. HW Wide‑Flange H‑Beam: Flange width nearly equals beam height, high lateral stiffness, mainly used for steel columns and heavy‑load frames.
Round bar is a solid long steel bar with a round cross section. It is manufactured from premium steel billets through hot rolling, cold drawing, cold rolling and precision finishing processes. The product features stable material composition, accurate dimensions, good straightness, high toughness and excellent mechanical strength.
We supply a complete range of carbon steel and alloy steel round bars with full specifications in stock. Custom fixed length cutting and special processing are available to meet various construction, machinery manufacturing and industrial processing requirements.
Material Grade
Carbon steel: Q195, Q235, Q355, 20#, 45#, A3, SS400
Alloy steel: 40Cr, 35CrMo, 42CrMo, 20CrMnTi
Special grades and customized chemical composition are acceptable.
Production Process
• Hot rolled round bar: black surface, cost-effective, widely used for construction and general machining.
• Cold drawn round bar: tight tolerance, good straightness, smooth surface.
• Bright / Polished / Peeled round bar: smooth finish, no cracks or burrs, suitable for precision parts, shaft and mold blank.
Specification
• Diameter: 6mm – 300mm
• Standard length: 6m, 9m, 12m
• Custom fixed length and cutting service available
• Surface finish: black, pickled, bright, polished, peeled
• Execution standard: GB/T 702, GB/T 699, GB/T 3077, ASTM, DIN, JIS
Product Features
1. Pure steel quality, uniform internal structure, good toughness and anti-bending performance.
2. High dimensional accuracy and perfect straightness, easy for cutting, turning and forging.
3. Smooth surface without cracks, slag inclusion and air bubbles. Stable batch quality.
4. Support secondary processing such as cutting, bending, chamfering and heat treatment.
5. High strength and stable mechanical performance for heavy-duty working conditions.
Application
Widely used in building steel structure, factory framework, mechanical parts, drive shaft, gear blank, mold blank, fasteners, bolts and nuts, hardware tools, automobile parts, engineering machinery and bridge engineering.
Service & Packaging
• Provide mill test certificate, quality guarantee document and inspection report.
• Support custom cutting, chamfering, quenching and tempering treatment.
• Standard export seaworthy packing with steel bundling and waterproof wrapping.
• Accept customized size, length and packaging according to customer requirements.
Send Inquiry to This Supplier
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