Cutting of Outer round inner hexagonal tube
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Hexagonal Inside and Outside Round Steel Tube
Material
Hexagonal inside and outside round steel tubes are special-profile steel products combining a hexagonal exterior with a circular internal bore. Manufactured from high-quality carbon steel, alloy steel, or stainless steel, these tubes are widely used in mechanical parts, automotive components, and precision equipment where enhanced torque transmission and aesthetic design are required.
Specification
| Shape | Hexagonal outside, round inside |
| Outer Across Flats | 10 mm – 120 mm |
| Inner Diameter | 6 mm – 100 mm |
| Wall Thickness | 1 mm – 10 mm |
| Length | 1 m – 12 m (customized lengths available) |
| Manufacturing Process | Cold drawn, hot rolled, or precision seamless |
| Surface Finish | Black, polished, galvanized, or coated |
Key Features
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Unique Profile – Hexagonal exterior for anti-slip, decorative, or mechanical fitting purposes.
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Precision Bore – Round interior ensures uniform flow or shaft fitment.
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High Strength – Suitable for torque-bearing mechanical components.
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Customizable Materials – Available in carbon steel, alloy steel, or stainless steel.
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Versatile Applications – Used in machinery, furniture, automotive, and decorative structures.
Chemical Composition
| Element | C (max) | Si (max) | Mn | P (max) | S (max) |
| 10# | 0.07–0.13 | 0.17–0.37 | 0.35–0.65 | 0.035 | 0.035 |
| 20# | 0.17–0.23 | 0.17–0.37 | 0.35–0.65 | 0.035 | 0.035 |
Mechanical Properties
| Property | Tensile Strength | Yield Strength | Elongation | Impact Energy | Modulus of Elasticity |
| 10# | 335–470 | ≥ 205 | ≥ 33 | ≥ 39 | ~ 200 |
| 20# | 410–550 | ≥ 245 | ≥ 25 | ≥ 39 | ~ 200 |
Steel Grade
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Carbon Steel: Q235B, Q345B
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Alloy Steel: 20Cr, 40Cr, 42CrMo
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Stainless Steel: 304, 316L
Application
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Mechanical Engineering: Shafts, couplings, and torque-transmitting components
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Automotive Industry: Axles, drive shafts, steering columns
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Furniture & Decoration: Table frames, handles, and railing systems
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Hydraulic & Pneumatic Systems: Tubes for connectors and fittings
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Sports Equipment: Bicycle parts, fitness machine frames
Possible Alternative Grades
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ASTM A29 1010 / 1020 – Low carbon steels (USA)
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EN C10E / C20E – Non-alloy steels (Europe)
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JIS S10C / S20C – Carbon steels (Japan)
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IS 1570 C10 / C20 – Carbon steel grades (India)
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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Main Product:
Seamless Steel Tubes,
Welded Precision Steel Pipes,
Automotive Steel Tubes ,
Carbon steel tubes,
Stainless Steel Tubes,
Special Shaped Steel Tubes