Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of aisi 1045 cold drawn hexagonal seamless steel tube in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube
AISI 1045 Cold Drawn Hexagonal Seamless Steel Tube
(Standards: ASTM A108 / GB/T 3639)
●1045 Steel Hexagonal Pipes and Tubes-External Hexagon Internal Circle
●Hexagon steel pipe is one down-stream processing prodcuts from round seamless steel pipe. With two molds, it is cold drawn from round material. ●With over 5 years on this, we have mature technique in
advancing yields.
●Hexagon steel pipe has a better mechanics' performance than square pipe when it is used as strut. Six angles and surfaces decentralize the population load-carrying capability.
●Hexagon pipe now is a alternative product as structure pipe. It is widly used in auto parts, textile machinery parts and strut parts.
●Meanwhile, we can drill hole on the side surface or the abgle between two suface. The concentricity is strictly produce for permanent position.
1. Description:Hexagonal Steel Tube
2. Wall Thickness: 2-15mm
3. Side: 20-200 for hexagonal pipes
4. Length: As per your requirement, 1-6m commonly produced
5. Surface: 2B, BA, No. 1, No. 2, Hairline. Sand blast etc.
6. Place of origin: TISCO, BaoSteel, LISCO, etc.
7. Quality Assurance: MTC to be provided with goods, third party inspection acceptable
8. Shape: Hexagonal, rectangular, square, half round
External hexagon internal round, or visa versa
Chemical composition table
| Square Tube / Square Pipe / Square Hollow Section / SHS | Rectangular Tube / Rectangular Pipe / Rectangular Hollow Section / RHS | ||
| Out Diameter | Out Dimeter | Out Diameter | Out Diameter |
| Width x Width (inch) |
Width x Width (mm) |
Width x Width (inch) |
Width x Width (mm) |
| 3/4" x 3/4" | 20x20 | 3/4" x 1 1/2" | 20x40 |
| 1" x 1" | 25x25 | 1" x 2" | 25x50 |
| 1 1/4" x 1 1/4" | 30x30 | 1 1/4 x 2" | 30x50 |
| 1 1/2" x 1 1/2" | 40x40 or 38x38 | 1 1/2" x 2 1/2" | 40x60 |
| 2" x 2" | 50x50 | 1 1 /2" x 3" | 40x80 |
| 2 1/2" x 2 1/2" | 65x65 or 60x60 | 2"x 4" | 50x100 |
| 3" x 3" | 75x75 or 80x80 | 3" x 4" | 80x100 |
| 4"x 4" | 100x100 | 4" x 6" | 100x150 |
| 5"x5" | 125x125 | 4" x 8" | 100x200 |
| 6"x 6" | 150x150 | 6" x 8" | 150x200 |
| to | to | to | to |
| 15.7 inch x 15.7 inch | 400x400 | 10" x 20" | 250x500 |
Product Value:
✅ Excellent Machinability:
Post-drawing hardness ≤ HB197, machinability index ≥ 60% (with free-cutting steel 1215 as 100%). YG8 carbide tools are recommended, with a feed rate of 15–30 m/min. Machining efficiency is 30% higher compared to hot-rolled tubes.
Capable of withstanding up to 30% cold deformation, supporting bending, flaring, and reducing processes with a finished product yield rate of ≥ 97%.
✅ Surface Treatment Compatibility:
The seamless surface is suitable for galvanizing (Zn ≥ 8 μm), chrome plating (Cr ≥ 0.3 μm), painting, and other treatments. In neutral salt spray tests (ASTM B117), corrosion resistance exceeds 500 hours, meeting both aesthetic and protective requirements for hardware products.
Machining Data Comparison:
| Machining Type | Cold Drawn Tube Precision | Hot Rolled Tube Precision | Processing Time Comparison |
|---|---|---|---|
| Outer Diameter Turning | IT7–IT8 | IT10–IT11 | 40% increase in efficiency |
| Drilling | Hole tolerance ±0.05 mm | Hole tolerance ±0.2 mm | 60% reduction in defect rate |
FAQ
Q: Why would I use a hexagonal tube instead of round or square for a support strut?
A: Because six sides spread the load more evenly than four corners or a round surface. It gives better rigidity and vibration damping without adding weight – that's why textile machinery and automotive suspension parts often switch to hex. We've seen fewer fatigue cracks in field returns.
Q: How much tighter is cold‑drawn hex compared to hot‑rolled round for turning?
A: Noticeably tighter. Cold drawing brings outer diameter to IT7–IT8, while hot‑rolled is IT10–IT11. Surface finish is also smoother, so you skip the first roughing pass. Machine shops tell us they cut turning time by about 40% on the same part.
Q: Can you drill mounting holes on the flat side or right on the corner angle?
A: Yes, we can drill on either the side surface or the angle between two faces. We control concentricity to keep the hole centred – important if you use the tube as a permanent locating pin or bracket arm. We do this in‑house with a custom jig.
Q: Does the surface take zinc or chrome plating without peeling?
A: It does. The cold‑drawn seamless surface is dense and free of scale. We've run neutral salt spray tests per ASTM B117 – zinc plating (≥8μm) and chrome (≥0.3μm) both pass 500 hours without blistering. Good for outdoor hardware or decorative covers.
Q: What's the minimum order and how fast can I get a sample?
A: For common sizes like 40x40 or 50x50, we keep stock in our warehouse. Samples ship in 3 working days. Bulk orders (over 500kg) take 2–3 weeks after we confirm your size and wall thickness. We can mix different dimensions in one ton to help you test.
Q: Do you charge by theoretical weight or actual scale weight for hex tubes?
A: Actual weighed weight – we put each bundle on a certified floor scale and note the net kg on the packing list. Hexagonal sections have a different area calculation from round, so theoretical weight often overstates or understates. You pay for what you actually receive.
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