1. Core Advantages - Three Section Geometry Logics
Corners buy stiffness. At equal perimeter and wall, a square section reaches about 1.5–2.1× the bending stiffness of a round tube - and over 3× under directional loading.
Rectangle directs the stiffness. A taller profile puts fiber farther from the neutral axis - up to 3× the bending stiffness of a square at the same weight, pointed where your load is.
Closed section, flat mounting. Four flat faces mount, bolt and bond directly - with closed-section torsional performance that beats round in combined bending and twist.
Hengshui Aohong Technology Co.,Ltd.ytcarbonfiber.com
2. Parameter Table (Typical Values)
| Parameter | Typical value |
|---|---|
| Section | Square / rectangular |
| Axial strength | ≥ 800 MPa (0° layup) |
| Flexural modulus | ≥ 120 GPa (0° layup) |
| Density | 1.55 – 1.60 g/cm³ |
| Width × height | Custom |
| Wall thickness | Custom |
| Straightness | ≤ 1 mm/m typical |
| MOQ | Custom, small batch |
Typical values; section and wall locked to your frame.
3. Customization - Match the Profile
Section size and aspect ratio to your load direction.
Wall and layup per bending/torsion mix.
Length and ends to your assembly.
Features - holes, slots, bonded joints.
4. Company Advantages - Factory
Stock + custom. Standard sections ship fast; framed tubes to order.
Export documents ready. Commercial invoice, packing list, HS code per order.
Flexible shipping. Express for samples, sea freight for bulk.
Where we ship. Supplying [machine builders /frame makers] in [US / EU / Asia ].
5. FAQ
Q: Why square over round? At equal material, a square section bends less and mounts flat - it's geometry, not just material.
Q: When is rectangular better? When the load is one-directional - a taller profile puts fiber far from the neutral axis for up to 3× the bending stiffness.
Q: What about torsion? Closed square sections hold up well in combined bending and twist, especially with ±45° layers.
Q: Can you size to my frame? Yes - section, wall and length matched to your load and envelope.
Q: Shipping time? Stock in 5-15 days; custom quoted per destination.
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