Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe
Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe
Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe
Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe
Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe
Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe
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Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model PipeBlack Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model PipeBlack Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model PipeBlack Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model PipeBlack Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model PipeBlack Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe

Black Carbon Fiber Square Tube 3mm–10mm OD | Hollow RC Model Pipe

HomeDIYer
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By HomeDIYer®

Price:
$1.40 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Black Carbon Fiber Square Tube — Lightweight Hollow Pipe for RC Models & DIY Frames

If you've ever had a plastic or aluminum frame arm snap mid-flight or flex under load, you know how frustrating it is to rebuild from scratch. Makers, RC pilots, and robotics hobbyists who need a rigid, low-mass structural member turn to carbon fiber square tube as the go-to solution — and for good reason.

Each tube in this listing is a pultruded black carbon fiber composite square hollow tube, 200mm (≈7.9") in length. Available outer dimensions range from 3mm (≈1/8") to 10mm (≈3/8"), with a corresponding inner bore that leaves a consistent wall on all four sides. Sizes are listed in the format OD×OD×ID×ID×Length: for example, 6×6×5×5×200mm means a 6mm outer square, 5mm inner bore, 200mm long. You can order 1, 2, 3, 5, or 10 pieces per variant to match your project quantity.

These carbon fiber square hollow tubes are well-suited for RC airplane fuselage spars, FPV drone frame arms, lightweight antenna booms, robotic linkage rods, and custom DIY structural frames where minimizing weight without sacrificing rigidity is the primary design goal.

ℹ️ Compatibility Note: These square tubes fit standard RC frame clamps and brackets designed for square-profile tubing. Match the OD (outer dimension) in the variant name to your clamp's bore size. Inner bore dimensions are also listed per variant — confirm both before ordering.

✅ Key Features of These Carbon Fiber Square Hollow Tubes

  • ⚖️Low Weight, High Rigidity — Carbon fiber composite delivers a stiffness-to-weight ratio that outperforms aluminum in RC frame arm and drone boom applications, keeping your build light without adding flex.
  • 📐Precise Square Profile — The square cross-section resists rotation in clamps and brackets, making these tubes ideal for anti-rotation mounts on RC model frames and robotic linkages.
  • 🔩Consistent Wall Thickness — Uniform wall on all four sides ensures predictable load distribution — important for structural hollow tube applications where off-center walls can cause stress concentrations.
  • ✂️Machinable & Cuttable — Can be trimmed to length with a rotary tool or fine-tooth blade, letting you adapt each 200mm carbon fiber square tube to your exact frame dimension without special tooling.
  • 🌧️Corrosion-Resistant Composite — Unlike steel or bare aluminum, carbon fiber does not rust or oxidize, making these hollow square tubes suitable for outdoor RC models and weather-exposed drone frames.
  • 📦Flexible Pack Quantities — Available in 1, 2, 3, 5, or 10-piece packs so you can order exactly what a single repair or a full multi-arm RC frame build requires, without overstocking.

📐 Technical Specifications — Carbon Fiber Square Hollow Tube

Material Carbon fiber composite (pultruded)
Profile Shape Square hollow tube
Surface Finish Matte black
Length 200mm (≈7.9") per piece
Available OD × ID 3×2mm / 4×3mm / 5×4mm / 6×5mm / 8×6mm / 10×8mm (all square cross-section)
Wall Thickness (per side) Typically 0.5mm (3–4mm OD) to 1mm (5–10mm OD) — see variant for exact OD/ID
Pack Quantity Options 1 / 2 / 3 / 5 / 10 pieces
Typical Application RC model frames, drone arms, antenna booms, robotic linkages, DIY structural tubes
Cutting Method Rotary tool, diamond blade, or fine-tooth saw (wear dust mask)
Corrosion Resistance Inherently corrosion-resistant; seal cut ends with CA glue for outdoor use
Color Black
Country of Origin See variant options
⚠️ Cutting Safety: Carbon fiber dust is a respiratory and skin irritant. Always wear an N95 or better dust mask, safety glasses, and gloves when cutting or sanding these tubes. Work in a ventilated area or use wet-cutting methods.

❓ Frequently Asked Questions

How do I choose the right size carbon fiber square tube?

Match the outer dimension (OD) to your frame slot or mounting bracket. Each size is listed as OD×OD×ID×ID×Length — for example, 6×6×5×5×200mm means a 6mm outer square with a 5mm inner bore and 200mm (≈7.9") length. Measure your existing tube or channel opening before ordering. When in doubt, size up — it's easier to shim a slightly loose fit than to force an oversized tube.

What is the wall thickness of each tube size?

Wall thickness is typically 0.5mm per side for the smaller sizes (3mm and 4mm OD) and generally 1mm per side for the larger sizes (5mm–10mm OD). The exact inner and outer dimensions are listed in each variant name. If your application has a tight tolerance requirement, contact us to confirm before ordering.

Can these carbon fiber square tubes be used outdoors or in wet conditions?

Carbon fiber composite is inherently corrosion-resistant and does not rust or oxidize. However, the cut ends may expose raw fiber strands; sealing with thin CA glue or epoxy is generally recommended for prolonged outdoor or moisture-heavy use to prevent delamination at the ends.

Are these tubes compatible with standard RC frame hardware?

These square tubes are designed to fit standard RC model frame clamps and brackets that accept square-profile tubing. The 3mm–10mm OD range covers most common mini to mid-size RC frame standards. Verify your clamp's bore size against the OD listed in the variant name before purchasing.

How strong are these carbon fiber square tubes compared to aluminum?

Carbon fiber composite typically offers a higher stiffness-to-weight ratio than aluminum alloy of the same cross-section. These tubes are generally rigid enough for structural RC frame arms, antenna mounts, and lightweight drone booms where minimizing flex is the primary concern. Exact load ratings depend on span length and load direction — contact us if you need application-specific guidance.

Can I cut these tubes to a shorter length?

Yes. Carbon fiber square tubes can be cut with a rotary tool fitted with a cutting disc, a fine-tooth saw, or a diamond-coated blade. Always wear an N95 dust mask and safety glasses when cutting, as carbon fiber dust is an irritant. After cutting, seal the exposed end with thin CA glue to prevent fiber delamination.

What quantity options are available, and is bulk pricing better?

Each size is available in packs of 1, 2, 3, 5, or 10 pieces. Buying in larger packs reduces the per-piece cost and is useful for multi-arm RC frames, batch drone builds, or keeping spares on hand. Select your preferred quantity from the Packing Quantity option above.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

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