Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD
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Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm ODCarbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD

Carbon Fiber Square Tube 500mm — Square & Round Bore, 1.4mm to 12mm OD

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Beschreibung

Carbon Fiber Square Tube 500mm — Rigid Hollow Tubing with Square or Round Bore for RC & Model Builds

RC airplane builders, drone frame fabricators, and precision model engineers all face the same frustration: structural tubing that is either too heavy to fly well or too flexible to hold alignment under load. A carbon fiber square tube solves both problems at once — delivering the rigidity of steel at a fraction of the weight, in a square profile that locks into clamps and connectors without rotating.

Each tube in this listing is a pultruded carbon fiber square tube, 500mm (≈19.7") long, with a gloss black finish. Outer dimensions range from 1.4×1.4mm (≈0.055") up to 12×12mm (≈0.47"), covering micro-model to full-size sport-aircraft applications. Two bore options are available: a Square Hole inner bore for square push rods and anti-rotation inserts, and a Round Hole inner bore for round rods, wiring, and standard round-section components. Order as a single piece or in packs of 2, 3, 5, 8, or 10 to match your project scope.

These carbon fiber square tubes are well suited for RC airplane wing spars and fuselage stringers, lightweight drone frame rails and arm tubes, push rod guides in control linkages, and structural members in architectural scale models and engineering prototypes. Their consistent cross-section and 500mm length make them easy to cut to size or use as-is for standard spar runs.

🔗 Compatibility: Fits standard square tube clamps and frame slots sized to match the selected OD (1.4 / 1.7 / 2 / 2.5 / 3 / 4 / 5 / 6 / 8 / 10 / 12 mm). Choose Square Hole or Round Hole bore to match your insert or linkage type. Verify hardware inner channel dimension before ordering.

✅ Key Features of These Carbon Fiber Square Tubes

  • ⚖️ Low Weight, High Stiffness — Carbon fiber composite construction delivers a stiffness-to-weight ratio that outperforms aluminum tubing of the same cross-section, keeping your RC airplane or drone frame light without sacrificing structural rigidity.
  • 🔲 Dual Bore Options — Square or Round — Choose a square inner bore for anti-rotation push rod guides and square inserts, or a round inner bore for standard round rods and internal wiring runs. Both share the same rigid square outer profile.
  • 📐 Wide OD Range in One Listing — Available from 1.4×1.4mm up to 12×12mm outer dimension, covering micro park-flyer spars through full-size sport-model frame rails — all in a single listing with clear size selection.
  • 📏 500mm Working Length — Each tube ships at a uniform 500mm (≈19.7") length, long enough for most wing spar and fuselage stringer runs, and easy to trim shorter with a rotary tool or fine-tooth saw.
  • 🛡️ Corrosion-Free Epoxy Composite — Carbon fiber and epoxy resin do not rust or oxidize, making these tubes a dependable choice for outdoor RC airplane and drone builds that will see varying humidity and temperature conditions.
  • 📦 Flexible Pack Quantities — Available in 1, 2, 3, 5, 8, and 10-piece options so you can grab a single tube for a repair or stock up for a full multi-model build run at a lower per-piece cost.

📐 Technical Specifications — Carbon Fiber Square Tube

Material Carbon fiber reinforced epoxy composite (pultruded)
Outer Profile Square hollow tube
Finish Gloss black
Length 500mm (≈19.7")
Available OD Sizes 1.4 / 1.7 / 2 / 2.5 / 3 / 4 / 5 / 6 / 8 / 10 / 12 mm
Bore (ID) Options Square Hole or Round Hole — see variant selector for OD × ID pairing
Wall Thickness (typical) Varies by size — typically 0.3mm (1.4mm OD) to 1.25mm (12mm OD); see size label for OD × ID
Quantity Options 1 / 2 / 3 / 5 / 8 / 10 pcs
Tensile Strength Contact us to confirm for load-critical applications
Compatible Hardware Standard square tube clamps and frame connectors matching selected OD
Recommended Applications RC airplane spars, drone frame rails, push rod guides, model structural members, engineering prototypes
⚠️ Note: Always wear a dust mask and eye protection when cutting carbon fiber. Carbon fiber dust is an irritant — sand cut edges smooth after trimming to prevent delamination.

❓ Frequently Asked Questions

How do I choose the right OD and bore size for my project?

Match the outer dimension (OD) to your clamp, frame slot, or mounting hardware opening. The bore (ID) determines the hollow channel — a square bore is generally used for push rods or square inserts, while a round bore suits round rods or internal wiring. All tubes in this listing are 500mm (≈19.7") long. If you need a custom length, contact us before ordering.

Example: a 6×6mm OD tube with a 5mm round bore fits a 6mm square clamp and accepts a 5mm round rod through the center.

What is the difference between the Square Hole and Round Hole options?

The hole type refers to the shape of the inner bore. A Square Hole bore is ideal for inserting square push rods, square carbon inserts, or linkage components that need anti-rotation. A Round Hole bore is suited for round rods, wiring, or standard round-section inserts. The outer profile is square on both options.

How strong are these carbon fiber square tubes?

Carbon fiber composite tubes are generally significantly stiffer and stronger per unit weight than aluminum or fiberglass equivalents. For typical RC airplane spar and drone frame rail applications, these tubes handle the bending and vibration loads encountered in lightweight airframe construction. For load-critical engineering applications, contact us to confirm the specific fiber layup and resin specifications.

Can these tubes be used outdoors or in wet conditions?

Carbon fiber itself does not rust or corrode, and the epoxy resin matrix provides good moisture resistance for typical outdoor RC use. These tubes are suitable for outdoor RC airplane and drone use in normal weather conditions. For prolonged submersion or exposure to harsh chemicals, additional sealing is generally recommended.

Can I cut these 500mm tubes to a shorter length?

Yes. Carbon fiber tubes can generally be cut with a rotary tool fitted with a cutting disc, a fine-tooth saw, or a diamond-coated cutting wheel. Always wear a dust mask and eye protection — carbon fiber dust is an irritant. Sand cut edges smooth after trimming to prevent delamination at the cut face.

Which size should I choose for a typical RC airplane wing spar or drone frame rail?

For micro and park-flyer RC models, the 1.4×1.4mm to 3×3mm sizes are typically sufficient. Mid-size sport models generally use 4×4mm to 6×6mm tubes. Larger or heavier builds often benefit from the 8×8mm to 12×12mm options. Always match the tube OD to the dimension specified in your build plan for best structural results.

Are these tubes compatible with standard RC hardware and frame connectors?

These square carbon fiber tubes are designed to fit standard square tube clamps and frame slots used in RC airplane and drone construction. The outer dimensions (1.4mm through 12mm) correspond to common hardware sizing. Always verify that your clamp or connector's inner channel dimension matches the tube OD you select before ordering.

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

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