3K Carbon Fiber Square Tubes | High Strength Lightweight | DISLAB-CARBON

3K Carbon Fiber Square Tubes

Name: 3K Carbon Fiber Square Tubes
Brand: DISLAB-CARBON
Availability: InStock

Precision-engineered structural components using continuous carbon fiber reinforced polymer (CFRP) technology.

DISLAB‑CARBON’s 3K Carbon Fiber Square Tubes deliver exceptional strength-to-weight ratio, rigidity, and dimensional stability. Made from high-quality 3K carbon fiber with a thermoset resin matrix, these square tubes are designed for structural applications where weight reduction and performance are critical — drones, robotics, aerospace components, and outdoor equipment.

Lead time: 24‑hour quotation, rapid sampling, bulk production with stable delivery. 📄 Custom Molded Tubes & Intake Pipes ✈️ Drone Arm Elbow Pipe 🔘 3K Carbon Fiber Round Tubes

Production & application — 3K carbon fiber square tubes

Core Specifications

Outer Dimension (W × H)	Length	Wall Thickness	Weave Type	Fabric
10 × 10 mm	1000 mm	1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
12 × 12 mm		1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
15 × 15 mm		1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
20 × 20 mm		1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
30 × 30 mm		1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
40 × 40 mm		1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
50 × 50 mm		1 mm	Plain Weave	3K Carbon Fabric
		1 mm	Twill Weave	3K Carbon Fabric
		2 mm	Plain Weave	3K Carbon Fabric
		2 mm	Twill Weave	3K Carbon Fabric
Custom sizes available upon request — contact us for matte twill finish options. Available grades: 1K, 1.5K, 2K, 3K, 6K, 8K, 12K (3K as standard). Mechanical: Tensile strength ≥ 3000 MPa, elastic modulus ≥ 165 GPa, density 1.6–1.65 g/cm³.

Core Advantages

⚡ High Strength-to-Weight Ratio

Carbon fiber composite offers exceptional strength at a fraction of the weight of metal materials, ideal for weight-sensitive applications. Tensile strength ≥3000 MPa (6–12 times that of ordinary steel).

🛡️ Superior Mechanical Properties

Elastic modulus ≥165 GPa ensures structural integrity under heavy loads, combined with high impact and fatigue resistance for demanding environments.

🌊 Corrosion & UV Resistance

The composite withstands harsh environments, resisting corrosion, moisture, and UV degradation — perfect for outdoor, marine, and industrial applications.

🎨 Design Flexibility & Precision

Multiple weave patterns and finishes. Full customization of dimensions, lengths, drilling, notching, and CNC machining to meet exact project requirements.

Superior Material & Surface Finishes

Our 3K carbon fiber square tubes are manufactured using continuous carbon fiber reinforced polymer (CFRP) technology, not just a cosmetic layer. The thermoset resin matrix and continuous fiber construction ensure the highest structural performance. Available in matte or glossy, plain weave or twill weave — the twill weave offers a distinctive herringbone texture with enhanced conformability. Each tube undergoes strict dimensional checks to guarantee consistent wall thickness and straightness.

Beyond the classic 3K, we also supply grades from 1K to 12K, tailoring the fiber tow to balance surface aesthetics and structural demand. For custom applications requiring additional rigidity, optional 6K or 12K fabrics provide heavier structural performance.

Applications & Problem‑Solving

✈️ Drone & Robotics Frames

Multirotor arms, robotic structural frames. Problem solved: Traditional metal frames add excessive weight, reducing flight time and payload. Carbon fiber square tubes cut weight by up to 60%, improving flight efficiency and extending battery life.

🚀 Aerospace & Industrial Components

Lightweight supports, interior components, high-performance parts. High strength requirements + strict weight reduction goals. Carbon fiber’s high specific strength meets both, replacing heavy metal parts without sacrificing performance.

🏕️ Outdoor Sports & Equipment

Tripod legs, fishing rods, bicycle frames, wheelchair components. Aluminum and steel add unnecessary bulk. These square tubes are lightweight yet durable, offering corrosion resistance for humid or coastal environments.

⚕️ Medical & New Energy Equipment

Medical device frames, new energy structural parts, high-end construction components. Need for non‑magnetic, corrosion‑resistant, lightweight materials. Carbon fiber provides excellent structural stability and performance.

Precision CNC Machining & Customization

Our in-house CNC machining services allow us to deliver finished components exactly to your blueprint: drilling cross-holes, slots, custom notching, and cut-to-size lengths. We use diamond‑tipped tools and specialized processes to prevent delamination and ensure burr‑free edges. Whether you need prototype sampling or bulk production, every tube is machined with tight tolerances. The custom-machined square tubes shown here are ready-to-assemble for drone arms, robotics brackets, and industrial structures.

Secondary processing includes hole drilling, milling, and even complex 360° machining for intricate geometries. Supported by 18+ years of carbon fiber manufacturing experience, we ensure reliable lead times and consistent quality across custom and bulk orders.

📦 Real Customer Case: Bulk Order for a Drone Frame Manufacturer

A leading agricultural drone manufacturer in eastern China placed a custom order with DISLAB‑CARBON for 1,000 pieces of 20×20×1.5mm 3K carbon fiber square tubes. The tubes were intended as structural arms for their new 20L payload crop‑spraying drone line, requiring high rigidity and light weight.

Our engineering team collaborated with the client to refine dimensions and weave pattern, conducting load tests at 120% of rated payload. The 3K carbon fiber construction reduced weight per arm by 60% compared to the original aluminum design, while maintaining structural rigidity. Tubes were delivered within 28 days with consistent dimensional accuracy and surface finish. The manufacturer reported improved flight efficiency and zero structural failures during field trials — leading to a follow‑up order for additional sizes.

Versatile Dimensions & Stock availability

From 10×10mm up to 50×50mm outer dimensions, with wall thicknesses of 1mm or 2mm as standard. Our continuous carbon fiber production enables tight dimensional stability with custom lengths up to 1000mm and longer upon request. The assortment shown highlights the range of profiles we can supply — each exhibiting the signature 3K weave. For special requirements, we can produce non‑standard outer/inner dimensions, different wall thicknesses, or even rectangular profiles.

Our global shipping and fast sampling service (24‑hour quotation, rapid prototyping) make us a trusted partner for both small R&D projects and high‑volume OEM/ODM production. All tubes are UV‑resistant and suitable for outdoor use, with optional clear protective coating for prolonged sun exposure.

Frequently Asked Questions

Q: What is the difference between 3K, 6K, and 12K carbon fiber?

A: “K” refers to the number of carbon filaments per tow. 3K has 3,000 filaments, offering finer weave and smoother surface, ideal for cosmetic applications. 6K and 12K have larger tows, used in heavier structural applications where appearance is less critical.

Q: Can these carbon fiber square tubes be cut or modified on-site?

A: Yes, they can be cut, drilled, or machined using standard tools. We recommend diamond‑tipped tools for clean cuts and deburring edges to prevent delamination. We also offer pre‑cutting and CNC machining services to your specifications.

Q: Are these carbon fiber tubes suitable for outdoor use?

A: Yes, the composite material is UV‑resistant and corrosion‑resistant, making it suitable for outdoor applications. For prolonged exposure, we recommend a clear protective coating to maintain the finish.

Q: What kind of surface finishes are available?

A: Matte and glossy finishes in both plain weave and twill weave patterns. Custom colors are also available for aesthetic applications.

Q: How are these tubes different from “fake carbon fiber” products?

A: Our tubes are made with continuous carbon fiber reinforced polymer (real CFRP), not just a carbon fiber coating. The resin matrix and continuous fiber construction ensure the high strength, rigidity and durability of the composite material.

DISLAB‑CARBON — Your Trusted Global Supplier of High‑Performance Carbon Fiber Components

Backed by a factory with 18+ years of experience in carbon fiber production. Full OEM/ODM support, custom cutting, drilling, and surface finishes. High quality | Global shipping | Custom drawing support

📧 [email protected] | 🌐 dislabcarbon.com.cn