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Carbon fiber tubes manufacturing at Flex Precision Composites
Dongguan, Guangdong · Est. 2012

Precision Carbon Fiber
Engineered to ±0.05mm

B2B manufacturer of precision carbon fiber assemblies with custom CNC aluminum integration for robotics, industrial automation, and UAV structural applications. Toray T700 & T800 grade materials.

±0.05mmTolerance
T700/T800Toray Grade
7075-T6Al Alloy
48hrSample Lead Time
ISO 9001Certified
Product Lines

Precision-Machined Carbon Fiber Solutions

Each assembly is engineered for structural performance, dimensional accuracy, and seamless integration with CNC-machined metal components.

01

Robotic Arm Links

Precision carbon fiber structural links for 6-axis and collaborative robots. Combines high stiffness-to-weight with CNC 7075-T6 aluminum end fittings for bolt-on integration.

  • Toray T700 / T800 carbon fiber
  • ±0.05mm dimensional tolerance
  • 7075-T6 aluminum end fittings
  • Custom cross-sections available
  • Fatigue life >10⁷ cycles
02

Industrial Idler Rollers

High-speed carbon fiber rollers for printing, packaging, and web-handling lines. 60–80% lighter than steel; reduces drive motor load and extends bearing life.

  • Diameters 25mm – 300mm
  • Surface runout <0.03mm TIR
  • Operating speed up to 6,000 RPM
  • Custom surface coatings available
  • Static balance standard
03

UAV Structural Spars

Wing spars and booms for fixed-wing UAVs and multi-rotor frames. Optimized layup schedules via Classical Laminate Theory (CLT) for maximum stiffness at minimum weight.

  • Toray T800 ultra-high modulus CF
  • Custom wall thickness from 0.6mm
  • Bi-directional & quasi-isotropic layups
  • Post-cure machined for flatness
  • Density 1.55 g/cm³
04

CNC Carbon Fiber Plates

Flat and contoured CFRP plates, machined to net shape with routed pockets, drilled holes, and counter-bores. Ideal for structural brackets and chassis panels.

  • Thickness 1mm – 30mm
  • Tolerances to ±0.02mm milled
  • No delamination at edges
  • Anti-static coating option
  • Batch sizes from 5 pcs
05

CF/Al Hybrid Assemblies

Multi-material assemblies joining CFRP tubes or plates with precision CNC-machined aluminum 7075-T6 brackets using aerospace-grade adhesive bonding and mechanical fastening.

  • Adhesive: Loctite EA 9361 or equiv.
  • Insert-threaded ends available
  • NDE inspection on request
  • Anodized / hard-anodized finish
  • Assembly drawings provided
06

Custom OEM Components

Full design-to-delivery service for specialized carbon fiber components. From DFM review through tooling, lay-up, cure, and CNC finishing — one source of supply.

  • DFM consultation included
  • Dedicated tooling investment
  • First Article Inspection (FAI)
  • PPAP documentation available
  • MOQ 10 pcs for specials
12+
Years Manufacturing
300+
OEM Clients Served
±0.05mm
Maintained Tolerance
48hr
Sample Lead Time
ISO 9001:2015
Precision carbon fiber tube manufacturing facility at Flex Precision Composites, Dongguan
60%
Weight reduction vs. aluminum on equivalent sections
Manufacturing Capabilities

End-to-End Precision From Prepreg to Finished Assembly

Our vertically integrated facility in Dongguan covers filament winding, autoclave/oven curing, 5-axis CNC machining, and quality inspection — eliminating handoff risk and compressing lead times.

  • Filament Winding & Autoclave Cure

    CNC-controlled winding with fiber placement angle ±0.5°. Autoclave cure at 135°C for Vf >62% and near-zero porosity.

  • 5-Axis CNC Machining

    DMG Mori 5-axis machining centres. Tolerances to ±0.02mm. PCD (polycrystalline diamond) tooling avoids delamination on all cut edges.

  • CMM Dimensional Inspection

    Zeiss Contura CMM with CALYPSO software. 100% inspection on critical dimensions; statistical process control (SPC) on production runs.

  • Adhesive Bonding & Assembly

    Controlled-environment bonding room. Fixtures ensure ±0.1mm alignment of CF-to-metal joints. Peel and lap-shear testing on each batch.

Material Science

Advanced Materials for Demanding Applications

We source from Toray (Japan), SGL Carbon (Germany), and HEXCEL (USA) — providing traceability and consistent mechanical properties for every production run.

Primary CF

Toray T700S

Standard-modulus carbon fiber. Best balance of tensile strength, stiffness, and cost for structural assemblies.

Tensile Strength4,900 MPa
Tensile Modulus230 GPa
Density1.80 g/cm³
High-Mod CF

Toray T800H

Intermediate-modulus fiber. Preferred for UAV spars and robotic links demanding high stiffness-to-weight.

Tensile Strength5,490 MPa
Tensile Modulus294 GPa
Density1.81 g/cm³
Al Alloy

7075-T6 Aluminum

Aerospace-grade aluminum for CNC-machined end fittings, flanges, and inserts. Anodized for corrosion resistance.

Tensile Strength572 MPa
Yield Strength503 MPa
Density2.81 g/cm³
Resin System

Epoxy Prepreg

Toray E250 / Hexcel 8552 epoxy resin systems. Tg >190°C for post-cure stability in high-temperature operating environments.

Cure Temperature135 °C
Glass Transition Tg>190 °C
Fibre Volume Fraction>62%
Our Process

From Drawing to Delivered Part

A structured 5-stage manufacturing workflow ensures quality is built in at every step, not inspected in at the end.

01

DFM Review

We analyze your drawing for carbon fiber-specific design-for-manufacture issues: fiber orientation, wall thickness, tooling radius, and insert geometry.

02

Tooling & Layup

Mandrel or cavity tooling fabricated in-house. Prepreg layers cut and placed to engineered fiber angle schedules using CLT-optimized laminate design.

03

Autoclave Cure

Vacuum-bagged parts cured at controlled pressure (6 bar) and temperature (135°C). Post-cure free-stand cycles improve Tg and dimensional stability.

04

CNC Machining

5-axis machining with PCD tooling. Adaptive feed-rate control prevents delamination. All critical features verified against first article inspection plan.

05

Inspection & Ship

CMM inspection, visual and dimensional checks. Conformance data package included. Parts packed in custom foam for zero-damage transit.

Engineering Insights

Technical Resources for Design Engineers

Practical guidance on designing carbon fiber assemblies for performance, manufacturability, and long-term reliability.

Industry Insight

CNC Machining of Carbon Fiber Honeycomb Sandwich Panels for UAV Wings: Core Crush Prevention Strategies

Learn how to prevent core crush when CNC machining carbon fiber honeycomb sandwich panels for UAV wings. Includes worked example, material data, and industry standards.

2026-05-05 8 min read
Application Case Study

Case Study: Using CFRP Tubes in a Delta Robot to Achieve 0.1mm Repeatability at 200 Cycles per Minute

Case study: Using CFRP tubes in a delta robot to achieve 0.1mm repeatability at 200 cycles per minute. Material selection, stiffness analysis, and damping benefits for high-speed pick-and-place.

2026-05-04 7 min read
Technical Guide

Adhesive Bonding of CFRP to Stainless Steel in Food-Grade Automation: Surface Treatment and Testing

Learn how to achieve strong adhesive bonding of CFRP to stainless steel for food-grade automation. Includes surface treatment methods, ASTM D1002 lap shear testing, and a worked numerical example with Toray T700S and 304 SS.

2026-05-03 9 min read
Get In Touch

Request a Quotation or Technical Consultation

Send us your drawings, specifications, or rough requirements. Our engineering team will review and respond within 24 hours with a technical feasibility note and indicative pricing.

Phone / WhatsApp+86 130 2680 2289
Emailleo@flexcompositeeng.com
LocationDongguan, Guangdong Province, China
Response TimeWithin 24 hours (Mon–Sat)

Request for Quotation

Fill in your requirements and we'll respond within 24 hours.

We reply within 24 hours · All enquiries are confidential

WhatsApp
+86 130-2680-2289
Email
leo@flexcompositeeng.com
Phone
+86 130-2680-2289