Product Overview

Nanjing Bai Gang Composite Materials Co., Ltd. introduces carbon fiber tubes (carbon cylinders) made from advanced carbon fiber reinforced resin matrix composite materials, formed through a single-step process of fiber winding and rolling. Serving as the core blank tube for carbon fiber drive shafts and guide rollers, it not only can replace traditional steel and aluminum metal cylinders but also can be used independently as lightweight tube structural components, widely applied in industrial transmission, energy equipment, textile machinery, and other fields. Its unique material properties and process advantages make it an ideal choice for the lightweight and high-performance upgrading of modern industry.

Main Product Features

Significant lightweighting with flexible and controllable weight reduction effects.

Carbon fiber tubes have a significant lightweight advantage compared to traditional metal tubes. Under the same outer diameter and torque-bearing conditions, they can reduce the weight by 40%-65% compared to ordinary steel pipes; the typical weight reduction range reaches 50%-60% when the wall thickness is similar. The weight reduction ratio is not a fixed value but dynamically adjusted based on the tube diameter, wall thickness, and steel grade, meeting the customized needs of different working conditions. The lightweight design directly reduces the rotational inertia, resulting in less power loss during high-speed rotation, thereby improving the energy efficiency of the equipment.

2. Combines rigidity and durability, stable operation under complex conditions

Tubular materials exhibit excellent torsional and bending rigidity, effectively resisting deflection deformation to ensure transmission accuracy; they have outstanding fatigue resistance, capable of withstanding long-term high-frequency load cycles; strong corrosion resistance allows stable performance in humid, outdoor, and other harsh environments, extending service life. Their damping characteristics are 10 times that of steel, efficiently absorbing vibrations and reducing noise during operation to optimize the equipment operating environment.

3. Precise performance adjustment, compatible with diverse needs

By adjusting the angle of carbon fiber layup and the number of layers, the production stage can accurately control key parameters such as the tube's torsional strength and hoop rigidity, flexibly adapting to different torques, speeds, and large-span transmission conditions. This customization capability makes carbon fiber tubes the preferred solution for high-performance structural components across industries.

4. Flexible specification customization, convenient and efficient assembly

Single straight pipe standard molding length ≤ 6 meters, supporting flange connection assembly, the total length can reach up to 10 meters, meeting the length requirements of large equipment for pipes. The diameter can be customized from Φ40mm to Φ600mm, covering mainstream size requirements in the industrial field. All finished products are strictly tested before shipment to ensure performance meets standards and delivery quality is reliable.

Product Detailed Parameters

Basic Parameters

• BrandNanjing Bai Gang Composite Materials Co., Ltd.
• Place of OriginNanjing, China
• Product ModelCustomized according to customer requirements (supports diameter, length, and performance parameter customization)
• MaterialCarbon fiber reinforced resin matrix composite (core components: carbon fiber, high-performance resin)
• Molding TechnologyFiber winding and rolling integrated molding

Physical Properties

• Weight reduction ratioUnder the same outer diameter and torque conditions, compared with ordinary steel pipes, weight reduction is up to 40%-65%; typical weight reduction is 50%-60% when wall thicknesses are similar.
• Anti-torsion rigidityThrough layer angle optimization, high-torque bearing requirements can be achieved.
• Circular rigidityAdjustable fiber layers, suitable for various pressure environments.
• Damping coefficientVibration absorption effect is significantly improved by a factor of 10 compared to steel.
• Corrosion resistanceThe resin matrix provides chemical protection, suitable for environments such as humidity and salt mist.

Specification parameters

• Diameter rangeΦ40mm-Φ600mm (Custom sizes available)
• Single length≤6 meters (standard); total assembly length ≤10 meters
• Wall thickness controlAccurately adjust according to performance requirements to ensure a balance between lightweight and strength

Custom Options

• Lamination Angle: 0°, ±45°, 90° and multiple angles for optimized torsional/bending resistance performance.
• Number of fiber layers: Precisely adjust the rigidity index according to load requirements.
• Surface Treatment: Available in sandblasting, polishing, or coating, to cater to various assembly and aesthetic requirements.

Application Scope

Carbon fiber tubes, with their lightweight and high-performance characteristics, have become an ideal substitute solution for core components in multiple industries, with main application scenarios including:

• Cooling tower fan drive shaft housingReplace traditional steel shafts to reduce the startup load of the fan, improve energy efficiency, and extend the bearing service life.
• Wind turbine equipment connecting shaft blank tubeReduce the weight of the blade-hub connection components, enhance wind energy conversion efficiency, and adapt to the high-corrosive marine environment.
• Textile machinery guide rollerTubular sectionReduce inertial force during high-speed operation, minimize yarn tension fluctuations, and improve fabric quality.
• Base material for paper rollerMoisture-resistant, anti-deformation, ensuring uniform paper thickness, reducing downtime for maintenance.
• Industrial lightweight rotatable structural componentsApplications such as robot arms, automated conveyors, aerospace testing equipment, etc., requiring low vibration and long lifespan.

Frequently Asked Questions (FAQ)

Q1: Can carbon fiber tubes be repaired after cracking?

Carbon fiber tubes are integral composite components, and once cracked or damaged, they cannot be restored to their performance through local repairs and require a complete replacement. Therefore, they are more suitable for industrial projects with strict requirements for low vibration, lightweight, and long lifespan. It is recommended to avoid overloading or impacts during use.

Q2: How to choose the appropriate pipe specification?

A: Parameters need to be determined according to specific working conditions.
Torque requirement: Increase the number of fiber layers or optimize the laying angle in high-torque scenarios.
Span and Speed: Increase circumferential rigidity for large span or high-speed rotation.
- Environmental conditions: Choose weather-resistant resin matrix for humid or corrosive environments.
Nanjing Bai Gang offers free technical consultation and can assist customers in selecting specifications.

Q3: How long does the lifespan of carbon fiber tubes last?

A: Lifespan depends on operating conditions and maintenance. Under normal load and non-corrosive environments, the design lifespan of carbon fiber tubes typically exceeds 10 years, much longer than that of traditional metal pipes. Regular inspection of surface damage and connection status can further extend the service life.

Q4: How long is the production cycle for custom tubing?

A: Standard specifications (diameter ≤ 300mm, length ≤ 3 meters) have a production cycle of 7-15 working days; non-standard large-size or complex performance requirements for pipes require 20-30 working days. The specific cycle is subject to the contract agreement. Nanjing Bai Gang promises to prioritize the delivery of urgent orders.

Q5: Can carbon fiber tubes replace aluminum alloy tubes?

In applications requiring higher rigidity, corrosion resistance, or vibration control, carbon fiber tubes can replace aluminum alloy tubes. They offer a more significant weight reduction (aluminum alloy density is 2.7g/cm³, while carbon fiber tube density is about 1.6g/cm³), but at a higher cost. It is recommended to make a comprehensive decision based on the project budget and performance requirements.

Q6: How to store unused carbon fiber tubes?

A: Should be stored in a dry, shaded, and ventilated indoor environment, avoiding long-term exposure to ultraviolet light or high temperatures (>60℃). The ends of the pipe materials must be sealed with protective covers to prevent dust or moisture from entering. Under proper storage conditions, the material properties can remain unchanged for more than 5 years.

Q7: Are carbon fiber tubes conductive?

A: Carbon fiber itself is conductive, but the resin matrix is an insulating material. The overall conductivity of the tube material depends on the carbon fiber content and surface treatment process. For insulating applications, an insulating coating can be applied to the surface of the tube or a sleeve can be used for isolation.

Q8: Does Nanjing Baiport provide installation guidance?

A: Yes. We provide customers with detailed installation manuals and video tutorials, and can dispatch technical personnel to the site for guidance on critical processes (such as flange alignment, dynamic balance adjustment). For large-scale projects, we can also offer turnkey engineering services to ensure smooth operation of the equipment.

Q9: What is the recycling value of carbon fiber tubes?

A: Carbon fiber composite recycling technology has gradually matured. Nanjing Baiport cooperates with professional recycling agencies to provide post-service recycling for clients, extracting carbon fibers through pyrolysis or chemical treatment, achieving resource recycling and reducing the total lifecycle cost.

Q10: How to contact Nanjing Bai Port for a quotation?

A: You can contact us in the following ways:
- Online consultation on official website: www.example.com (sample link)
- Phone: 400-XXX-XXXX (example number)
- Email: sales@example.com (Example Email)
Please provide specific requirements (such as specifications, quantity, application scenarios), and we will respond within 24 hours with a detailed quotation.