3K Bi-directional Plain Weave Carbon Fiber Fabric

This bidirectional plain-weave carbon fabric is woven from 3K filaments, offering balanced strength in both warp and weft directions, a smooth and dense surface, and a stable structure. Compared to fabrics made from coarser 6K or 12K filaments, the 3K weave yields a finer, more refined surface finish, making it ideal for visible aesthetic components and precision parts.

The bidirectional plain weave ensures balanced load distribution across both axes, eliminating the structural weak points found in unidirectional fabrics. It boasts a tensile strength of 3650 MPa (warp) and 3620 MPa (weft), an interlaminar shear strength of 92 MPa, and rapid resin impregnation (requiring only 12 seconds), facilitating quick, bubble-free infusion. The material withstands over 5,000 bending cycles without fiber breakage or delamination. It offers excellent corrosion resistance, fatigue resistance, and lightweight properties—weighing only one-fifth of steel for equivalent strength.

Standard specifications include 200g and 240g variants, with custom options ranging from 160g to 400g; the standard width is 100cm, with slitting services available. Applications include drone frames, automotive components, sports equipment, precision molds, and lightweight structural parts. Factory-direct supply; full CNAS test reports and ISO/RoHS certifications are provided.

Introduction to 3K Bi-directional Plain Weave Carbon Fiber Fabric

A. Product process principle

3K represents that each bundle of carbon fiber raw fibers contains 3000 single fibers. The bidirectional plain weave adopts a staggered weaving structure of warp and weft yarns, making it the most widely used and well-balanced carbon fiber fabric on the market. The fibers are evenly distributed in both latitude and longitude directions, with no significant deviation in mechanical properties.

The fabric surface is smooth and even, with uniform pores. The resin infiltration speed is stable, and there are no obvious raised patterns on the surface of the finished product after molding. The difficulty of polishing, painting, and coating operations is low.

Compared to twill and satin carbon fabrics, plain weave structures have stronger stability, balanced tensile and tear resistance, and are less prone to local stress cracking; Compared to 6K and 12K coarse wire carbon cloth, 3K fiber is finer and has a higher surface finish for molded workpieces, making it suitable for the production of exterior parts, high-precision molds, and small lightweight components.

The product is resistant to acid and alkali corrosion, high temperature, and aging. It will not have problems of metal corrosion, plastic aging and deformation after long-term use. It has outstanding advantages in lightweight. Its weight is only 1/5 of steel under the same strength.

B. Core application scenarios

1. Traffic modification: Car carbon fiber hood, interior panel, wheel hub cover, motorcycle shell, lightweight frame wrapping for electric vehicles

2. Aviation model: drone fuselage, model wings, aircraft frame, small aviation experimental composite components

3. Outdoor sports: Carbon fiber rackets, bicycle frames, surfboards, skis, fishing rods, high-strength substrates

4. Industrial molds: composite material replica molds, fixtures, corrosion-resistant and anti-corrosion equipment liners, precision testing fixtures

5. Lightweight appearance structural components such as medical equipment, high-end instrument casings, and high-end wrapping for handicrafts

Product Specification Table

Third party measured performance data

Junteng sends every batch of 3K Bi-directional Plain Weave Carbon Fiber Fabric to a third-party material testing agency for mechanical testing. A complete testing report is attached and shipped with the goods. The core testing data is as follows:

1. Bidirectional tensile balance: The difference in warp and weft tensile forces is≤1.2%, and there is no problem of weak unidirectional force. The formed workpiece is not easily deformed;

2. Actual measurement of interlayer shear strength: 92MPa, no delamination after multi-layer overlay composite, excellent bonding stability;

3. Corrosion resistance test: After soaking in acidic and alkaline solution for 720 hours, the strength attenuation is less than 3%, and the anti-corrosion performance far exceeds that of fiberglass cloth;

4. Fatigue cycle test: After 5000 cycles of reciprocating bending, the fabric surface is not broken and the fibers are not drawn, making it suitable for frequently stressed sports equipment;

5. Wetting performance test: It only takes 12 seconds for epoxy resin to fully wet at room temperature, with high processing efficiency and reduced air bubbles and missing glue defects.

Explanation of Level 1 Qualification Certification Documents

As a legitimate supplier of carbon fiber materials for import and export, Junteng has a complete set of first level qualifications and can provide scanned copies of all qualifications for customer customs clearance, factory audit, and project bidding

1. Enterprise import and export rights filing certificate, customs self declaration qualification;

2. Third party mechanical property testing report and ROHS environmental protection testing certification for carbon fiber materials;

3. ISO9001 quality management system certification, industrial composite material safety production license;

4. Export specific inspection data, certificate of origin, and complete set of customs declaration templates (free assistance to customers for customs declaration);

5. Raw material factory material list, flame retardant and low halogen special testing report (supporting high-end export orders). All qualification documents are available in both Chinese and English, ensuring smooth customs clearance for overseas customers and reducing the risk of customs detention and missing information.

JUNTENG Procurement's one-stop supporting service advantages

1. Comprehensive product consultation: Pre sales engineers provide free process solutions, recommend weight and width based on customer product usage, and send free samples for testing; We provide a complete set of technical guidance for novice customers on resin ratio, layering process, and curing operation, and answer questions online at any time.

2. Convenient foreign trade customs clearance support: The company has its own customs clearance docking team, which can handle the full set of customs clearance documents for both full container and bulk exports. The certificate of origin, invoice and packing list are unified and organized, without the need for customers to connect with third-party customs clearance companies, simplifying the export process and shortening the shipping cycle.

3. Flexible customized processing services: supporting whole roll shipment, strip cutting, pre soaking processing, film moisture-proof treatment, synchronously accepting small batch sample orders and large batch industrial orders, with low minimum order threshold.

4. Storage and spot guarantee: With a year-round inventory of thousands of rolls, regular specifications can be shipped within 48 hours, and urgent orders can be prioritized for expedited delivery.

Brand Introduction

Junteng has been deeply involved in the carbon fiber composite materials industry for many years, focusing on the research and development of various carbon fiber fabrics, pre impregnated materials, and supporting materials, as well as spot supply. It is a full chain professional supplier that integrates material selection, sample testing, customized processing, foreign trade customs declaration, and technical after-sales service.

Our company has complete first level import and export qualifications, a complete set of customs filing, quality inspection certification, and enterprise production license documents, and is connected to thousands of composite material processing factories, automobile modification factories, aviation model enterprises, and sports equipment manufacturers at home and abroad.

Junteng has its own standardized warehousing and cutting workshop, with dozens of tons of 3K double-sided plain weave carbon fiber cloth in stock, without the need for lengthy order scheduling; Equipped with a team of professional technical engineers, customers can enjoy one-on-one one-stop services from material selection, thickness and weight matching, molding process consultation, to order production, customs declaration and export, logistics and distribution. We also handle the full set of customs clearance documents for overseas customers, simplify and streamline the customs clearance process, and significantly reduce the time and cost of foreign trade procurement.

After sales guarantee, warranty and complete service description

A. Product Warranty Policy

1. Material warranty: The factory carbon cloth is free of defects such as broken wires, skipped wires, oil stains, and excessive weft deviation. If there are any quality problems with the fabric surface upon arrival, photos will be taken for verification and free replacement or exchange will be provided;

2. Size warranty: The length and width error of the cut product is controlled within±0.5cm, and if the size deviation exceeds the standard, the full amount will be free of reshipment;

3. Raw material warranty: All 3K raw silk comes with a material certificate. If inferior or low-strength silk is mixed, the order will be fully compensated.

B. Full process worry free after-sales system

1. 7-day quality objection period for receiving goods: Within 7 days of receiving the goods, if the customer discovers weaving defects, substandard weight, or moisture damage, they can contact the after-sales service for handling;

2. Exclusive after-sales specialist for foreign trade orders: For overseas customers with logistics damage or customs clearance information questions, a dedicated person is available 24/7 online to assist in handling logistics claims;

3. Lifetime technical support: Regardless of whether it is a repurchase or not, customers can consult engineers for free regarding subsequent molding processes and material matching issues;

4. Moisture proof packaging: All carbon cloth is sealed with waterproof PE film and hard paper tube, making it less prone to moisture and delamination during long-distance sea transportation, reducing transportation losses.

Real-World Application Cases

Case 1: School Building Seismic Retrofit—Sichuan Province

A 4-story reinforced concrete school building, originally constructed in the 1990s, required seismic upgrading to meet new building codes. The structural assessment identified insufficient shear strength in beam-column joints and inadequate ductility in the concrete frames. Our 3K bidirectional plain weave carbon fabric was applied to:

Beam-column joint zones—wrapping with 200g plain weave fabric to enhance shear capacity

Column bases—seismic jacketing to improve ductility and prevent brittle failure

Curved architectural elements—tight conformability ensured void-free bonding on non-standard geometries

Outcome: After retrofitting, the building achieved a seismic performance exceeding the design code requirements for the region. The school resumed classes without structural interruption, and the thin carbon reinforcement layer added no significant weight to the original structure.

Case 2: Hospital Structural Reinforcement—Coastal City

A 6-story hospital building in a high-seismic zone required reinforcement without disrupting daily medical operations. Our 3K bidirectional plain weave carbon fabric was selected for its lightweight installation and rapid curing characteristics:

80+ beam-column joints reinforced with 200g plain weave fabric

Curved shear wall corners reinforced with custom-cut carbon patches

Night-shift construction minimized impact on hospital services

Outcome: All reinforced components passed third-party seismic shear tests with a 35% increase in load capacity. The project was completed 15 days ahead of schedule, and the hospital maintained full operation throughout the retrofit.

Frequently Asked Questions

Q1: How to choose 3K Bi-directional Plain Weave Carbon Fiber Fabric and twill carbon fabric?

A: Pursuing workpiece flatness, structural stability, and low-cost mass production, choosing 3K plain weave; For a stronger surface gloss and visual effect of texture, choose diagonal stripes. Plain weave bidirectional force balance, structural components are recommended first.

Q2: Are the customs declaration documents for exporting overseas expensive and do I need to handle them myself?

A: Junteng is a first tier import and export supplier, and the complete set of customs clearance documents is provided free of charge. Professional personnel assist in organizing the documents, and customers only need to provide basic order information without additional payment to find customs clearance agents.

Q3: Can we provide a small sample for testing? Is the sample charged?

A: Support for sending small samples of 1㎡and 5㎡. Basic material fees will be charged for regular specification samples. After placing an official order, the sample fee can be deducted from the payment. Engineers will provide reference instructions for the matching molding process.

Q4: What conditions are required for storing carbon cloth, and is it prone to moisture damage?

A: Unopened sealed packaging can be stored in a cool and dry place. It is recommended to use it up within a week after opening. Long term storage can be paired with moisture-proof bags, as the resin infiltration effect will decrease and affect the strength of the finished product.

Q5: Is there a tiered discount for bulk purchases, and how long is the delivery cycle?

A: Set up tiered discounts for bulk purchases of whole rolls and full containers. Standard spot specifications can be shipped within 48 hours, while customized weight and door width orders can be delivered within 7-10 working days. For foreign trade orders, towing and customs clearance can be arranged simultaneously.

Q6: Can the environmental standards of the product meet the export requirements of Europe and America?

A: All 3K carbon cloth in stock comes with ROHS environmental testing report, no harmful heavy metals, meets EU and North American import environmental standards, and has no environmental barriers during customs clearance.

JUN TENG specializes in supplying high-quality 3K Bi-directional Plain Weave Carbon Fiber Fabric, relying on years of industry supply experience, complete first level import and export qualifications, comprehensive one-stop consulting and customs clearance services, and long-term quality assurance and after-sales service, while also meeting the needs of domestic industrial procurement and cross-border foreign trade exports. The stock specifications are complete, supporting personalized cutting and customization. The third-party measured mechanical data is transparent and traceable, and the full set of qualification reports comes with the goods.

If you need sample testing, specification selection, and full container export quotation, you can contact our online technical consultant at any time to follow up on the entire procurement process one-on-one, truly achieving worry free procurement, convenient customs clearance, and worry free after-sales service.