Direct supply and customized industrial engineering solutions from the core of Jiujiang's high-tech manufacturing hub.
Founded in 2015 and strategically located in Jiujiang, Jiangxi Province, China Beihai is a high-tech enterprise dedicated to the research, development, production, and international distribution of continuous basalt fiber. Combining modern pool-kiln drawing technology with premium, raw volcanic rock, we lead the domestic industry in continuous basalt fiber production and industrial-grade equipment manufacturing.
Our facility occupies an advanced industrial footprint, supplying high-performance structural systems, fire barriers, and reinforcement solutions to key global projects across the Americas, Europe, and the Asia-Pacific region.
Three core structural advantages that distinguish China Beihai Group in the international basalt continuous fiber landscape.
We specialize in manufacturing high-performance continuous basalt fiber solutions: from customized sleeves and tapes to unidirectional fabrics, needle felts, structural rebar, pultrusion rovings, and specialized surface tissue mats. Every batch is rigorously certified to ensure mechanical uniformity.
By processing raw volcanic rock through continuous high-temperature melting at 1450°C, we draw exceptionally resilient filaments. We engineer fire barriers and high-performance basalt sleeves/tapes that outperform traditional E-Glass and carbon fibers in acidic, alkaline, and high-temp operations.
China Beihai delivers integrated production, direct-to-factory pricing, and robust custom capabilities. Our proprietary sizing agents and advanced braiding systems provide reliable batch-to-batch consistency. Partnering with us grants access to certified engineering expertise and professional support.
Continuous basalt fiber is a single-component inorganic material extruded from molten natural basalt rock at extremely high temperatures. Unlike glass fiber composites, basalt fibers do not contain toxic chemical additives or heavy metal stabilizers. This clean composition gives them unmatched thermal stability, exceptional chemical resistance, and superb dielectric performance.
Braided basalt sleeves and woven basalt tapes are specifically engineered as structural wraps and high-temperature thermal barriers. Braided sleeves expand and contract slightly to snugly fit over uneven pipes, cables, and battery cells. Woven tapes offer high-tensile structural edge wrapping and electrical insulation, providing reliable flame barriers for extreme industrial applications.
| Property Indicator | Continuous Basalt Fiber | E-Glass Fiber | Carbon Fiber (Standard) |
|---|---|---|---|
| Operating Temperature Range | -260°C to +700°C (-436°F to +1292°F) | -60°C to +450°C (-76°F to +842°F) | -50°C to +400°C (In ambient oxygen) |
| Softening/Melting Point | 1050°C / 1450°C | 840°C / 1200°C | Does not melt (Oxidizes above 400°C) |
| Tensile Strength (MPa) | 3000 - 4800 MPa | 2400 - 3400 MPa | 3500 - 4900 MPa |
| Acid Resistance (10% HCl loss %) | < 2.5% weight loss | > 35% weight loss | Highly Inert |
| Alkali Resistance (10% NaOH loss) | < 5.0% weight loss | > 40% weight loss | Excellent |
| Thermal Conductivity (W/m·K) | 0.031 - 0.038 (Low heat transfer) | 0.040 - 0.052 | 1.5 - 5.0 (High heat transfer) |
E-glass fibers are susceptible to severe alkaline attacks in concrete environments, and carbon fibers can rapidly transfer heat and electricity, increasing the risk of short-circuits. Basalt sleeves and tapes address these limitations. They act as natural insulators that remain highly stable when exposed to alkaline environments and corrosive industrial fluids. This unique balance makes them ideal for modern electric vehicle (EV) battery systems, chemical process piping, and offshore engineering.
China’s domestic basalt fiber manufacturing ecosystem offers unique structural advantages:
At China Beihai, we run advanced quality control programs covering raw material testing, high-temperature thermal checks, and optical filament measurements. Our advanced facility in Jiujiang guarantees structural reliability and steady supplies for major international infrastructure projects.
Providing reliable thermal insulation and structural reinforcement across critical modern industries.
B2B procurement of basalt sleeves and tapes requires deep technical validation. Industrial buyers must match mechanical, thermal, and chemical requirements to their specific applications rather than relying solely on cost-per-meter.
Basalt sleeves are primarily produced using tubular braided systems. Standard angles range from 30° to 60°. A 45° braid angle provides balanced expansion characteristics and high axial strength. For tapes, plain weaves offer reliable dimensional stability for flat wrapping, while twill weaves conform easily to complex curves and irregular geometries.
While raw basalt fiber withstands up to 700°C, applying specialized coatings enhances its performance in demanding environments:
High-performance basalt sleeves and tapes are priced based on the following key metrics:
A leading global electric vehicle manufacturer required a lightweight, non-conductive flame barrier to wrap inter-cell battery links. Traditional E-Glass sleeves experienced structural failure above 500°C under thermal runaway conditions, leading to cell-to-cell propagation.
Solution: China Beihai engineered a custom-diameter, vermiculite-coated basalt fiber braided sleeve. During testing, the basalt sleeve successfully contained temperatures exceeding 900°C for over 15 minutes, preventing thermal runaway propagation and ensuring compliance with strict automotive safety certifications.
An offshore oil terminal in Southeast Asia experienced severe structural corrosion on steel-reinforced marine piles due to saltwater exposure. Traditional concrete jackets cracked and degraded within three years of installation.
Solution: The engineering team wrapped the concrete structures using China Beihai’s alkali-resistant basalt fiber mesh and custom woven tapes saturated with marine-grade epoxy resins. Ten-year structural evaluations showed zero salt penetration and no delamination, significantly reducing long-term maintenance costs.
Precision-manufactured materials designed for exceptional thermal, chemical, and mechanical performance.
Engineered thin surfacing tissue mats designed for resin-rich FRP laminates, providing a smooth finish and excellent corrosion protection.
Designed for concrete plastering, exterior thermal insulation systems, and wall reinforcements, outperforming traditional mesh in alkaline environments.
Mechanically bonded continuous basalt fibers without chemical binders, offering exceptional acoustic dampening and thermal insulation.
Engineered with multiple continuous filaments to enhance mechanical strength, processing stability, and flexibility in demanding environments.
As industries globally align with carbon neutrality goals, materials specifications are undergoing significant shifts. Basalt fiber is an environmentally safe mineral material that offers high performance while minimizing ecological impact. Producing continuous basalt fiber generates a much lower carbon footprint than standard carbon fiber, carbon steel, or aluminum.
Unlike glass fiber composites, continuous basalt fiber does not contain heavy metals or halogens. In the event of a fire, basalt sleeves and tapes emit zero toxic fumes or heavy smoke. This clean composition is critical for confined public environments like transit tunnels, high-rise buildings, and underground mining operations.
Basalt composites are highly resistant to moisture, UV exposure, and biological attacks, ensuring a long service life with minimal maintenance. At the end of their operational lifecycle, these pure basalt materials can be easily crushed and recycled back into basalt mixtures, supporting circular economy practices in modern construction.
Our complete manufacturing pipeline conforms to strict international standards for quality and mechanical performance.
Stay informed on the continuous materials revolution and our latest global engineering breakthroughs.
As drone fleets slice through the sky to monitor wildfires and intelligent robots execute precision tasks on automated factory floors, modern machinery requires durable, high-performance structural support. Continuous basalt fiber composites offer the perfect blend of lightweight strength, thermal shielding, and electrical isolation, paving the way for the next generation of smart industrial applications.
Read Full ArticleClear, direct, and actionable answers to the most common technical questions from global procurement managers.
Our raw basalt fiber sleeves are rated for continuous operation at temperatures ranging from -260°C to +700°C (-436°F to +1292°F). Applying specialized post-coatings, such as vermiculite or silicone rubber, can boost short-term thermal resistance to over 1000°C, providing exceptional flame protection during heat spikes.
Continuous basalt fiber offers a wider operating temperature range, higher tensile strength, and significantly greater resistance to acids and alkalis compared to standard E-glass. This makes basalt composites highly reliable for reinforcing structures in corrosive marine environments and harsh chemical processing plants.
No, basalt fiber is naturally non-conductive and offers excellent dielectric properties. It serves as a reliable electrical insulator, making it a safe choice for cable conduit wrapping, high-voltage equipment isolation, and modern EV battery thermal runaway barriers.
Yes. We offer fully customized braided sleeves with internal diameters from 6mm up to 150mm and wall thicknesses from 1.0mm to 3.0mm. Our woven tapes can be customized in plain, twill, or satin weave structures, and we can apply tailored chemical sizing agents to match your performance requirements.
Our basalt fiber products are manufactured under rigorous ISO9001 and ISO14001 quality management guidelines. They comply fully with REACH and RoHS standards, and we can provide comprehensive mechanical and fire safety test reports to support your local engineering approval processes.
Completing our robust product line, designed to meet the diverse technical needs of global industries.
Partner with China Beihai for high-performance basalt sleeves, tapes, and structural systems. Connect directly with our engineering team in Jiujiang to discuss custom sizes, performance coatings, and bulk manufacturing rates.
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