HPM® EG-S
Spray-Up Grade E-Glass Chopped Strands
Stronger, More Durable Fiberglass Reinforcement
Since 2002, we have specialized in concrete crack resistance, waterproofing, and anti-corrosion technologies.
E-Glass Chopped Strands for Spray-Up Composites | PIONEER®
Durable, High-Strength Fiberglass Fiber Reinforcement
What Are PIONEER® E-Glass Chopped Strands?
PIONEER® HPM® EG-S is a premium E-glass chopped strand engineered for spray-up fiberglass composites and thermoplastic reinforcement. Manufactured using alkali-free glass fiber, these soft chopped strands disperse quickly and uniformly without clumping, enhancing tensile and flexural strength while supporting smooth, efficient processing for high-quality molded surfaces. Backed by over 22 years of expertise, PIONEER® ensures reliable, cost-effective reinforcement for composite manufacturers globally.
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Technical Specifications of Our E-Glass Chopped Strands for Composites
Discover the technical details ensuring consistent quality and ease of processing in your fiberglass-reinforced composites.
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Material: Alkali-free E-glass (fiberglass fiber)
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Type: Soft chopped strands
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Specific Gravity: 2.6 g/cm³
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Filament Diameter: 11 µm
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Length: 3 mm, 4.5 mm
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Tensile Strength: 1700MPa
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Moisture Content: <0.1%
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Loss on Ignition: 0.55 ± 0.15%
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Sizing: Compatible with polyester, epoxy, and thermoplastic resins
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Color: White
International Standards Compliance for E-Glass Fiber
PIONEER® E-glass chopped strands comply with key industry standards, ensuring reliable performance in fiberglass composites and spray-up applications.
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ISO 1887: Loss on ignition of glass fiber
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ISO 3344: Moisture content of glass fiber
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ISO 2559: Basis for specification of woven glass fabrics
How E-Glass Chopped Strands Strengthen Spray-Up Fiberglass Composites？
Learn how PIONEER® fiberglass fibers improve the structural integrity of your spray-up and hand lay-up composites.
PIONEER® HPM® EG-S chopped strands form a uniform reinforcement network within resin matrices, enhancing tensile and flexural strength while maintaining lightweight properties. They support excellent resin wet-out, smooth processing, and high-quality surface finishes in fiberglass-reinforced composites used for boats, panels, tanks, and decorative GRC products.
Sanitary ware – Bathtubs, shower stalls, sinks
Marine industry – Small boat hulls, decks, engine covers
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Key Benefits of Using E-Glass Chopped Strands in Composites
Take advantage of PIONEER® fiberglass fiber reinforcement for superior composite performance:
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High Strength: Enhances tensile and flexural strength in fiberglass composites.
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Excellent Dispersion: Uniform distribution during mixing and spraying.
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Smooth Processing: Easy handling with reduced static during production.
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Corrosion Resistance: Excellent durability in harsh environments.
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Versatile Compatibility: Suitable for polyester, epoxy, and thermoplastic resins.
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Consistent Finish: Supports high-quality molded surfaces.
Where to Use E-Glass Chopped Strands for Spray-Up and Composite Applications？
PIONEER® chopped strands adapt to a wide range of fiberglass-reinforced composite applications:
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Spray-up and hand lay-up (boats, panels, tanks)
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Injection molding for automotive and appliance parts
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BMC/SMC for electrical and automotive applications
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Thermoplastic compounding (PP, PA, PBT)
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Decorative and structural GRC panels
Covers, housings, cable trays
Body panels, hoods, liners
Small boat hulls, decks
Not sure how to choose the right fiber or dosage?
Our team can recommend a solution based on your project requirements.
Email us：sales@pioneerfibre.com
How to Use E-Glass Chopped Strands Effectively？
Ensure optimal reinforcement and process efficiency in your fiberglass composite manufacturing.
Usage Guidelines
1. Design: Compatible with existing resin formulations for fiberglass composites.
2. Dosage: Typically 15–30% by weight, adjusted per project requirements.
3. Length: 6 mm for injection molding; 12 mm for spray-up and hand lay-up.
4. Mixing: Add gradually for uniform dispersion during processing.
5. Note: Maintain appropriate resin viscosity for effective fiber wet-out.
Custom Glass Fiber Solutions for Your Composite Manufacturing
We provide tailored chopped lengths, packaging, and OEM/ODM services to match your production needs.
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Lengths: Custom chopped lengths available upon request.
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Packaging:Bulk ton bags for large-scale production 5–25 kg cartons for flexible handling
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OEM/ODM: Private label services for fiberglass fiber distributors.
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Why Choose Us?
Proven Expertise & Greater Savings
22 years of focus
on concrete protection solutions.
20+ patents & awards
In concrete durability technology
20+ countries served
with global product distribution.
1,000 projects proven
in diverse applications worldwide.
FAQ
Their soft, uniform strands disperse easily, preventing clumping and enabling faster, smoother processing for superior molded surfaces.
They are manufactured with alkali-free glass fiber and over 22 years of expertise, ensuring reliable, cost-effective reinforcement for composite manufacturers.
HPM® EG-S is ideal for spray-up fiberglass composites and can be used in thermoplastic reinforcement, providing consistent performance across applications.
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Why Choose PIONEER® Technologies
Tested, Proven, and Engineered for Concrete Crack Control and Durability
Partner with a trusted leader in concrete crack control, fiber reinforcement, and crystalline waterproofing solutions for modern infrastructure and high-performance concrete systems.
1. Independently Tested and Certified
Validated through independent laboratory testing and compliant with ASTM standards and CE certification, PIONEER® technologies deliver reliable performance in fiber reinforced concrete and crystalline waterproofing applications.
2. Proven in Real Projects Worldwide
With applications in over 1,000 projects across 20+ countries, our systems have been used in major infrastructure such as the Hong Kong–Zhuhai–Macao Bridge, Bangladesh Subsea Tunnel, and metro systems, demonstrating consistent performance in demanding environments.
3. Integrated Reinforcement and Waterproofing Solutions
We provide advanced systems including macro synthetic fibers, micro fiber reinforcement, and crystalline waterproofing, supporting applications in industrial floors, precast concrete, ready-mix, and infrastructure projects.
4. Direct Manufacturer with Engineering Support
We offer dosage design, mix optimization, and on-site technical support, backed by over 24 years of experience, ensuring efficient implementation and consistent performance across large-scale construction projects.
26,500m² production base
Advanced fiber dispersibility
Exceptional tensile strength
