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 24 years of expertise, PIONEER® ensures reliable, cost-effective reinforcement for composite manufacturers globally.
high-quality glass fibers
Quality Guaranteed
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
Applicable standards and test methods
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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
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
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.
Contact Our Sales & Technical Team
For product inquiries, quotations, technical support, or distribution opportunities,
contact our team directly.
Sales & Business: Sales@pioneerfibre.com
Technical Support: Support@pioneerfibre.com
Sales Manager: +1 (406) 717-9829
Technical Director: +1 (929) 569-9992
Get a Quick Quote or Product Recommendation
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Why Choose Us?
Proven Expertise & Greater Savings
24 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.
Why Choose PIONEER Glass Fibers
1. Product-Specific Documentation
Request current technical data sheets, available test reports and applicable conformity documents for the selected glass fiber.
2. Application-Based Selection
Select glass fibers according to the matrix material, processing method, exposure conditions and required performance.
3. Glass Fiber Options
Compare available glass types, fiber lengths, strand formats and sizing systems for the intended application.
4. Technical Support
Get support with product selection, addition rates and processing guidance. Confirm compatibility and performance through application-specific trials.
26,500m² production base
Advanced fiber dispersibility
Exceptional tensile strength
FAQ
HPM® EG-S is a soft E-glass chopped-strand product designed primarily for spray-up composite manufacturing.
HPM® EG-S is the PIONEER® E-glass product designation for its spray-up chopped-strand grade. Product selection should follow the current HPM® EG-S Technical Data Sheet.
No. HPM® EG-S is an E-glass product. Where alkali-resistant glass is required for concrete or GFRC, evaluate the dedicated HPM® AR product.
Resin compatibility depends on the current EG-S surface sizing. Confirm the approved resin systems in the latest Technical Data Sheet before production.
Available strand lengths should be confirmed using the current HPM® EG-S Technical Data Sheet. Do not transfer length recommendations from other E-glass grades or processes.