LenRun
23 Years Experience·Carbon Fiber Products Manufacturer
Excellent Services·One-Stop Product Solution
Product Overview
Our pultruded fiberglass profiles with vinyl ester resin combine lightweight design, high tensile strength, excellent toughness, and chemical resistance. The pultrusion process allows for diverse cross-sectional shapes and virtually unlimited lengths. Long profiles offer exceptional flexibility, bending performance, and shape retention, while shorter profiles provide strong elasticity and support.
Thanks to their cost-effectiveness compared with other fiberglass manufacturing methods, these profiles are ideal for a wide range of civilian applications, including tent frames, kite skeletons, antennas, agricultural greenhouses, model aircraft, and internal reinforcement for sporting equipment.
（1）Material
Continuous unidirectional fiberglass with vinyl ester resin
（2）Key Features
• Pure unidirectional fiber structure for exceptional tensile and bending strength
• Continuous fiber design allows production in virtually unlimited lengths
• Lightweight, durable, and highly reliable
| Regular Products |
|---|
 |  |  |
|---|---|---|
| Pultruded Round Tube | Pultruded Round Rod | Pultruded Strip / Flate |
（3）Specifications
• Shapes: Round, square, rectangular, oval, trapezoid, flat strips, I-beams, C-channels, and more
• Sizes: Multiple options available for each profile
• Length: Standard 1000 mm or customized; theoretically unlimited
• Colors: Black, red, yellow, green, white, blue
（4）Advantages
• Flexible mold use: same mold can produce rods and tubes of the same profile
• Excellent performance for structural support, framing, and lightweight applications
| Non-regular Products |
|---|
 |  |  |  |
|---|---|---|---|
| Pultruded Square Tube | Pultruded Square Rod | Pultruded Rectangular Rod | Pultruded Rectangular Tube |
（5）Fiberglass Pultruded Profiles with Vinyl Ester Resin vs Epoxy Resin
Physical & Chemical Performance Comparison
• Vinyl ester pultruded profiles
Offer excellent corrosion resistance, reliable mechanical performance, and outstanding cost efficiency for most industrial and outdoor applications.
• Epoxy pultruded profiles
While more expensive to manufacture, are the preferred solution for high-performance applications that demand superior strength, fatigue resistance, and long-term dimensional stability.
| Comparison Item | Vinyl Ester Pultruded Profiles | Epoxy Pultruded Profiles |
| Tensile Strength | High (meets most industrial and structural requirements) | Higher (better utilization of fiber ultimate strength) |
| Flexural Strength / Stiffness | Good | Higher stiffness and flexural modulus |
| Compressive Strength | Good | Superior |
| Shear Strength | Good | Superior |
| Fatigue Resistance (Cyclic Load) | Medium to good | Excellent, suitable for long-term dynamic loading |
| Creep Resistance (Long-term Load) | Good | More stable with lower deformation |
| Dimensional Stability | Good | Excellent, ideal for high-precision structures |
| Weight / Density Impact | Lightweight | Lightweight (similar to vinyl ester) |
| Acid Resistance | Excellent | Good |
| Alkali Resistance | Excellent | Good |
| Salt Spray / Marine Resistance | Excellent | Good |
| Overall Chemical Resistance | Very strong (key advantage) | Medium to strong |
| Hydrolysis Resistance | Excellent, suitable for humid environments | Medium to good (depends on formulation) |
| Weather Resistance (Outdoor Use) | Excellent, long-term stability | Good |
| Service Temperature Capability | Medium to high | Higher heat resistance |
| Pultrusion Production Efficiency | High (fast curing, ideal for continuous mass production) | Lower (slower curing, higher process requirements) |
| Production Stability / Yield Rate | High | Medium |
| Unit Production Cost | Lower / cost-effective | Higher |
| Typical Application Environment | Corrosive, outdoor, industrial structures | High-strength, high-precision, fatigue-critical applications |
（6）Primary Applications
| Vinyl Ester Pultruded Profiles are ideal for | Epoxy Pultruded Profiles are ideal for |
| Chemical processing equipment and support structures | Aerospace and UAV structural components |
| Outdoor and humid environment applications | High-end sports and performance equipment |
| Marine, salt spray, and highly corrosive conditions | Applications with long-term dynamic or fatigue loading |
| Large-volume, standardized industrial profiles | High-precision equipment structures |
| Cost-sensitive projects | Projects requiring superior dimensional stability and mechanical performance |
（7）Sample Applications for Fiberglass Profiles
• Power infrastructure: insulating operating rods, utility poles, cable trays, substation frames
• Outdoor tents & shading: tent poles, canopy supports, parasol ribs
• Agriculture & aquaculture: greenhouse frames, crop support poles, irrigation piping
• Construction & municipal: ladder rungs, handrails, tool handles, grating
• Fishing & sporting goods: fishing rods, kite spines, arrow shafts
• Corrosion-resistant industry: chemical tank supports, desalination equipment, cooling tower components
 |  |  |
|---|---|---|
| Agricultural Greenhouse Frames | Umbrella Ribs | Kite Frame |
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