Our?pultruded fiber-reinforced polymer?profilescombine ECR-glass fibers with isophthalic polyester resin to deliver exceptional strength-to-weight characteristics. Unlike conventional?fiberglass?channels,?Hongwo‘s proprietary manufacturing process achieves ±0.15mm dimensional consistency across all production batches – a critical advantage for structural applications.
Material Composition & Key Properties
Reinforcement:70% bidirectional E-glass fabric (ASTM D4389 compliant)
Matrix System:Fire-retardant resin with 1.5% antimony trioxide additive
Physical Properties:
? 1,920 MPa flexural strength
? 0.00028 in/in/°F CLTE (longitudinal)
? 1.7 g/cm3 density (43% lighter than aluminum)
Why Choose Over Metal Extrusions?
Hongwo’s composite profiles outperform aluminum 6061-T6 in:
Salt spray resistance (zero corrosion after 10,000 hrs ASTM B117)
Thermal insulation (R-value 3.2 per inch thickness)
Electromagnetic transparency (ideal for radar installations)
Case Study: Petrochemical Pipe Support System
When thermal cycling caused aluminum support channels to fail every 14 months in a Guangdong refinery, our?FRP rectangular tubes:
Extended service life to 8+ years
Reduced maintenance downtime by 63%
Withstood 98% sulfuric acid exposure
Quality Assurance Process
Every production run undergoes:
Dielectric testing (minimum 12 kV/mm)
Barcol hardness verification (52-55 range)
Full-length dimensional scans (0.1mm accuracy)
Installation Guidelines
For optimal performance:
Use 1.5x bolt diameter edge distance
Apply 8-10 N·m torque for M8 fasteners
Avoid direct contact with dissimilar metals
…when structural reliability can’t be compromised, specify?Hongwo’s FRP rectangular tubesfor guaranteed performance.
