Hongwo’s FRP Pultruded Rectangular Tubes Deliver Unmatched Performance

FRP Pultruded Rectangular Tubes: Engineering Superiority

Material Performance Benchmark

PropertyFRP Rectangular TubesSteel ChannelsAluminum ExtrusionsCorrosion Resistance20+ years3-5 years5-8 yearsThermal Expansion0.25mm/m/°C1.2mm/m/°C1.75mm/m/°CMaintenance FrequencyNoneAnnualBiannual

Technical Advantages

1. Structural Integrity
   • 70-75% glass fiber content (ASTM D3916 compliant)
   • Corner reinforcement technology (Patent CN202310XXXXXX)
   • 0.8% max water absorption (ASTM D570)
2. Economic Benefits
   • 47% lifecycle cost reduction (Qingdao Port case)
   • Zero protective coating requirements
   • 60% weight reduction vs steel

FRP Pultruded Rectangular Tubes

Industry Applications

Chemical Processing

• Withstands pH 0-14 environments
• 6-year service in Guangdong petrochemical zone

Marine Infrastructure

• 2000-hour salt spray resistance
• Documented 20-year service history

Electrical Systems

• Non-conductive (IEEE Std 1526 verified)
• 3.5× higher dielectric strength than steel

Quality Assurance

• ISO 9001 certified manufacturing
• ±2% dimensional tolerance
• RFID-enabled batch tracing