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Structural Profiles - Stair Tread Flat Tube (Isophthalic)
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Greenlogy TEC
FRP pultruded profiles are made from glass fiber reinforcement as the raw material, resin as the binder, and glass fiber cloth as the wrapping reinforcement layer. After full impregnation, they are heated, formed and cured in a metal mold and pulled out by a pulling machine. This new type of composite material has good physical properties and is widely used in high-strength and long-span applications.
Type | Size (mm) | Weight (kg/m) | Size (in) | Weight (lbs/in) |
|---|---|---|---|---|
Stair Tread Flat Tube | A*B*T1*T2 | A*B*T1*T2 | ||
| FT51A | 51*25*4*4 | 1.01 | 2" x 1" x 3/16" x 3/16" | 2.23 |
| FT51B | 51*38*4*4 | 1.22 | 2" x 3/2" x 3/16 x 3/16 | 2.69 |
| FT52 | 52*32*5*5 | 1.41 | 2" x 5/4" x 3/16" x 3/16" | 3.11 |
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Construction
Bridges and highways
Chemical
Food and beverage
Manufacturing
Metals and mining
Microelectronics
Oil and gas
Pharmaceutical
Power
Pulp and paper
Recreation
Telecommunications
Transportation
Water and wastewater
Features:
Corrosion resistance
Low maintenance
Flame retardant
Low installation cost
Heavy metal resistant
Long service life
Non-conductive and non-thermal-conductive
High strength-to-weight ratio
Raw material introduction — resin types
Code | Resin type | Flame retardant performance | Recommended applications |
|---|---|---|---|
VEFR-25 | Vinyl ester type | Oxygen index 28 and above | Harsh corrosive environments such as acids and alkalis |
IFR-25 | Isophthalic type | Oxygen index 28 and above | VEFR type: economical, with good, moderate resistance to acids, alkalis and solvents |
OFR-25 | Orthophthalic type | Oxygen index 28 and above | General acid and alkali environments |
Applications:
Greenlogy TEC pultruded FRP structural profiles combine corrosion resistance, high strength, dimensional stability and light weight, with thermal insulation and electrical insulation properties. Durable Greenlogy TEC profiles provide years of low-maintenance service in areas where steel, aluminum or wood components are traditionally specified. Today, these profiles are often used in highly corrosive applications that previously required stainless steel and other costly components.
Greenlogy TEC profiles
Mechanical properties | ASTM | Unit | Value | Unit | Value |
|---|---|---|---|---|---|
Tensile stress, LW | D-638 | psi | 30000 | kgf/m² | 21092086 |
Tensile stress, CW | D-638 | psi | 7000 | kgf/m² | 4921487 |
Tensile modulus, LW | D-638 | 10^6psi | 2.5 | 10^6kgf/m² | 1758 |
Tensile modulus, CW | D-638 | 10^6psi | 0.8 | 10^6kgf/m² | 562 |
Compressive stress, LW | D-695 | psi | 30000 | kgf/m² | 21092086 |
Compressive stress, CW | D-695 | psi | 15000 | kgf/m² | 10546043 |
Compressive modulus, LW | D-695 | 10^6psi | 2.5 | 10^6kgf/m² | 1758 |
Compressive modulus, CW | D-695 | 10^6psi | 1 | 10^6kgf/m² | 703 |
Flexural stress, LW | D-790 | psi | 30000 | kgf/m² | 21092086 |
Flexural stress, CW | D-790 | psi | 10000 | kgf/m² | 7030695 |
Flexural modulus, LW | D-790 | 10^6psi | 1.8 | 10^6kgf/m² | 1266 |
Flexural modulus, CW | D-790 | 10^6psi | 0.8 | 10^6kgf/m² | 562 |
Modulus of elasticity | Full section | 10^6psi | 2.8 | 10^6kgf/m² | 1969 |
Shear modulus | --- | 10^6psi | 0.45 | 10^6kgf/m² | 316 |
Short-beam shear | D-2344 | psi | 4500 | kgf/m² | 3163813 |
Punch shear | D-732 | psi | 10000 | kgf/m² | 7030695 |
Notched Izod impact strength, LW | D-256 | ft.-lbs./in. | 25 | kg/m | 3.46 |
Notched Izod impact strength, CW | D-256 | ft.-lbs./in. | 4 | kg/m | 0.55 |
Excluding round rods and square rods
Physical properties | ASTM | Unit | Value |
|---|---|---|---|
Barcol hardness | D-495 | --- | 45 |
24-hour water absorption | D-570 | % max | 0.45 |
Density |
D-792 | lbs./in.³ | 0.062-0.07 |
Coefficient of thermal expansion, LW | D-696 | 10^-6in./in./℃ | 8 |
Flame retardant performance | ASTM | Unit | Value |
|---|---|---|---|
Tunnel test* | E-84 | Flame spread | Max 25 |
Flame resistance* | D-635 | --- | Non-burning |
Electrical properties | ASTM | Unit | Value |
|---|---|---|---|
Arc resistance, LW | D-495 | 秒（s） | 120 |
Dielectric strength, LW | D-149 | kv./in. | 35 |
Dielectric strength, PF | D-149 | Volts/mil | 200 |
Dielectric constant, PF | D-150 | @60hz | 5 |
LW = lengthwise, CW = crosswise, PF = perpendicular to laminate surface
*Applies to ISOFR and VEFR only
Application Scenarios
The stair tread flat tube (isophthalic) is suitable for industrial platforms, stair treads, walkways and other locations requiring slip resistance and corrosion resistance. Its structural design facilitates the installation of anti-slip grit or grating panels, enhancing safety. Please contact us for specific application solutions.
Selection Guide
When selecting, consider factors such as load requirements, span and corrosive environment, and refer to the flat tube's dimensions and weight parameters. Isophthalic resin offers better corrosion resistance and is suitable for harsh environments such as chemical plants. For technical support, please contact us.
Product Advantages
Made with isophthalic resin, it offers excellent corrosion resistance and mechanical strength; glass fiber reinforcement ensures high load-bearing capacity; lightweight and high-strength for easy installation; insulating and non-magnetic, suitable for a variety of industrial environments.
Inquiry Guide
For detailed specifications, quotations or customization services, please contact us for more information. We provide professional technical support and prompt response.
Service Environment
- This structural profile is produced with an isophthalic resin system, a formulation selected specifically for FRP components subjected to wet and chemical exposure conditions, making it suitable for both indoor plant environments and outdoor installations.
- Typical use is as a stair tread flat tube on FRP walkways, platforms and tread boards, where the profile bears foot traffic and is continuously exposed to weather, washdown water and atmospheric moisture.
- Pultruded glass fiber reinforced material using resin as the adhesive and glass fiber cloth as the wrapping reinforcement layer enables this flat tube to be used in corrosive industrial environments such as chemical plants, wastewater treatment areas, and marine and coastal locations, where steel requires coating or replacement.
- Because the resin is corrosion-resistant and the composite material does not rust, the profile maintains its function under the temperature fluctuations and repeated wetting conditions typical of outdoor and process area use; for project-specific media and conditions, please contact the supplier for the full parameter table.
Custom Cutting
Need panels that fit, or cut to shape? We custom cut FRP grating and profiles to your drawing: panels cut to size or to shape (corner cuts, cutouts), cut edges sealed with resin, and pre-cut and pre-drilled to drawing before shipping. See the custom cutting services.
