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Structural Profiles - Flat Tube (Isophthalic)
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Greenlogy TEC
FRP pultruded profiles are made of glass fiber reinforcement, with 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 traction machine as a new type of composite material with good physical properties, widely used in high-strength and long-span applications.
Type | Size (mm) | Weight (kg/m) | Size (in) | Weight (lbs/in) |
|---|---|---|---|---|
Flat Tube | A*B*T1*T2 | A*B*T1*T2 | ||
| FT44 | 44*25*3.2*3.2 | 0.8 | 7/4" x 1" x 1/8" x 1/8" | 1.76 |
| FT50A | 51*25*3*3 | 0.79 | 2" x 1" x 1/8" x 1/8" | 1.74 |
| FT50B | 51*25*6.4*6.4 | 1.54 | 2" x 1" x 1/4" x 1/4" | 3.4 |
| FT76 | 76*35*3*6 | 1.55 | 3" x 11/8" x 1/8" x 1/4" | 3.42 |
| FT80 | 80*60*5*5 | 2.5 | 25/8" x 19/8" x 3/16" x 3/16" | 5.51 |
| FT91A | 91*38*4*4 | 1.78 | 7/2" x 3/2" x 3/16" x 3/16" | 3.92 |
| FT112A | 112*91*6.4*6.4 | 4.46 | 9/2" x 7/2" x 1/4" x 1/4" | 9.83 |
| FT120 | 120*45*3*3 | 2 | 19/4" x 7/4" x 1/8" x 1/8" | 4.41 |
| FT175 | 175*50*9*9 | 7 | 55/8" x 2" x 3/8" x 3/8" | 15.4 |
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Features:
Corrosion resistance
Low maintenance cost
Flame retardant
Low installation cost
Heavy metal resistant
Long service life
Electrical and thermal insulation
High strength-to-weight ratio
Raw material introduction — resin types
Code | Resin type | Flame retardancy | Recommended applications |
|---|---|---|---|
VEFR-25 | Vinyl ester type | Oxygen index 28 and above | Acid, alkali and other harsh corrosive environments |
IFR-25 | Isophthalic type | Oxygen index 28 and above | VEFR type: economical, good performance, resistant to moderate 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 are widely used in various applications, offering a unique combination of corrosion resistance, high strength, dimensional stability and light weight, along with thermal and electrical insulation. 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, longitudinal | D-638 | psi | 30000 | kgf/m² | 21092086 |
Tensile stress, transverse | D-638 | psi | 7000 | kgf/m² | 4921487 |
Tensile modulus, longitudinal | D-638 | 10^6psi | 2.5 | 10^6kgf/m² | 1758 |
Tensile modulus, transverse | D-638 | 10^6psi | 0.8 | 10^6kgf/m² | 562 |
Compressive stress, longitudinal | D-695 | psi | 30000 | kgf/m² | 21092086 |
Compressive stress, transverse | D-695 | psi | 15000 | kgf/m² | 10546043 |
Compressive modulus, longitudinal | D-695 | 10^6psi | 2.5 | 10^6kgf/m² | 1758 |
Compressive modulus, transverse | D-695 | 10^6psi | 1 | 10^6kgf/m² | 703 |
Flexural stress, longitudinal | D-790 | psi | 30000 | kgf/m² | 21092086 |
Flexural stress, transverse | D-790 | psi | 10000 | kgf/m² | 7030695 |
Flexural modulus, longitudinal | D-790 | 10^6psi | 1.8 | 10^6kgf/m² | 1266 |
Flexural modulus, transverse | 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 retardancy | ASTM | Unit | Value |
|---|---|---|---|
Tunnel test* | E-84 | Flame spread | Max. 25 |
Flame resistance* | D-635 | --- | Non-combustible |
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 | V/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
Structural profiles—flat tubes (isophthalic)—are commonly used for load-bearing and support structures requiring strength and corrosion resistance, such as platform frames, handrail posts, walkway supports and equipment frames. The isophthalic resin system suits humid, acid/alkali or outdoor exposure environments and can replace some metal profiles in various operating conditions. For specific application scenarios and installation methods, please contact us.
Selection Guidance
When selecting, consider load direction, span, connection method and environmental media, and weigh the flat tube's cross-sectional dimensions, wall thickness and resin system. The dimension table on this page lists the cross-section and unit weight of each specification for preliminary comparison; actual load capacity and deflection must be confirmed through engineering design. For selection advice for a specific project, please contact us for detailed specifications and quotation.
Product Advantages
The pultrusion process arranges glass fibers continuously along the axial direction, giving the flat tube high axial strength and stiffness, along with the FRP characteristics of light weight, corrosion resistance, non-magnetic properties, insulation and ease of processing. The isophthalic resin system further improves resistance to humid and chemical environments and facilitates on-site cutting, drilling and bolted connections. For specific performance data, please contact us.
Inquiry Guidance
If you need to determine specifications, quantity, length or other customization requirements, please contact us for detailed specifications and quotation. Please provide the operating environment, load conditions and required cross-sectional dimensions, and we will provide selection advice and commercial terms accordingly.
Operating Environment
- Pultruded FRP flat tubes made with isophthalic resin are suitable for indoor and outdoor use, including installations exposed to weathering and UV environments.
- The isophthalic resin matrix enables FRP flat tubes to resist moisture, dampness, and splashing or immersion in water treatment and chemical process areas.
- This structural profile is used in corrosive industrial environments where acids, alkalis, salts or chlorides attack conventional steel components.
- Typical locations include chemical plants, water and wastewater treatment plants, cooling towers, coastal and marine structures, and other corrosive or high-humidity sites.
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.
