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Structural Profiles - Hollow Profile (Isophthalic)
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Greenlogy TEC
FRP pultruded profiles are a new type of composite material made from glass fiber reinforcement as the raw material, resin as the binder, and glass fiber cloth as the outer reinforcing layer. After thorough impregnation, the material is heated, formed and cured in a metal mold and then pulled by a pultrusion machine. With good physical properties, it is widely used in high-strength and long-span applications.
Type | Size (mm) | Weight (kg/m) | Size (in) | Weight (lbs/in) |
|---|---|---|---|---|
Hollow Profile | A1*T1*A2*T2*B*T3 | A1*T1*A2*T2*B*T3 | ||
| 500*6*450*6*48.5*6 | 16.4 | 20" x 1/4" x 18" x 1/4" x 2" x 1/4" | 36.2 | |
| 500*6*450*6*48.5*9 | 18.5 | 20" x 1/4" x 18" x 1/4" x 2" x 3/8" | 40.8 | |
| 650*13*550*13*98.5*12 | 52.5 | 51/2" x 1/2" x 173/8" x 1/2" x 4" x 1/2" | 116 | |
| 725*4.5*675*4.5*45*4.5 | 17.9 | 57/2" x 3/16" x 53/2" x 3/16" x 7/4" x 3/16" | 39.5 |
Markets
Construction
Bridges and highways
Chemical
Food and beverage
Manufacturing
Metals and mining
Microelectronics
Oil and gas
Pharmaceutical
Power
Pulp and paper
Leisure
Telecommunications
Transportation
Water and wastewater
Features:
Corrosion resistance
Low maintenance
Flame retardant
Low installation cost
Heavy-metal resistant
Long service life
Non-conductive, non-thermal-conductive
High strength-to-weight ratio
Raw material introduction — resin types
Code | Resin type | Flame retardancy | Recommended applications |
|---|---|---|---|
VEFR-25 | Vinylester 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, moderate acid/alkali and solvent resistance |
OFR-25 | Orthophthalic type | Oxygen index 28 and above | General acid and alkali environments |
Applications:
Greenlogy TEC pultruded fiberglass structural profiles are used in a wide range of applications, combining corrosion resistance, high strength, dimensional stability and light weight with thermal insulation and non-conductive 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, 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 | 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 structural hollow profile (isophthalic) is suitable for load-bearing and support structures with requirements on strength and span, such as platform walkways, stair treads, handrails, cable tray supports, and frame members in corrosive environments such as chemical, marine and municipal facilities. Its hollow section maintains section stiffness while facilitating splicing and cut-out installation. To confirm whether it suits your specific application, please contact us with your operating conditions.
Selection Guide
When selecting, first determine the section height and wall thickness based on span, load and support method, then choose the cut-out or splicing solution according to the connection form of the installation node; the isophthalic resin system is suitable for environments with high corrosion resistance requirements and can be further discussed based on the medium and temperature conditions. The specifications listed on the page are common references; for actual dimensions, weight and mechanical parameters, please contact us for detailed specifications and a quotation.
Product Advantages
This profile uses glass fiber as reinforcement and resin as matrix and is formed by impregnation, heating, compression molding and curing with continuous pulling; it features light weight, high strength, corrosion resistance, non-magnetic properties, electrical insulation and ease of processing, cutting and drilling. The hollow profile structure achieves a larger section moment of inertia with the same material usage, making it suitable for high-strength, long-span support requirements. Contact us for information on the material system and process.
Inquiry Guidance
If you need to confirm requirements such as section dimensions, length, color, surface treatment, packaging and transportation, please contact us for detailed specifications and a quotation; we will recommend suitable specifications and supply solutions according to your project conditions. Bulk procurement, custom sections and technical selection support can all be discussed together.
Service Environment
- These FRP pultruded hollow profiles use glass fiber as reinforcement and resin as bonding matrix; the finished structural profiles are suitable for outdoor and indoor service environments where moisture and atmospheric exposure persist—including walkways, platforms and structural frames exposed to the weather.
- The isophthalic resin system used in this hollow profile grade makes it suitable for installation sites with corrosive media, such as chemical plants, wastewater treatment areas and coastal or seaside sites, where steel profiles require frequent coating maintenance.
- Because the profile is cured in a heated metal mold and formed by continuous pulling, the hollow profile maintains its section across the service temperature range from normal ambient conditions to high-temperature plant environments; specific temperature and chemical resistance limits should be confirmed with us for each medium and concentration.
- The hollow core also keeps weight low, making it suitable for long-span handrails, grating supports and platform frame members installed in high-humidity or washdown areas; before selecting A1*T1*A2*T2*B*T3 hollow profile for a specific environment, please contact Greenlogy TEC for the complete 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.
