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Products / Structural Profiles - Square Tube and Special-Shaped Profiles (Vinyl Ester)
Structural Profiles - Square Tube and Special-Shaped Profiles (Vinyl Ester)
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Greenlogy TEC
FRP pultruded profiles are a new type of composite material made with glass fiber reinforcement as the main raw material, resin as the binder, and glass fiber cloth as the covering reinforcing layer; after full impregnation, they are heated, formed and cured in a metal mold and then pulled by a pultrusion machine. They have good physical properties and are widely used in high-strength, long-span applications.
Type | Size (mm) | Weight (kg/m) | Size (in) | Weight (lbs/in) |
|---|---|---|---|---|
Square-Tube Profiles | A*B*T1*T2 | A*B*T1*T2 | ||
| STH50 | 50*50*6.4*5 | 3 | 2" x 2" x 1/4" x 3/16" | 6.61 |
Markets
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 cost
Flame retardant
Low installation cost
Heavy metal safety
Long service life
Non-conductive and non-thermal-conductive
High strength-to-weight ratio
Raw material introduction — resin type
Code | Resin type | Flame retardant performance | 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 | An economical VEFR-type product with good performance and moderate acid, alkali and solvent resistance |
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 scenarios, combining corrosion resistance, high strength, dimensional stability and light weight, along with thermal insulation and electrical insulation properties. Durable Greenlogy TEC profiles can provide many 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 strength | 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 |
Flammability | ASTM | Unit | Value |
|---|---|---|---|
Tunnel test* | E-84 | Flame spread | Max. 25 |
Combustibility* | 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 face
*Applies to ISOFR and VEFR only
Application Scenarios
Vinyl ester square-tube profiles are suitable for load-bearing and structural parts requiring corrosion resistance, insulation and strength, such as building supports, cable trays and guardrails, chemical platforms, and food and beverage workshop frames. If your operating conditions involve acid-base media, outdoor aging or long-span load bearing, please contact us with details of your service environment so that we can recommend a suitable profile solution.
Selection Guide
When selecting, consider section dimensions (A×B), wall thickness (T1, T2), unit weight and installation/connection method, and determine the specification based on span, load and corrosion class. Different resin systems (such as vinyl ester) have their own emphases in corrosion resistance; please contact us to confirm specific section parameters and mechanical data.
Product Advantages
The profile uses glass fiber reinforcement and a resin matrix, formed by pultrusion, and features light weight, high strength, corrosion resistance, insulating and non-magnetic properties, and ease of cutting and installation. Glass fiber cloth serves as a wrapping reinforcement layer, enabling the product to maintain strength while adapting to long spans and harsh environments.
Inquiry Guidance
For detailed specifications, section parameters, packaging and delivery arrangements for square-tube profiles, please contact us for detailed specifications and a quotation. Please provide the required section dimensions, quantity and service environment, and we will match a suitable product solution accordingly.
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.
