简体中文
English
Structural Profiles - Round Tube (Vinyl Ester)
Request a Quote
Please feel freely to contact with us for new price .
Greenlogy TEC
FRP pultruded profiles are a new type of composite material made with glass fiber reinforcement as the base, 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. It offers good physical properties and is widely used in high-strength, large-span applications.
Type | Size (mm) | Weight (kg/m) | Size (in) | Weight (lbs/in) |
|---|---|---|---|---|
Round Tubes | D*T | D*T | ||
| RT25 | 25*3.2 | 0.44 | 1" x 1/8" | 0.97 |
| RT26A | 26*3 | 0.42 | 1" x 1/8" | 0.93 |
| RT26B | 26*4.8 | 0.63 | 1" x 3/16" | 1.39 |
| RT32A | 32*3.2 | 0.55 | 5/4" x 1/8" | 1.21 |
| RT32B | 32*5 | 0.81 | 5/4" x 3/16" | 1.79 |
| RT32C | 32*6 | 0.96 | 5/4" x 1/4" | 2.12 |
| RT38A | 38*3.2 | 0.65 | 3/2" x 1/8" | 1.43 |
| RT38B | 38*4 | 0.81 |
3/2" x 3/16"
| 1.79 |
| RT38C | 38*5 | 1 | 3/2" x 3/16" | 2.2 |
| RT38D | 38*6.4 | 1.18 | 3/2" x 1/4" | 2.6 |
| RT41 | 41*4.5 | 0.98 | 13/8" x 3/16"
| 2.16 |
| RT42A | 42*3.2 | 0.7 | 13/8" x 1/8" | 1.54 |
| RT42B | 42*5 | 1.11 | 13/8" x 3/16" | 2.45 |
| RT42C | 42*6.4 | 1.45 | 13/8" x 1/4" | 3.2 |
| RT48 | 48*6.4 | 1.58 | 15/8" x 1/4" | 3.48 |
| RT50A | 50*3.2 | 0.84 | 2" x 1/8" | 1.85 |
| RT50B | 50*4 | 1.1 | 2" x 3/16" | 2.43 |
| RT50C | 50*5 | 1.34 | 2" x 3/16" | 2.95 |
| RT50D | 50*6.4 | 1.67 | 2" x 1/4" | 3.68 |
| RT50E | 50*3.5 | 0.96 | 2" x 1/8" | 2.12 |
| RT50.8A | 50.8*6.4 | 1.7 | 2" x 1/4" | 3.75 |
| RT50.8B | 50.8*3.2 | 0.86 | 2" x 1/8" | 1.9 |
| RT64A | 64*3.5 | 1.26 | 5/2" x 1/8" | 2.78 |
| RT64B | 64*6.4 | 2.38 | 5/2" x 1/4" | 5.25 |
| RT75 | 75*4.2 | 1.8 | 3" x 3/16" | 3.97 |
| RT76 | 76*6.4 | 2.64 | 3" x 1/4" | 5.82 |
| RT89A | 89*3.2 | 1.54 | 7/2" x 1/8"
| 3.4 |
| RT89B | 89*5 | 2.51 | 7/2" x 3/16"
| 5.35 |
| RT89C | 89*6.4 | 3.13 | 7/2" x 1/4" | 6.9 |
| RT99 | 99*5 | 2.81 | 4" x 3/16" | 6.19 |
| RT101 | 101*6.4 | 3.62 | 4" x 1/4" | 7.98 |
| RT114A | 114*3.2 | 2.12 | 9/2" x 1/8" | 4.67 |
| RT114B | 114*5 | 3.25 | 9/2" x 3/16"
| 7.17 |
| RT114C | 114*6.4 | 4.11 | 9/2" x 1/4" | 9.06 |
| RT114D | 114*9.5 | 5.93 | 9/2" x 3/8" | 13.07 |
| RT150A | 150*3.2 | 2.81 | 6" x 1/8" | 6.19 |
| RT150B | 150*5 | 4.35 | 6" x 3/16" | 9.59 |
| RT150C | 150*6.4 | 5.5 | 6" x 1/4"
| 12.1 |
| RT150D | 150*9.5 | 8 | 6" x 3/8" | 17.6 |
Application markets
Construction
Bridges and highways
Chemical
Food and beverage
Manufacturing
Metals and mining
Microelectronics
Oil and gas
Pharmaceutical
Power
Pulp and paper
Recreation and entertainment
Telecommunications
Transportation
Water and wastewater
Features:
Corrosion resistance
Low maintenance cost
Flame retardant
Low installation cost
Heavy-metal resistant
Long service life
Non-conductive and thermally non-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 | Severe acid, alkali and other corrosive environments |
IFR-25 | Isophthalic type | Oxygen index 28 and above | VEFR type, economical, and with excellent, 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 are widely used in various applications, combining 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
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 | 25 max |
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 surface
*Applies to ISOFR and VEFR only
Applications
Vinyl round tube is suitable for applications requiring high corrosion resistance and strength, such as handrails and support posts for chemical and wastewater treatment platforms, frames and ladders for marine and coastal engineering, and insulating structural components in power, rail transit and other fields.
In scenarios with large spans or clear lightweighting requirements, round tubes can serve as primary load-bearing members or truss web members, and are easy to combine with other pultruded profiles (such as square tubes, angles, and plates) in designs.
Selection Guidance
When selecting, first confirm the medium type and concentration in the service environment, operating temperature, UV exposure conditions, as well as the required load form (tension, compression, bending) and connection method of the structure, then choose the appropriate tube diameter, wall thickness, and resin system accordingly.
Different diameters and wall thicknesses correspond to different moments of inertia and load-bearing capacities. It is recommended to determine specifications based on design drawings or span requirements; if you need cross-section recommendations for specific working conditions, you are welcome to contact us with parameters and our technical team will assist with selection.
Product Advantages
Vinyl ester resin systems generally offer good corrosion resistance and temperature performance. Combined with glass fiber reinforcement, round tubes have the typical advantages of composite materials such as being lightweight and high-strength, electrically insulating and non-magnetic, and maintenance-free.
The pultrusion process distributes fibers continuously along the axial direction, giving products stable dimensions and smooth surfaces that are easy to cut, drill, and install on site, making them suitable for replacing some metal pipe fittings prone to corrosion.
Inquiry Guidance
If you would like to know specific specifications, resin types, colors, lengths, and packaging methods, or wish to obtain samples and bulk supply solutions, please contact us. Please provide the service environment, expected range of tube diameter and wall thickness, quantity, and delivery location, and we will arrange technical contact and quotation.
Custom cross-sections, special resin systems, and matching connectors are all open for discussion. Detailed specifications and commercial terms are subject to the formal inquiry reply.
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.
