Structural Profiles - Hollow Board (Orthophthalic)

Application Scenarios

The orthophthalic hollow-profile structural section is suitable for load-bearing and support applications requiring high strength and larger spans, such as platform walkways, guardrail systems, frame structures and structural members in various corrosive environments. Its hollow cross-section reduces self-weight while maintaining structural stiffness, and facilitates on-site cutting and installation. For specific applicable working conditions, please contact us so that our technical staff can assess and recommend based on project conditions.

Selection Guidance

During selection, comprehensive consideration should be given to cross-section dimensions, wall thickness, span, load type and the corrosiveness of the service environment. In the table, the required specification can be matched using the designation format A1*T1*A2*T2*B*T3. The orthophthalic resin system offers good cost-effectiveness in general corrosive environments; if working conditions are special, you may discuss the choice of resin system with us. You are welcome to contact us for detailed specifications and selection advice.

Product Advantages

This profile uses glass fiber as reinforcement and resin as matrix, and is formed by impregnation, heated matched-die curing and continuous pultrusion. It has the common characteristics of composite materials such as light weight and high strength, corrosion resistance, and electrical insulation with no magnetism. The hollow structure helps improve flexural stiffness at the same section height, reducing material usage and installation load, and is suitable for structural locations with requirements on both self-weight and span.

Inquiry Guidance

If you need to know the specific specifications, dimensional tolerances, available lengths and commercial terms of the orthophthalic hollow-profile structural section, you are welcome to contact us. Please provide the required cross-section, quantity and service environment, and we will reply with detailed specifications and a quotation accordingly.

Service Environment

• This hollow-profile section is manufactured based on an orthophthalic resin system, so it is suitable for general indoor and outdoor service conditions where the structure is only intermittently exposed to moisture and chemical exposure is moderate, rather than continuously subjected to strong corrosion.
• Because this profile is a pultruded glass fiber reinforced composite material with glass fiber cloth reinforcement layers, it will not corrode like steel in humid factory environments, making it a practical choice for walkways, platforms and support frames in humid production areas and covered outdoor facilities.
• The hollow-profile section—a rectangular tube with internal ribs—is typically used as a structural member in moderate-temperature industrial environments; if the service environment involves concentrated acids, strong alkalis, continuous high temperatures or long-term UV exposure, buyers should confirm the resin grade and protection requirements before selection.
• For installations exposed to weather or washdown environments, fixing details and sealing of cut edges should be specified as part of the environmental assessment, because the long-term performance of the profile depends on whether the resin system matches the actual chemical, humidity and temperature conditions on site.