The FRP square tube is different from the commonly used thermoplastics. It is made of anti-aging, high-quality thermosetting resin and glass fiber system. The glass fiber reinforced plastic square tube has a variety of functions, and the key to determining these functions is the base material of the FRP square tube.
The features of fiberglass pultrusion square tubes are as follows:
- Strong corrosion resistance: The pultruded profile is immersed in 3% HCL water solution for 24 hours, and its hardness retention rate is 95%; after immersion in 3% NaCL water solution for 24 hours, its hardness retention rate is 89%.
- Low thermal insulation coefficient: the heat transfer coefficient of the pultruded profile is close to that of rigid PVC, and the thermal insulation coefficient of the single frame double glass thermal insulation window made of it is only 2.69W/(m2K).
- Adapt to environmental requirements: The production process selected for processing pultruded profiles has the characteristics of low noise, high efficiency, low power consumption, and low pollution.
- High heat distortion temperature: the heat distortion temperature of the pultruded profile is 186℃, it will not soften at high temperature, and will not be brittle at -60℃, ensuring normal use under various ambient temperatures.
- Low deformation rate: The length of the FRP pultruded profile after 1000h artificial accelerated aging changes to +0.03%, and the width change rate is -0.07%. Therefore, the shape and size of the product made of the pultruded profile can be kept stable for a long time.
- High strength: the tensile strength of the pultruded profile is 150-300MPa, the bending strength is 200-300MPa, and the bending strength preservation rate after 1000h artificial accelerated aging can reach 78%.
FRP square pipe is a kind of pultruded fiberglass profile, which can customize colors according to customer requirements and improve the environment of the place of use. Nowadays, FRP square pipe is widely used in chemical industry, electric power, marine aquaculture, pharmaceutical, dye, transportation industry, sewage Processing, food processing, paper industry, desulfurization and environmental protection, such as: FRP grating platform, FRP operating platform, FRP guardrail, FRP ladder, sports equipment, garden tools, etc.