| Customization: | Available |
|---|---|
| After-sales Service: | None |
| Warranty: | None |
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Glass fiber reinforced plastic (GRP) crossarm, also known as fiberglass crossarm, is a structural component widely used in power transmission and distribution systems. It is fabricated from thermosetting resin and glass fiber reinforcement, which gives it excellent mechanical and electrical properties.
The production process of GFRP crossarms involves several steps, including mold-making, resin impregnation, curing, and finishing. First, the mold is fabricated according to the desired shape and size of the crossarm. Then, glass fiber mat or cloth is cut to size and laid into the mold. The mold is then vacuum-sealed and resin is introduced through small holes. The resin impregnates the glass fiber and fills the voids between the fibers, creating a solid composite. The mold is then heated to cure the resin and form the PRFV crossarm.
High strength cross arm :End cap+Square tube+Foam+punch
Common cross arm :End cap+Square tube+punch
Details Images
Product advantage
One of the key advantages of GFRP Power Cross arms is their long service life. They have a low coefficient of thermal expansion, which reduces the risk of cracking or warping due to temperature changes. They are also highly resistant to weathering, such as sun exposure and harsh winds. Additionally, they require minimal maintenance, which reduces downtime and improves reliability.
structural PRFV crossarms are available in various sizes and shapes to accommodate different applications. They can be customized to meet specific requirements, such as increased strength or stiffness for high load applications. They can also be designed to have tapered ends, which reduces wind drag and improves the aerodynamics of transmission lines.
| Solid / hollow cross arms | |
| Polyurethane foam filling | No polyurethane foam filling |
| Improve the rigidity of the cross arm | Weaker hardness |
| Prevent plastic deformation | Easy to deform |
| Pultrusion Profiles Performance Index | |||
| Property | TEST Method | Units | Mean-Value lw/cw |
| Tensile Strength | ASTM D638/GB1447--83 | MAa | 210/75 |
| Tensile Modulus | ASTM D638/GB1447--83 | GPa | 22/10 |
| Flezural Strengh | ASTM D790/GB1449--83 | MPa | 302/76 |
| Flezural Modules | ASTM D790/GB1449--83 | GPa | 18.6/7.2 |
| Compressive Strengh | ASTM D695/GB1448--83 | MPa | 258/98 |
| Compressive Modules | ASTM D695/GB1448--83 | GPa | 19.2/7.2 |
| Interlaminar Shea(LW) | ASTM D2344/GB3357--82 | MPa | 24.5 |
| Charpy Impact Strengh | ISO179/GB1451--83 | 2 KJ/m |
279 |
| Barcol Hardness | ASTM D2583 | - | 50 |
| Elongation to break | ASTM D638/GB1447--83 | % | 0.9 |
| Water Absorption(MAX) | ASDN D570/GB1462 | % | 0.57 |
| Density | ASTM D792 | 3 g/cm |
1.8 |
| Coefficient of Thermal Expansion | ASTM D696/GB2572--82 | -6 10 /ºC |
5.1 |
| Flammability Classification | UL94/GB8924--88 | - | VO(32) |
| Tunel Test | ASTM E--84 | - | 25Max |
| Flammability Extinguishing | ASTM D635 | - | self extinguishing |
| Arc Resistance(LW) | ASTM D495/GB1411--78 | min/(s) | 120 |
| Dielectric Constant(PF) | ASTM D150/GB1409--79 | @60Hz | 5 |
| Dielectric Strength(PF) | ASTM D149/GB1408--78 | KV/mm | 8 |
| Dielectric Strength(PF) | ASTM D149/GB1408--78 | KV/mm | 1.6 |
| Surface Resistance | ASTM D257/GB1410--78 | Ω | 15 12 10 -10 |
| Volume Resistance | ASTM D257/GB1410--78 | Ω.cn | 15 12 10 -10 |
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