Yingnai FRP Round Tube provides a lightweight, corrosion-resistant circular profile for handrails, supports, frames, insulating structures and industrial fabrication. Its uniform hollow section offers balanced directional performance and convenient clamp or sleeve connections. Outside diameter, wall thickness, resin system, length, colour and surface finish can be customized for different structural and environmental requirements.
| Item | Typical Technical Specification |
| Product Name | FRP Round Tube |
| Cross-Section | Circular hollow pultruded profile |
| Typical Size Range | Outside diameter 20–200 mm; wall thickness 2–12 mm |
| Dimension Designation | Outside diameter × inside diameter × wall thickness |
| Standard Length | 6 m standard; custom cut lengths and longer sections available |
| Material System | Pultruded E-glass or ECR-glass reinforcement in an isophthalic polyester, vinyl ester or project-selected thermoset resin matrix |
| Mechanical Properties | Density 1.7–2.0 g/cm³; longitudinal tensile strength typically ≥200 MPa; longitudinal flexural strength typically ≥200 MPa; flexural modulus typically ≥17 GPa |
| Section Characteristics | Uniform torsional response, smooth outer surface and easy use with clamps or sleeve connections |
| Typical Applications | Handrails, antenna supports, tool handles, lightweight shafts, frames and insulating members |
| Inspection | Dimensional inspection, straightness, twist, cut length, surface condition, wall thickness, cure and Barcol hardness |
| Applicable Standards | ASTM D3917, ASTM D4385, ASTM D638, ASTM D790 and ASTM D2583 |
| Selected Standard Sizes | |||
| Profile Size | Unit Weight | Profile Size | Unit Weight |
| Ø90 × 76.6 × 6.7 mm | 3.55 kg/m | Ø80 × 70 × 5 mm | 2.30 kg/m |
| Ø65 × 57 × 4 mm | 1.45 kg/m | Ø60 × 48 × 6 mm | 1.88 kg/m |
| Ø60 × 50 × 5 mm | 1.66 kg/m | Ø50 × 40 × 5 mm | 1.30 kg/m |
| Ø50 × 42 × 4 mm | 1.06 kg/m | Ø51 × 43 × 4 mm | 1.09 kg/m |
| Ø48 × 38 × 5 mm | 1.26 kg/m | Ø47 × 39 × 4 mm | 1.00 kg/m |
| Ø46 × 38 × 4 mm | 0.97 kg/m | Ø46 × 42 × 2 mm | 0.53 kg/m |
| Ø40 × 32 × 4 mm | 0.82 kg/m | Ø38 × 31.8 × 3.1 mm | 0.62 kg/m |
| Ø32 × 28 × 2 mm | 0.33 kg/m | Ø31 × 25 × 3 mm | 0.51 kg/m |
| Ø25 × 20 × 2.5 mm | 0.38 kg/m | Ø21.5 × 16.5 × 2.5 mm | 0.285 kg/m |
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