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Help CenterFRP Round Tube 89mm OD 7mm Wall 0.5mm Surface Smooth Tolerance ISO2768-mK for Precision Machine Guard Rail
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Hengshui Ruibin New Materials LLC is a professional manufacturer of composite products, with an annual export value between US$2.5 Million and US$5 Million and a dedicated production facility located in Hengshui, Hebei Province. This FRP round tube is one of our standard industrial profiles, designed for precision machine guard rails where reliable dimensions and surface quality directly affect installation efficiency. The 89 mm outer diameter and 7 mm wall thickness give the tube enough cross-sectional strength to withstand impact and vibration in workshop surroundings. A carefully finished 0.5 mm smooth surface makes the guard easy to clean and lowers the risk of scratches or fiber exposure during operation.
- FRP composite construction: the tube is based on glass fiber reinforcement combined with corrosion-resistant resin systems, offering good electrical insulation and low thermal conductivity.
- Accurate outer profile: 89 mm OD and 7 mm wall thickness are maintained through a continuous composite forming process, reducing dimensional variation between pieces.
- Smooth surface finish: targeting a 0.5 mm surface smoothness, the tube reduces friction when cable trays, brackets, or sliding guards come into contact.
- Tolerance reference ISO 2768-mK: general linear and geometrical tolerances follow the ISO 2768-mK standard to support precision assembly and mechanical alignment.
- Lightweight handling: compared with steel tubing of similar stiffness, this FRP round tube is easier to move, cut, and install on overhead or vertical machine frames.
- Low maintenance: the material's resistance to moisture, mild chemicals, and corrosion helps guard rails keep their appearance and structural performance over time.
| Parameter | Specification | Customer Benefit |
| Material | Fiber reinforced plastic (FRP) | Corrosion-resistant and electrically insulating |
| Outer diameter | 89 mm nominal | Consistent with standard clamps and brackets |
| Wall thickness | 7 mm nominal | Good structural stiffness for guard spans |
| Surface smoothness | 0.5 mm smooth finish | Reduced snagging and easier cleaning |
| Tolerance | ISO 2768-mK | Dependable fit during assembly |
| Standard length | 4 m or 6 m | Convenient cutting layout for projects |
| Color | Black, grey, custom | Flexible visual matching for equipment |
| Application | Machine guard rail, safety barrier, automation frame | Versatile use in industrial environments |
Key Operational Benefits
- Precise mounting: consistent OD helps clamps and brackets attach without excessive shimming or rework.
- Better workplace safety: smooth wall surfaces minimize cutting risk during assembly and guard maintenance.
- Reliable protection: the 7 mm wall resists lateral deflection in fixed spans, supporting stable machine guarding structures.
- Corrosion resistance: no rust staining on workshop floors or equipment bases compared to metal tubing.
- Electrical insulation: suitable for guarding areas near electrical cabinets and high-voltage panels.
- Flexible fabrication: the composite tube can be machined, drilled, routed, and fastened with basic workshop tools.
Typical Applications
- CNC machine guarding and panel surrounds
- Precision automation equipment frames
- Assembly line protective rails
- Warehouse and packing station safety barriers
- Custom composite structures for material handling systems
Factory Service and Export Support
As a manufacturer with 1,000-3,000 square meters of production space and a team of 101-200 employees, we carry out internal inspection routines covering outer diameter, wall thickness, surface smoothness, straightness, and packing checks for every FRP tube lot. We ship from Tianjin Port and Qingdao Port using protective packaging such as surface film wrapping, bundling, or palletized loading according to order requirements. For custom lengths, color matching, small trial orders, and project-based purchasing, our production planning team is flexible and responsive.
Hengshui Ruibin New Materials LLC was established in 2019 and now serves a wide range of markets, including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, South Asia, and the domestic Chinese market. Our experience with international container shipments and custom composite profiles enables us to supply machine builders, automation integrators, and industrial safety equipment distributors with consistent quality. If your machine guard project needs a durable and dimensionally stable composite tube, please contact us with your required length, quantity, and finishing details. We will be glad to support your sample request or bulk order.
FAQ
Q: Can this FRP round tube be supplied in customized lengths?
A: Yes, standard supply is 4 m or 6 m. Custom length cutting is available upon request, and we can also arrange trial quantities for first-time orders.
Q: Is the 89 mm FRP tube strong enough for machine guard rails?
A: The 7 mm wall thickness provides substantial stiffness for typical guard spans. Final load capacity depends on mounting distance and span, so we recommend confirming the support spacing before production.
Q: What does the 0.5 mm surface smoothness mean for installation?
A: It means the outer surface has a smooth profile within 0.5 mm variation, which reduces friction marks, makes cleaning easier, and lowers the chance of fiber protrusion.
Q: Are FRP tubes corrosion-resistant?
A: Yes, the resin matrix provides good resistance to atmospheric moisture, mild chemicals, and many industrial exposures, making the tube suitable for workshops, washdown areas, and outdoor installations where rust is a concern.
Q: Can the tube be painted or supplied in a custom color?
A: The tube is available in black, grey, and other custom colors depending on order volume. If a project requires color matching, please confirm the color code before production.
Q: How does tolerance ISO 2768-mK affect the product?
A: It provides a practical tolerance framework for linear dimensions and geometrical features. This helps installers align tubes, fittings, and end caps with predictable fit during guard assembly.
Q: Do you accept sample orders?
A: Yes, we accept trial orders. The order threshold may vary according to length and color, so please contact our sales team with your specification and destination port for a detailed quotation.
Q: What packaging is used for export?
A: Each tube is protected with surface film or wrapping, then bundled or palletized for container loading. Both Tianjin Port and Qingdao Port are available for shipment.
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