WRB 400x400 Bolt Truss: Technical Data Sheet and Selection Guide
Introduction
The WRB 400x400 bolt truss is an aluminum structure commonly used in events, entertainment, and audiovisual applications. Its 400 mm square section and bolt assembly make it a robust and versatile solution. This article details its technical data sheet, load capacities, and helps you choose the right model for your application.
What is a bolt truss?
A bolt truss is an assembly of aluminum tubes connected by end fittings and bolts. Unlike quick-connect systems, assembly requires tools, but offers high rigidity and excellent durability over time. The WRB 400x400 refers to a square section of 400 mm per side.
Technical data sheet for the WRB-40 400x400
The flagship model in this category is the WRB-40 400*400 Bolt Truss. Here are its technical specifications:
- Section: 400 x 400 mm
- Main tube (主管): 50 x 3 mm
- Secondary tube (副管): 50 x 2 mm
- Bracing tube (斜管): 25 x 2 mm
- Material: 6082/6061-T6 alloy
- Available lengths: 50 cm, 100 cm, 150 cm, 200 cm, 250 cm, 300 cm, 350 cm, 400 cm
- References: WRB-40-050, WRB-40-100, WRB-40-150, WRB-40-200, WRB-40-250, WRB-40-300, WRB-40-350, WRB-40-400
These data come from TÜV Rheinland tests and our ISO 9001:2015 certification.
Load capacities
The table below shows the allowable loads for the WRB-40 400x400, depending on the span. The distributed load is expressed in kg/m, the point load in kg.
| Span (m) | Distributed load (kg/m) | Point load (kg) |
|---|---|---|
| 3 | 936 | 718 |
| 4 | 732 | 680 |
| 5 | 465 | 644 |
| 6 | 320 | 612 |
| 7 | 232 | 585 |
| 8 | 176 | 560 |
These values are given as a guide and must be validated by a structural calculation according to your configuration.
How to choose the section and length?
The choice depends on the span, load, and dimensions. For an application requiring a larger section, other models are available:
- WRB-30 300*300: for short spans (3 to 8 m).
- WRB-4060 400*600: rectangular section for greater rigidity.
- WRB-45 450*450: for spans up to 10 m.
- WRB-50 500*500: for higher loads.
- WRB-5060 500*600: with 30x2 mm bracing tube.
- WRB-5276 520*760 and WRB-6076 600*760: for long spans and heavy loads.
Standard lengths range from 50 cm to 400 cm. For longer spans, several elements can be assembled. Consult the technical data sheets for the load capacities of each model.
Materials and manufacturing
All WRB trusses are made of 6082/6061-T6 aluminum alloy, recognized for its excellent strength-to-weight ratio and corrosion resistance. The main and secondary tubes are 50x3 mm and 50x2 mm, ensuring optimal rigidity. The end fittings are precisely machined for safe assembly.
Typical applications
- Stage and podium structures
- Gantries and lighting bridges
- Supports for LED screens and sound systems
- Sports and cultural events
- Exhibitions and trade shows
Purchasing advice
When buying bolt trusses, check:
- Certificates: TÜV Rheinland and ISO 9001:2015 guarantee compliance.
- Load tables: ensure the capacities match your use.
- Compatibility: the end fittings must be compatible with your existing structures.
- Length: choose suitable lengths to minimize assemblies.
- Supplier: a direct manufacturer like us offers technical support.
FAQ
Q: What is the difference between a bolt truss and a quick-connect truss? A: The bolt truss offers greater rigidity and better vibration resistance, but requires tools for assembly. The quick-connect truss is faster to assemble but less rigid.
Q: Can I use the WRB-40 400x400 for a 10-meter span? A: No, the load table for the WRB-40 stops at 8 meters. For longer spans, consult models such as the WRB-45 or WRB-50.
Q: Are WRB trusses certified? A: Yes, our trusses are tested by TÜV Rheinland and our factory is ISO 9001:2015 certified.
Q: Do you offer custom lengths? A: We manufacture standard lengths from 50 cm to 400 cm. For specific needs, contact our technical team.
Conclusion
The WRB 400x400 bolt truss is a reliable solution for many event applications. By understanding its technical data sheet and load capacities, you can choose the right model for your project. For more information, visit the product page for the WRB-40 400*400 or contact us for a quote.