A Stage Truss System is not a single Truss , but a "collaborative system" composed of truss main bodies, connection accessories, support structures, and functional attachments. It can not only support equipment such as lighting, sound systems, and backdrops, but also be assembled into different shapes Aluminum Alloy Stage Truss according to stage design. As the "core framework" of stage construction, whether for small roadshows or large-scale concerts, choosing the right system and properly assembling it is essential to balance safety, efficiency, and stage effects. Choose the System Based on "Scenario Needs": 3 Mainstream Systems—Don’t Follow Trends Blindly
There is no "one-size-fits-all" Stage Truss system. The choice depends on stage scale, frequency of use, and equipment weight. The three most common types are as follows: 1. Aluminum Alloy Quick-Assembly Truss System System (Top Choice for Temporary
Core Features: Lightweight, fast to assemble, flexible—operable by 1-2 people
The main truss is made of 6061-T6 aluminum alloy, with a single section weighing 8–15 kg (for 300×300 mm specifications). Connection is done via "spring-loaded pins + connection plates," no tools required—one section can be connected in 30 seconds, and small to medium-sized stages Backdrop Truss for Photo Booths can be fully assembled in 2–3 hours. Load Capacity & Applicable Scenarios:
Load Capacity: 300–800 kg per section Background Truss for Stage Design, capable of supporting standard lighting (PAR lights, moving head lights), backdrop prints, and small LED screens (under 50 inches). Scenarios: Temporary performances (roadshows, market stages), small to medium-sized events (corporate annual meetings, birthday parties), and short-term outdoor celebrations (lawn weddings, holiday galas).
Advantages: No welding or hoisting needed. After use, it can be disassembled into individual sections for storage and is easy to transport Adjustable Background Truss. Its surface can be spray-painted Lightweight Backdrop Truss System for a sleek look, making it suitable for scenarios requiring "quick implementation." Core Features: Stable, rigid, high load capacity—suitable for long-term use
The main truss is made of Q235 hot-dip galvanized steel (rust-resistant), with a single section weighing 15–25 kg Overhead Stage Truss System. Connection is via "stainless steel bolts + welding"; once installed, it is rarely disassembled and can be fixed to the building structure (e.g., theaters, studios).
Load Capacity & Applicable Scenarios:
Load Capacity: 800–1500 kg per section (for spans of 8–15 meters), capable of supporting heavy LED screens (over 100 inches), line array sound systems, and large physical props Stage Truss Structure.
Scenarios: Permanent theater stages, TV studio stages, large outdoor fixed billboards (scenic areas/malls), and equipment racks in factory workshops.
Just a heads-up: If you’re using it outdoors, hot-dip galvanizing is a must Durable Overhead Truss. And if it’s in a coastal area, you’ll also have to add an extra anti-salt spray coating.However, it can last 5–10 years with low long-term maintenance costs.
3. Custom Shaped Truss System (Exclusive to Creative Stages)
Core Features: Can be assembled into "non-standard shapes" to meet personalized design needs
Unlike fixed "square/triangular" trusses, it is customized according to stage design (e.g., curved ceiling trusses, diamond-shaped backdrops, spiral trusses). The main body is made of aluminum alloy or steel Portable Stage Truss, with connection via "custom angle pieces + bolts." Drawings need to be created and production arranged 3–5 days in advance.
Applicable Scenarios:
Large-scale concerts (e.g., "circular ceiling trusses" in stadiums for full-stage lighting).
Themed events (e.g., "wavy backdrop trusses" for music festivals, "logo-shaped trusses" for brand launches).
Art exhibitions (e.g., "custom-shaped load-bearing trusses" for immersive installations).
Key Reminder: Before customization, clearly specify "shape dimensions + load requirements." For example, if making an 8-meter-wide curved ceiling truss, inform the manufacturer that it needs to "support 10 moving head lights + 2 layers of veils" to avoid situations where the shape looks good but lacks sufficient load capacity.
III. Avoid These 3 "Fatal Mistakes"—Even the Sturdiest System Fails with Misuse
Eighty percent of the safety of a stage truss system depends on "assembly details." Pay close attention to these 3 points:
1. Do Not "Overload"—Calculate Total Weight + Leave a Safety Margin
First, calculate the "total equipment weight": Add up the weights of all lighting, sound systems, backdrops, etc., to be hung (e.g., 10 moving head lights × 20 kg + 1 backdrop × 50 kg = total 250 kg).
Then, leave a "30% safety margin": Choose a truss with a rated load capacity ≥ 325 kg (250 kg × 1.3). Never choose a smaller specification to save money (e.g., using a truss with a rated load of 200 kg for a total weight of 250 kg, which may cause the truss to bend).
Example: For small to medium-sized stages (supporting 5 PAR lights + 1 backdrop × 30 kg), a 250×250 mm aluminum alloy quick-assembly truss (rated load 300 kg) is sufficient. For large-scale concerts (supporting 15 professional lights + 1 LED screen × 100 kg), a 400×400 mm steel truss (rated load over 800 kg) is a must.
2. Do Not "Cut Corners" on Supports—Add Them When Required
For spans over 6 meters, add "middle supports": For example, when building a 10-meter-wide ceiling truss, a vertical support column (with adjustable feet) must be added in the middle—otherwise, the truss will sag (professionally called "excessive deflection").
For outdoor spans over 8 meters, add "diagonal braces + ground anchors": Outdoor wind is strong; place 2×50 kg water-filled sandbags (or cast iron weights) next to each column. For spans over 8 meters, add guy wires (fixed to ground anchors at a 45° angle) to prevent the truss from being blown over.
For wall-mounted trusses, add "wall connections": For example, for backdrop trusses in malls, weld L-shaped connection plates to the side of the truss and fasten them to the wall with expansion bolts. This allows the wall to share part of the weight and reduce pressure on the truss.
3. Do Not "Be Careless" with Connections—Lock Pins and Tighten Bolts
Pin Connections: Push the pin all the way in, then fasten the safety lock (e.g., rotating lock tab). Never insert the pin only halfway (it may loosen due to vibration). When disassembling, unlock first, then pull out the pin—do not force it.
Bolt Connections: Use a torque wrench to tighten bolts according to the manual (usually 30–50 N·m). Do not make them too loose (causes wobbling) or too tight (may crack the holes). Check the bolts of steel trusses every 3 months (to prevent rust and seizing); for outdoor trusses, additional anti-rust oil is required.
Wuxi Zhongshengwei Metal Products Co., Ltd.
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