Product Information
| Item | Specification |
| Product Type | Aluminum Truss Sleeve Block / Tower Lifting Block |
| Brand | DragonStage |
| Truss Connection Type | Spigot Truss |
| Compatible Truss Options | 290×290mm / 390×390mm / 400×400mm |
| Sleeve Block Size Options | 500×600mm / 520×760mm / 600×760mm |
| Main Function | Tower-to-beam connection in ground-support truss systems |
| Material | Aluminum |
| Application | Roof Truss / Lighting Truss / LED Support / Ground Support Tower |
| Custom Compatibility | Available according to truss dimensions |
Product Description
The DragonStage Aluminum Spigot Truss Sleeve Block is one of the main connection components used in a modular ground-support tower system.
Its practical job is to connect the vertical tower truss with the horizontal beam truss, creating the main junction used in temporary roof, lighting, LED, and event truss structures.
In a complete ground-support system, the sleeve block works together with components such as:
For other components used in the same tower system, see Typical Tower Elements.
If you are selecting matching straight truss sections, see Standard Spigot Truss.
Aluminum Truss Tower Sleeve Block for 400*400/400*600mm
Manufactured from high-grade and lightweight aluminum which is easy for transportation and setup
Carefully crafted by certified welders,with CE and TUV and SGS certifications.
Available in many lengths for mobile entertainers, productions, nightclubs and retail stores
This durable, lightweight, brushed aluminum is both absorbs and reflects light giving your set-up a polished attractive appearance
Available Truss Compatibility
This product page currently provides sleeve block options for:
290×290mm spigot truss
390×390mm spigot truss
400×400mm spigot truss
These dimensions refer to different truss-system configurations.
However, nominal dimensions alone are not enough to guarantee compatibility.
When replacing a sleeve block or connecting truss purchased from another manufacturer, please also confirm:
This is especially important when mixing existing equipment with newly manufactured parts.
For other truss families, see Aluminum Truss.
Available Sleeve Block Sizes
The existing product options list:
500×600mm
520×760mm
600×760mm
These are different sleeve-block configurations offered on the current product page. Dragon Stage
The correct version should be selected according to the tower truss, beam truss, connector geometry, and required connection arrangement.
If you already have an existing tower system, sending us the original sleeve block measurements is preferable to selecting only from the nominal F-series or outside truss size.
What Does a Sleeve Block Do in a Ground Support Tower?
A sleeve block is not simply another corner connector.
In a typical tower system, it acts as the connection node around the vertical tower, allowing the horizontal truss grid or beam structure to be connected to the tower.
Depending on the complete system configuration, it can be used as part of the lifting arrangement that raises the horizontal truss structure along the tower during installation.
That is why this component is commonly found in:
For LED-related ground-support applications, see LED Ground Support Truss.
Why Compatibility Matters
A sleeve block sits at one of the most important interfaces in a ground-support tower system.
A unit may look similar externally but still fail to match because of differences in:
So if you already own a truss system, the correct question is not simply:
“Is this 290mm or 400mm?”
A more useful check is:
“Does this sleeve block match the actual tower and beam geometry I already have?”
This is particularly important for rental companies maintaining mixed inventories from different suppliers.
Typical Applications
This sleeve block can be used as part of:
Ground support truss systems
Aluminum roof truss towers
Concert lighting structures
LED screen support truss
Festival stage truss
Exhibition structures
Touring production systems
Replacement or expansion of existing tower systems
For related connectors and hardware, see Truss System Accessories.
Before Ordering
To confirm the correct sleeve block, please provide:
Tower truss outside size
Beam truss outside size
Spigot connector dimensions
Center-to-center tube spacing
Existing sleeve-block dimensions
Photos of the tower and horizontal beam connection
Required quantity
Whether this is for a new system or replacement of existing equipment
If possible, send a front view, side view, and close-up of the connector position.
This is much safer than selecting only by a model name.
Important Technical Note
The current product page confirms the available truss size options and sleeve-block size options, but it does not provide a verified allowable lifting load, structural load capacity, safety factor, or complete tower-system calculation for this individual product. Dragon Stage
Therefore, this product should be treated as one component within a complete truss tower system.
Its presence alone does not establish the allowable load of the entire roof, LED wall, lighting grid, or ground-support structure.
FAQ
What is this sleeve block used for?
It is used to connect horizontal beam truss to a vertical tower in a ground-support truss system.
What truss sizes are available?
The current product page lists options for 290×290mm, 390×390mm, and 400×400mm spigot truss. Dragon Stage
What sleeve block sizes are available?
The current options include 500×600mm, 520×760mm, and 600×760mm. Dragon Stage
Is a sleeve block the same as a corner block?
No. A corner block is normally a fixed truss junction. A sleeve block is specifically used around a tower as part of a ground-support connection and lifting system.
Can it be used with another manufacturer's truss?
Possibly, but compatibility should be checked first. Trusses with the same nominal outside size can still have different connector positions or tube spacing.
Can I use it as a replacement for an existing sleeve block?
Yes, but please provide the dimensions and photos of the original sleeve block and matching trusses before production.
Can different truss sizes be connected through the sleeve block?
The sleeve block can be configured for different tower and beam arrangements, but the exact connector configuration must be confirmed before manufacturing.
Does the sleeve block determine the load capacity of the whole tower?
No. Complete structural capacity depends on the tower, beams, connections, lifting system, spans, loads, and overall configuration.
What information should I send for quotation?
Please provide tower size, beam size, connector dimensions, sleeve-block dimensions, photos or drawings, and required quantity.
Why Choose DragonStage
DragonStage supplies complete Aluminum Truss systems as well as individual tower components and replacement parts.
For sleeve-block orders, especially replacement components, the important step is matching the real geometry of your existing system rather than relying only on the nominal truss name.
This helps reduce compatibility problems when customers are extending, repairing, or reconfiguring an existing ground-support system.
