
SL3 UNI
Universal CNC Welder with 3 Heads for Complex Angles and Crossbars
Maximum versatility for custom productions
Perfect if:
- Weld multiple components simultaneously (corners + cross members)
- Manage complex configurations with a single machine.
- Achieve high-precision welds on white, coloured, or coated profiles.
- Work on angles from 35° to 180° as well.
- Optimise cycle time through dual unit mode.
Request the technical brochure now or speak with an expert.

Maximum versatility for custom productions
The SL3 UNI is the most versatile 3-head CNC welder in the Graf Synergy range. Designed to tackle any construction combination, it allows for the simultaneous welding of 90° angles, ‘T’ joints, crosses, ‘H’ sections, and variable angles from 35° to 180°, even in combination with each other.
In just two cycles, it is possible to create a complete window with a central crossbar. The three heads operate in line, and two of them can rotate 90° to simultaneously weld both ends of a crossbar.
5 reasons to choose SL3 UNI
- Absolute versatility. Unique in handling 90° welds, ‘T’ joints, crosses, ‘H’ joints, and variable angles with the same heads.
- Dual mode. Usable as two separate welders: a single-head and a double-head.
- Advanced electronic control. Precise management of the temperatures of plates and limit knives.
- Quick Change Counter-Tool. Quick attachment/detachment system to minimise setup times.
- Maximum stability and aesthetic quality. Solid construction, continuous welding, and curb adjustment ranging from 0.2 to 2 mm to meet all aesthetic requirements.

Product Details
The SL3 UNI is the most versatile 3-head CNC welder in the Graf Synergy range. Designed to tackle any construction combination, it allows for the simultaneous welding of 90° angles, ‘T’ joints, crosses, ‘H’ joints, and variable angles from 35° to 180°, even in combination with each other.
Machine dimensions
Length: 4,000 mm
Width: 750 mm
Height: 2,350 mm
Weight: 1.200 Kg
Power supply
Installed power: 13 kW
Voltage: 400 V
Air consumption per cycle: 140 NI/min
Operating pressure: 7 bar
Operational Features
Composition: 3 Inline Heads (2 rotatable at 90°)
Welding Types: 90° angles, T-joints, crosses, H-joints, variable angles from 35° to 180°
Operating modes: combined or separate
Operators required: 1
Working dimensions
Weldable profile:
- Height: 40 – 200 mm
- Width: 40 – 130 mm (at 90°)
Optional features and available configurations
- Right head extension (L = 270 mm)
- Additional support arm for profile holders (1 per head)
- Custom-designed counter jaws (left-right clamps, horizontal/vertical)
TECHNOLOGY AND AUTOMATION
SL3 UNI is designed for high flexibility lines and special processing. The three heads, which can also be configured separately, allow for the creation of complex frames without the need for multiple machines.
The centralised electronic control allows for precise management of temperature, edge profiles, and operational sequences. The user interface and the quick-change template system make the SL3 UNI ideal for those who need to handle many construction variants in a short amount of time.
Contact us to find out if the SL3 UNI is the right solution for your production.







