ST- Series

Product Description

Features:

• Patented mechanical synchronization of the working tables; a novelty to achieve a homogeneous application of pressure in the weld seam area
• Process forces regulated via proportional valve
• Siemens S7 control system with 5.7" full graphics touch screen
• Machine design based on a sturdy welded framework construction. All of the machines components are matched to the relevant load case to ensure the top quality welding of plastics
• Welding tables in composite construction to eliminate torsion stresses and provide stiffness
• Pneumatics equipped with maintenance friendly valve clusters of the latest generation
• Integrated and highly dynamic electronic heating element temperature control
• Flexibility to end or stop the process times during the welding cycle
• Robust and in the clamping bar integrated non-rotating clamping feet
• High quantity of decoupled and anti-twist protected clamping feet in order to match perfectly to each sheet length
• Highly flexible suspension of clamping feet for secure fixation of sheet adjacent to the welding area
• Interpretation of the max. machines forces on an 8 bar compressed air supply
• Ergonomic cleaning position for the heating sword
• Ergonomic working table height

Range of Application: Range of Application Manufacture of reservoirs, tanks and containers, manufacture of plastic apparatus, pipeline construction, ventilation systems, serial welding, water treatment systems, scrubbers, environmental technology, swimming pools, transport and logistics.

Materials: PE, PP, PVDF and other weldable thermoplastic material.

Technical Data	ST 225	ST 325	ST 425
Machine Length (mm):	3,550	4,550	5,550
Machine Width (mm):	800	800	800
Machine Height (mm):	1,100	1,100	1,100
Total Weight (kg):	2,150	2,700	3,300
Max. working width (mm):	2,050	3,050	4,050
Sheet Thickness to be welded (mm):
PE [0.15 N/mm	3 to 25	3 to 25	3 to 25
PP [0.10 N/mm	3 to 25	3 to 25	3 to 25
PVDF [0.10 N/mm	3 to 25	3 to 25	3 to 25
PVC-C at 6 bar [0.50 N/mm	3 to 7.50	3 to 7.50	3 to 7.50
PVC-U at 6 bar [0.60 N/mm	3 to 6.25	3 to 6.25	3 to 6.25
Min. channel cross section inside dimension (W x H in mm)	270 x 250	270 x 250	270 x 250
Min. cylinder diameter (mm)	350	350	350
Power Supply Standard:	230 V 1/N/PE 50/60 Hz	230 V 1/N/PE 50/60 Hz
Power supply with option height adjustable clamping beams:	230/400V 3/N/PE 50/60 Hz	230/400V 3/N/PE 50/60 Hz	230/400V 3/N/PE 50/60 Hz
Power consumption standard (kW):	2.5	3.5	4.5
Power consumption with option height adjustable clamping beams (kW):	4.5	6.5	8.5
Compressed air connection (bar):	8	8	8
Clamping force at full load pressure in kN:	15.4	28	37.5
Welding Force:
Min. Table force (N):	600	700	700
Max. Table force (at 8 bar in kN):	7.7	11.5	15.5
Heating element standard Teflon coated T max = 260 C (W x H in mm):	15 x 50	15 x 50	15 x 50
Heating element with option height adjustable clamping beams Teflon coated, T max = 260 C (B x H in mm):	20 x 80	20 x 80	20 x 80

Versatile Welding Capability

The ST-Series supports manual metal arc welding using all electrode types with rod diameters ranging from 2.5mm to 6.0mm. Its adjustable output current (180A to 400A) allows for seamless adaptation to different materials and thicknesses, catering to a wide range of welding tasks in both industrial and maintenance settings.


Advanced Controls for Precision

Equipped with advanced hot start and arc force adjustment, the ST-Series offers superior control over the arc characteristics, improving ignition and stability during welding. The integrated digital meter display provides real-time monitoring for precise and reliable operation.


Built for Durability & Safety

Constructed from robust steel and featuring IP21S protection class, the ST-Series safeguards against dust and incidental water exposure. Efficient fan cooling and insulation grade F ensure long-term reliability, while cable lengths up to 5m enhance operator convenience.