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No. 538, Xingfu Road, Ind. East Zone, Chengdu, Sichuan, China
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Product Introduction:
In stainless steel duct manufacturing, circumferential joints are an important stage after the workpiece has been formed. The seam welding machine can be integrated into the production process as a dedicated seam welding station: once the component has completed the preceding forming operation, it is placed in the welding area and manually rotated so that the complete circular joint passes through the electrode zone while the machine performs the welding operation. This arrangement separates circumferential seam welding from general manual welding and helps establish a clearer production workflow. With its pneumatic mechanism, dedicated electrode wheels, welding controller and cooling system, the machine is well suited as a specialized welding station for stainless steel ducts and formed sheet-metal components.
Features:
1.Vertical Machine Layout: The machine adopts a vertical industrial configuration, with the main welding assembly positioned in the upper-middle section.
2.Substantial Base Structure: A wide steel base provides a solid mounting structure for the complete machine.
3.Centralized Upper and Lower Electrodes: The copper electrode wheels are positioned in the core working area to form a compact welding unit.
4.Top-Mounted Pneumatic Actuator: A visible pneumatic cylinder and air-line assembly are installed at the top and connected to the electrode mechanism.
5.Independent Side Control Cabinet: The electrical control cabinet is mounted separately on the side, creating a clear machine layout.
6.Stainless Steel Water Tray: A large stainless steel water tray is installed at the lower section to support the machine's water and cooling system.
Welding Test:



Welding Workpiece: Suitable for stainless steel ducts, straight tubes, reducers, elbows and other cylindrical workpieces with circumferential seams.
Detailed Images:

Upper & Lower Electrode Wheels: The upper and lower copper electrode wheels form the main welding contact area as the duct rotates through the welding position.

Upper Pneumatic Actuator: The top pneumatic cylinder drives the welding assembly vertically and provides the required movement for the upper electrode wheel.

Gas Storage Tanks: Stores and buffers compressed air to provide a stable air supply for the pneumatic system.

Water Circuit Components: Equipped with flow monitors, water pipes, valves and fittings for monitoring and controlling the cooling water circulation.
General Structures:


Technical Parameters:
|
Model Item |
Unit
|
FN-80-H
|
FN-100-H
|
FN-160-H
|
FN-100-E
|
FN-160-E
|
|
Rated power |
KVA
|
80
|
100
|
160
|
100
|
160
|
|
Voltage input |
V
|
380
|
380
|
380
|
380 |
380
|
|
Frequency |
Hz
|
50
|
50
|
50
|
50
|
50
|
|
Max. short circuit current |
KA
|
26
|
30
|
40
|
30
|
40
|
|
Working stroke |
mm |
100 |
100
|
100 |
100 |
100
|
|
Welding efficiency |
m/min
|
0.7-3.9
|
0.7-3.9
|
0.7-3.9
|
0.7-3.9
|
0.7-3.9
|
|
Max. force |
N
|
6000
|
6000
|
7800
|
6000
|
7800
|
|
Max. welding capacity |
mm
|
1.2+1.2
|
1.5+1.5
|
2.0+2.0
|
1.5+1.5
|
2.0+2.0
|
|
Motor Power |
W
|
550
|
750
|
750
|
750
|
400
|
|
Cooling consumption |
L/min
|
8
|
8
|
10
|
8
|
10
|
|
Weight
|
Kg
|
380
|
510
|
630
|
530
|
700
|
Scene Images:


Multi Types of Seam Welders:
Ring Seam Welding Machine
The seam welding machine is designed for circumferential seam welding of corrugated stainless steel pipe fittings, widely used in appliance connectors such as dishwashers and washing machines. It features automatic clamping and rotary welding, offering stable welding, easy operation, and efficient performance for continuous mass production.
Automatic Filter Drum Longitudinal Seam Welding Machine
The seam welding machine is designed for automatic rolling and longitudinal seam welding of low-carbon steel filter drums. Suitable for 0.5–1.5 mm steel sheets, it features pneumatic pressurization and servo-driven roller welding for stable, efficient, and automated production.
Horizontal Automatic Seam Welding Machine
The seam welder is mainly designed for welding shock absorbers or piston cylinder tubes. It is an automatic welding equipment used for welding circular and annular welds, widely used for welding various metal materials with sealing requirements, including stainless steel, low-alloy steel, aluminum, iron, and other alloys. It mainly completes welding by rotating the electrode to drive the workpiece to rotate.
FAQ:
1. When can you arrange shippment?
The shippment is 15 days after getting deopsit, but customized machines should be more than 25 days.









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