Seam Welding Machine for Continuous and Sealed Joints
HAIFEI seam welding machines use rotating wheel electrodes to apply pressure and welding current along an overlapping joint. The process creates a series of overlapping weld nuggets that can form a continuous, airtight or watertight seam.
Our resistance seam welding machines are configured for fuel tanks, stainless-steel components, corrugated pipes, heat shields and other sheet-metal parts. Machine selection is based on the material, thickness, weld path, sealing requirement and production output rather than rated capacity alone.
Customers can send workpiece drawings or samples for welding evaluation, tooling design and machine configuration.
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On this page, seam welding refers specifically to resistance seam welding with rotating wheel electrodes. It does not refer to MIG, TIG, plasma or laser seam welding.
What Is Seam Welding?
Seam welding is a resistance welding process in which rotating wheel electrodes apply pressure and electrical current while the workpiece or welding head moves along the joint. The resulting weld nuggets overlap to form a continuous or intermittent seam.
Resistance seam welding is commonly selected for sheet-metal components that require:
- Continuous weld integrity;
- Airtight or watertight joints;
- Repeatable welding along a defined path;
- Higher production efficiency than individual spot welding;
- Integration with automatic loading and welding systems.
Which Seam Welding Machine Configuration Do You Need?
| Configuration | Suitable Workpieces | Main Selection Factors |
|---|---|---|
| Longitudinal seam welder | Pipes, cylinders and straight sheet joints | Weld length, throat depth and workpiece support |
| Circumferential seam welder | Tanks, covers and round components | Diameter, rotation method and weld position |
| Continuous seam welding | Components requiring a sealed seam | Material, heat input and leak-test requirement |
| Intermittent seam welding | Parts not requiring a fully continuous seam | Nugget spacing, speed and production output |
| AC seam welder | Conventional steel sheet applications | Material, thickness and available power |
| MFDC seam welder | Applications requiring programmable control | Current control, repeatability and automation |
Final configuration should be confirmed from the workpiece drawing, representative samples and acceptance criteria. Rated kVA should not be used as the only selection basis.
Proven Seam Welding Applications
Motorcycle and Automotive Fuel Tanks
Dedicated tooling supports the tank while the wheel electrodes follow the overlapping joint. The tank profile, material, sheet thickness and leak-testing method must be confirmed before machine design.
01
Dishwasher Inner Tubs
Stainless-steel inner tubs require stable positioning and controlled heat input along the formed joint. The machine configuration is based on the tub dimensions, weld position and sealing requirement.
02
Corrugated Pipes
Longitudinal seam welding of corrugated pipes requires workpiece support that maintains joint alignment throughout the complete weld length.
03
Automotive Heat Shields
Thin formed sheets require controlled current, wheel force and travel speed to reduce burning, excessive indentation and deformation.
04
Shock Absorber Cylinders
Longitudinal or circumferential configurations can be designed according to the cylinder structure and required sealing method.
05
Information Required for Seam Welder Selection
| Customer Information | Used to Confirm |
|---|---|
| Material and coating | Welding power and electrode configuration |
| Sheet thickness | Current, pressure and speed range |
| Workpiece drawing | Machine structure and fixture |
| Straight or circular seam | Longitudinal or circumferential configuration |
| Weld length or diameter | Travel range and equipment dimensions |
| Airtight or watertight requirement | Process and inspection method |
| Required output | Manual, semi-automatic or automatic loading |
| Available utilities | Power, air and cooling-water requirements |
Send Your Drawing for Evaluation
Sample Testing and Custom Configuration
HAIFEI can review customer drawings and conduct sample welding where applicable. The evaluation may cover workpiece positioning, joint design, welding feasibility, seam appearance, strength and sealing requirements.
Based on the test and production requirements, the machine can be configured with dedicated wheel electrodes, workpiece fixtures, AC or MFDC welding power, programmable controls and automatic loading or positioning equipment.
Why Choose Haifei as Your Seam Welding Machine Manufacturer?
Application-Based Machine Design
We recommend equipment according to the material, thickness, seam direction, workpiece structure and production target. This helps customers avoid selecting a machine that does not match the actual part.
Customized Fixtures and Electrode Wheels
Fixtures and electrode wheels are critical to welding stability. HAIFEI can design these components around the customer’s drawing and sample rather than relying only on a standard machine platform.
In-House Welding Tests
Where suitable samples are available, our engineers can carry out welding trials and evaluate the joint before completing the final machine design.
Factory Manufacturing and Inspection
The machine is assembled and tested at the HAIFEI factory. Customers may request test records, photos or operating videos before shipment.
Installation and Operator Training
We provide operation manuals and equipment installation and training videos. Customers can also arrange training at the Haifei factory.
Depending on the agreed project scope, on-site installation and training can be provided by Haifei engineers.
Remote Technical Support
If an operating issue occurs, customers can send photos or videos to our service team. Our engineers can provide remote video guidance to help check machine settings, operating procedures and common faults.
FAQ About Seam Welding Machine
Q: What is a seam welding machine used for?
Q: What is the difference between spot welding and seam welding?
Q: Can one seam welding machine weld every product?
Q: Can HAIFEI test my workpiece before I order?
Q: Can you provide an automatic seam welding machine?
Q: Can the machine weld stainless steel?
Get Your Seam Welding Solution
Not sure which seam welding machine is suitable for your product?
Send us your material type, product drawing, thickness, welding length and production requirement. Haifei will recommend the most suitable seam welding solution and configuration for your application.
Get Seam Welding Machine Recommendation
Wuxi Haifei Intelligent Equipment Co., Limited is well-known as one of the leading seam welding machine manufacturers and suppliers in China. Please rest assured to buy high quality seam welding machine made in China here from our factory. For price consultation, contact us.
