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Laser Welding Galvanized Steel

Adopting a new generation laser generator, equipped with our company's developed swing welding head. This machine fills the gap in handheld welding. It has the advantages of simple operation, beautiful weld seams, and fast welding speed. It is suitable for welding metal materials such as aluminum alloy plates, stainless steel plates, iron plates, and galvanized plates, and can replace traditional processes such as argon arc welding and arc welding.
Product Model: ST-FW1500H/ST-FW2000H/ST-FW3000H
Laser power: 1500W/2000W/3000W
Single maximum welding thickness: 0.5-8mm

Details        Product Parameters        Samples       Video

laser welding galvanized steel features-Suntop

Features of laser welding galvanized steel

1. Multi-purpose, equipped with versatile nozzles to meet welding, cutting, cleaning, and other functions.

2. Independently developed handheld welding torch, equipped with various safety alarm devices, easy and flexible to operate.

3. Uses infrared positioning to verify the position of the welding torch, ensuring more accurate welding positions, smooth and beautiful welds, easy for polishing, and no need for post-welding treatment or only simple treatment.

4. The machine has multiple safety alarm functions. The welding copper nozzle's trigger switch is only effective when it touches the metal and securely clamps the metal sheet. The welding copper nozzle will automatically lock the light after moving away from the workpiece. The machine has high safety to ensure the absolute safety of operators during work.

5. Suntop's patented technology of water circulation protection system and auxiliary gas detection effectively prolongs the service life of the laser lens and prevents damage to optical components caused by improper operation.

Details of laser welding galvanized steel

1. Laser welding head

Light weight only 0.8KG, flexible and convenient to weld any shape of metal parts, adjustable welding seam width, can be 10 meters long distance welding. Equipped with safety temperature monitoring system.

2. Operation interface

Multi-language intelligent control panel, flexible adjustment of welding parameters, multi-group welding parameter library, light output cumulative timing, etc.

3. Automatic wire feeding system

Touch screen design, automatic wire filling, fully digital design, support 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm diameter stainless steel and aluminum wire.

4. Laser Source

We use customized minimum 20um core diameter fiber for deeper penetration, laser life up to 100,000 hours, maintenance-free, with Bluetooth capability.

5. Water Chiller

Double cycle water cooling makes the laser source and welding head cooling better, temperature control sensor adopts imported brand.

6. Welding connection fiber optic

10 meters long fiber optic cable with built-in design effectively avoids damage to the fiber and problems caused by moisture, which greatly increases the service life of the laser components.

laser welding galvanized steel detail-Suntop

Advantages of laser welding galvanized steel

● The new generation integrated cabinet integrates laser, chiller, software control, and other components, with advantages such as small footprint, easy mobility, and strong functionality.

● The handheld swing welding head is equipped with 5-10 meters of original fiber optic cable, providing flexibility and convenience.

● The handheld operation mode, equipped with a dedicated laser processing head, allows for welding of any part of the workpiece at any angle.

● Compatible with various laser sources, suitable for various process requirements of workpieces, achieving one-time forming with minimal deformation, meeting high-quality product requirements.

● The weld seam is aesthetically pleasing, without scars or discoloration, and does not require subsequent polishing.

● The welding is firm, and the weld seam strength reaches or even exceeds that of the base material itself.

● Suitable for butt welding, lap welding, inside and outside corner welding, arc welding, irregular shape welding, etc.

● The entire equipment has strong functionality and meets ergonomic design, suitable for various working environment scenarios.

● Exclusive laser operation protection function ensures the safety of operators during work.

● Simple and easy to learn operation, with low technical requirements for operators, resulting in reduced labor costs.

Other optional functions

Cleaning function

By replacing the laser nozzle and cleaning lens, the material surface cleaning function can be achieved, effectively removing rust, oxide layers, oil stains, etc. from the material surface without damaging its characteristics. It has the characteristic of non-contact and does not require cleaning solution, which can replace professional cleaning equipment.

laser welding galvanized steel cleaning-Suntop

Cutting function

It can perform simple cutting, and welding and cutting can be freely switched by simply changing the welding copper nozzle to the cutting copper nozzle, which is very convenient.

It can cut metal sheets such as stainless steel, carbon steel, aluminum, aluminum alloy, and iron, with a maximum cutting thickness of about 2mm.

laser welding galvanized steel cutting-Suntop

Welding seam cleaning function

It can effectively remove impurities such as oxides, welding slag, oil stains, and dust generated during the welding process, making the weld surface clean. This not only helps improve the quality of the weld, but also enhances the strength and appearance of the weld. Laser cleaning has high precision and controllability, and can thoroughly clean the weld surface without damaging the base material.

laser welding galvanized steel welding seam cleaning-Suntop

Single side weld thickness

Maximum melting




Stainless steel   (mm)




Mild steel (mm)




Aluminum (mm)




Brass/copper (mm)




Galvanized sheet   (mm)




Iron (mm)




Remark: Double weld thickness can be achieved if the material is welded from both sides in two times.

Welding method

There are various welding methods to choose from, allowing for welding at any angle, including overlay welding, butt welding, vertical welding, fillet welding, inside corner welding, outside corner welding, etc. These methods can be used for welding various workpieces, including complex welds and irregularly shaped workpieces, especially larger ones.

laser welding galvanized steel welding method-Suntop

Application materials

It can be used for welding stainless steel, carbon steel, copper, aluminum, gold, chromium, silver, titanium, nickel and other metals or alloys. It can also be used for various welding between different materials, including copper – brass, titanium-molybdenum, titanium- gold, nickel-copper, etc.

Application industry

Widely used in sheet metal processing, chassis, water tanks, distribution boxes and other cabinets, door and window guardrails, advertising signs, battery components, steel furniture, electronic appliances, metal molds, auto parts, instruments, mobile communications, medical equipment and other industries.

Parameters of laser welding galvanized steel









Welding   gun weight




Max.   welding thickness (mm)




Max.   welding seam width (mm)




Laser type

Fiber laser   (Suntop custom 20um welding exclusive)

Laser detection method

Bluetooth wireless   connection, Mobile App Monitoring

Control panel language support

English,   Spanish, German, French, Turkish, Italian, Russian,

Vietnamese, Thai, Korean, Japanese, etc.

Laser wavelength (nm)


Suitable welding materials

Carbon   steel, stainless steel, aluminum, galvanized sheet metal,

brass, iron and other metal materials

Adapted welding methods

Spot   welding, overlap welding, splice welding, fillet welding,

lap welding etc.

Laser power adjustment range (%)


Cooling method

Advanced   water-cooling, dual temperature control and automatic


Welding aiming preview method

Built-in Red-Light pointer

Protection systems

Air pressure sensor and solenoid valve   control

Length of fiber optic cable (meter)

Standard 10 (can be customized 15)

Welding shielding gas

Argon or nitrogen (air pressure approx. 6-8   bar)

Working environment

Temperature 5-45 °C /humidity 10-90%

Other   optional support functions

Cleaning   + cutting

Cleaning   + cutting

Cleaning   + cutting + weld bead cleaning

Max.   Cutting thickness (mm)




Max. cleaning width (mm)




Automatic wire   feeder type

(Universal   with TIG wire)

Single wire feed

Single wire feed

Support both the double wire feed and single wire feed

Solid wire type (SS, Iron, AL, Brass)

0.8, 1.0, 1.2, 1.6

0.8, 1.0, 1.2, 1.6

0.8, 1.0, 1.2, 1.6, 2.0, 2.5

Temperature control monitoring alarm




Main machine consumables

Laser protective lenes, welding nozzles, welding wires

Machine size (MM)




Machine net weight (KG)




Power supply requirement

110V / 220V±10%, single phase

380V±10%, three phase

Total power consumption (Maximum)




laser welding galvanized steel samples-Suntop





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