How to weld galvanized steel?

As a professional galvanized steel supplier,we fully understand the critical impact of welding processes on product quality. To address the unique challenges of welding galvanized steel, we not only provide high-quality customized galvanized steel products but also offer comprehensive technical support and solutions.

一、Why Choose Our Galvanized Steel Products?

1、Customized Zinc Coating Treatment

Pre-treatment of specific areas with partial zinc coating removal based on your welding requirements

Multiple zinc coating thickness options (80-275g/m²) to optimize weldability

Special pre-treatment services available (e.g., zinc-free zones pre-reserved for welding areas)

2、Material Quality Assurance

Premium low-carbon steel substrate with excellent welding characteristics

Strictly controlled zinc bath composition to minimize weld porosity

Full-process quality control ensuring consistent batch-to-batch performance

二、 Recommended Welding Solutions

1、Pre-Treatment Options (Customizable)

Mechanical Treatment Solutions
Pre-grinding service (customizable grinding areas and depths)
Laser zinc removal (±0.5mm precision, ideal for precision components)
Sandblasting pre-treatment (Sa2.5 cleanliness grade)

Chemical Treatment Solutions
Acid pickling & passivation (weld zone reservation available)
Eco-friendly zinc coating conversion (creates a weld-friendly surface)

2、Recommended Welding Processes

3、Compatibility of Special Welding Materials
(1) Selection of welding rods or electrodes
Low smoke dust welding wire (FCW-Zn series)
Welding wire with high silicon bronze content (for various metal connections)
Special galvanized steel welding rods (J421X with special formulation)
(2) Optimization of shielding gas

Ternary mixed gas (Ar + CO₂ + He)

Patented shielding gas to prevent porosity (can reduce porosity by 60%)
4. Benefits of personalized services
(1) Material optimization
Production of special welded galvanized steel plates (better zinc layer structure)
Provided composite plates (partially stainless steel composite materials)
(2) Support for process packages
Welding process skills service (PQR)
Provide WPS welding process specifications
(3) Quality assurance
Provide welding test plates for each batch
Material certificates should include data on welding suitability