Thailand’s Largest Hot-Dip Galvanizing Specialist
Unmatched Capacity. Proven Quality. Trusted Nationwide.
Siam Steel Galvanizing Co., Ltd.
Rayong Galvanizing Co., Ltd.
Established in 1991, Siam Steel Galvanizing Co., Ltd. was founded as a joint venture between Siam Steel Gratings Co., Ltd.—Thailand’s largest steel grating manufacturer—and Progress Manufacturing Pty. Ltd., a pioneer in hot-dip galvanizing based in Singapore
Capacity (Thailand’s highest hot-dip galvanizing volume)
Nationwide & Regional Reach
Strategic plants in Saraburi, Rayong, Samutprakran
Long-Term Partners (Including EPCs, utilities, and global contractors)
Why Choose Us
With over 35 years of experience and the largest galvanizing capacity in Thailand, SSG delivers industrial-grade hot-dip galvanizing with precision, speed, and nationwide reach.
Our three strategic plants, certified processes, and commitment to quality and sustainability make us the go-to partner for infrastructure, energy, construction, manufacturing, and a wide range of industrial applications.
99.95%
pure zinc
Industrial-Grade Precision & Quality
We are ISO 9001 certified and use 99.995% special high grade zinc to ensure consistent coating quality, corrosion resistance, and long-term performance.
99.95%
pure zinc
Thailand’s Largest and Most Versatile Galvanizing Capacity
With over 13,000 tons/month across three plants, we galvanize a wide variety of steel products — from small components to large industrial structures — meeting diverse industry needs with unmatched scale and reliability.
Our Facilities
With over 13,000 tons/month of galvanizing capacity across three strategic facilities in Saraburi, Samutprakran, and Rayong, SSG is equipped to serve projects of every scale. Each plant operates galvanizing baths of various sizes, allowing us to efficiently handle everything from small steel parts to large, heavy-duty structural components
— all with industrial-grade precision and nationwide reach.
Hot-Dip Galvanizing Solutions
We specialize in providing durable and reliable hot-dip galvanized solutions that protect steel from corrosion, ensuring long-lasting performance and structural integrity across a wide range of industrial applications.
Project Reference
From infrastructure and construction to energy, utilities, manufacturing, and beyond — our galvanizing services have played a vital role in a wide range of projects across Asia. Whether it’s steel bridges, transmission towers, industrial plants, or custom structural components, SSG is the trusted partner for companies seeking durability, precision, and nationwide delivery.
Sustainabillity
At SSG, sustainability is more than a goal — it’s built into our process. We follow ISO 9001-certified operations, use 99.995% special high grade zinc for long-lasting protection, and continually optimize resource efficiency to reduce waste and environmental impact.
Group of Companies
Testimonial
Provided clear guidance on hole punching and workpiece hanging, with on-time delivery as scheduled.
Provided excellent product guidance and clearly explained in-depth information, enabling customers to fully understand the details.
Demonstrated excellent customer care by providing prompt and effective responses and recommendations.
Provided excellent collaboration by updating product status post-galvanizing and supplying complete photo documentation before delivery.
Excellent service with attentive project follow-up, delivering quality work that meets established standards.
Product quality is at a very high level, meeting customer expectations effectively
Provides fast and clear service, effectively resolving issues. Deliverables are neat, accurate, and complete.
Excellent galvanizing quality with highly attractive finished products.
Our Catalog
Discover durable, high-performance galvanized solutions — explore our catalogue and find the right fit for your project.
Ready to pull the trigger? Get a quote today.
Ready to pull the trigger?
Get a quote today.
