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Siam Steel Galvanizing Co., Ltd.
Established in 1991, Siam Steel Galvanizing Co., Ltd. is the result of a joint venture between Siam Steel Gratings Co., Ltd.—the largest steel gratings manufacturer in Thailand—and Progress Manufacturing Pty. Ltd., a pioneer of hot-dip galvanizing in Singapore.
To expand our production capacity and meet growing demand, we established our sister company, Rayong Galvanizing Co., Ltd. (RGC), in 1996. Located in Eastern Economic Corridor (EEC), RGC shares our commitment to international standards and operational excellence.
We specialize in general galvanizing services using the hot-dip galvanizing process, providing durable corrosion protection for a wide range of steel components. In addition to large-scale structural items, we also offer centrifuge galvanizing—a process designed for small parts and fittings that require clean, uniform coatings.
Over the years, we have built a solid reputation for high-quality galvanizing services, trusted by clients in both local and international markets, including major infrastructure contractors and government agencies.
Our facilities are equipped with advanced galvanizing systems and large-scale zinc kettle baths imported from Australia—among the largest in Thailand—enabling us to process long steel members in compliance with rigorous international standards such as ASTM A123, BS 729, AS/NZS 4680, JIS H 8641, and BS EN ISO 1461.
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)
Vision
To be the leading galvanizing service provider in Southeast Asia, recognized for excellence, innovation, and sustainability in corrosion protection solutions.
Mission
Provide high-performance galvanizing solutions with precision, efficiency, and reliability.
Leverage cutting-edge technology and large-capacity facilities to meet industrial-scale demands.
Ensure compliance with international standards while prioritizing sustainability and safety.
Support clients with consistent quality, technical expertise, and responsive service.
Our Promise
At Siam Steel Galvanizing, we promise unmatched quality, on-time delivery, and long-lasting protection. With cutting-edge technology and expert craftsmanship, we ensure every project meets the highest standards of durability, safety, and performance—so our clients can build with confidence.
Growth Plan
Capacity & Technology Expansion
Invest in advanced galvanizing facilities, upgrade to automated systems, and implement AI-driven quality control.
Market Expansion
Strengthen domestic and international presence, form strategic partnerships, and offer customized galvanizing solutions.
Sustainability Commitment
Adopt eco-friendly processes, enhance resource efficiency, and achieve global environmental certifications.
Customer-Centric Innovation
Improve digital services, develop advanced anti-corrosion coatings, and enhance after-sales support.
Certifications / Quality Standards
At Siam Steel Galvanizing, quality is at the core of everything we do. Our operations comply with international standards, including ISO 9001, and we adhere strictly to ASTM A123 specifications. These certifications reflect our dedication to consistent quality, process control, and customer satisfaction across every project.
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.
