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Chromium (VI)-free passivations for direct use in the quench tank or cooling bath
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Smart additives to increase bath life or improve efficiency
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Products that meet international quality standards such as Qualisteelcoat and GSB
AD Chemicals supplies a range of products for passivation of General galvanizing (HDG) and pre-treatment prior to coating (DUPLEX). Next to that it offers specialty additives to assist the galvanizing process.
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Sustainable Passivations and Additives for Hot-Dip Galvanizing (HDG)
AD Chemicals offers a comprehensive product range of chromium(VI)-free passivations and process additives for the hot-dip galvanizing (HDG) industry and pre-treatment prior to coating (DUPLEX systems). These solutions are engineered to meet stringent industry requirements and support both functional and aesthetic performance.
Post-Galvanizing Passivation
Our chromium-free passivation products are suitable for direct application in the quench or cooling bath, forming a uniform protective layer on galvanized surfaces. These treatments enhance corrosion resistance and are sustainable, cost-efficient, and fully compliant with international standards such as Qualisteelcoat and GSB. AD Chemicals also offers customized passivation solutions tailored to specific substrates and process parameters.
Additives for Process Optimization
To improve bath efficiency and extend operational life, AD Chemicals provides a series of smart process additives, including:
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Degreasing agents
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Pickling and cleaning additives
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Inhibitors for bath stabilization
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Specialized formulations for zinc alloys
These additives support a more stable and efficient galvanizing process, ensuring consistent high-quality surface results.
Paint Strippers for Hot-Dip Galvanized Steel
AD Chemicals supplies a wide portfolio of paint strippers formulated to remove coatings and organic residues from galvanized surfaces. The range includes both cold (room temperature) and hot stripping products, as well as methylene chloride-free alternatives. Whether you’re looking for a traditional high-performance stripper or an environmentally friendly option, AD offers a reliable solution.
Technical Expertise and Tailored Solutions
With over 40 years of experience in surface treatment and a dedicated R&D team, AD Chemicals delivers customized solutions for every stage of your galvanizing or pre-treatment process. From lab-scale validation to full-scale production, we work closely with customers to optimize performance and meet industry demands.
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Passivation HDG
Passivation products of AD are sustainable (free of chrome-6), economic and effective in use. If needed AD Chemicals can tailor the passivation requirements to the specific substrate and application process of a customer.
Pretreatment HDG
AD Chemicals has developed an advanced pre-treatment process specifically designed to meet the high demands of companies working with hot-dip galvanized (HDG) steel and zinc alloys. This solution delivers reliable performance in corrosion protection and paint adhesion, while aligning with modern sustainability and quality standards.
Specialty additives
AD Chemicals has the perfect product for every step in the hot-dip galvanising process. The range of products includes degreasing agents, cleaning/etch additives, inhibitors and other pickling additives.