Metal Pre-treatment Chemicals - Metal pre-treatment chemicals prepare metal surfaces for processes like painting, coating, or welding. They clean, protect, and enhance adhesion, ensuring durability and preventing corrosion. Below are key types of pre-treatment chemicals and their uses: 1. Cleaning Agents - Used to remove dirt, grease, oil, and other contaminants. 1. Alkaline Cleaners: Effective for removing oil and grease. Examples: Caustic soda, sodium metasilicate. 2. Acidic Cleaners: Remove rust, scale, and oxide layers. Examples: Phosphoric acid, hydrochloric acid. 2. Degreasers - Break down oil, grease, and other hydrocarbon contaminants. 1. Water-Based Degreasers: Eco-friendly and safe for various metals. Examples: Citrate-based or phosphate-free formulations. 2. Solvent-Based Degreasers: For heavy-duty cleaning. Examples: Trichloroethylene, mineral spirits. # Metal Pre-treatment Chemicals Manufacturer.