# INORGANIC SHOP PRIMER RAINBOW PAINTS ## Product Code No.1021 (SP-09) ## Type Two-component transparent shop primer composed of silicate ester, matched with special waterborne hardener. ## Application Pre-fabrication anti-rust primer for sandblasted steel structures such as iron frames, ships and offshore facilities. ## Properties 1. Excellent anti-corrosion and weather resistance 2. Good heat resistance with minimal burn scar area during welding & cutting 3. Superior EPM operational performance 4. Improved fusion and welding compatibility 5. Excellent workability 6. Minimal zinc fume generated during welding for safe operation 7. Compatible for overcoating with all types of topcoats 8. Two-component design prevents zinc dust generation during coating operations ## Specification Data - Gloss: Flat - Color: Grey, Grey-Brown - Flash Point: Above 14°C (57°F) (mixed paint) - Specific Gravity: ≥1.4 kg/L (mixed paint) - Viscosity: 1HS CUP 8~12 seconds (mixed paint, 25°C) - Drying Time - Tack-free: Within 2 minutes (25°C) - Hard dry: Within 5 minutes (25°C) - Film Thickness: Wet film 50 μm, Dry film 15 μm - Theoretical Coverage: 18.5 ㎡/L, 13.2 ㎡/kg - Mix Ratio: Base : Hardener = 30 : 4 (or as marked on bucket) - Volume Solids: Above 28% (mixed paint) - Pot Life: 24 hours (mixed at 25°C) - Required Surface Treatment: SIS Sa 2½ - Thinner: No.1019 Inorganic Zinc Shop Primer Thinner (SP-14) - Thinner Dosage: 0~10% (by weight, excluding tool cleaning) - Compatible Topcoats: Chlorinated rubber coatings, Rainbow full series paints, Beautiful Exterior Wall Paint - Storage Stability: Minimum 6 months under normal storage ## Application Methods Airless Spray ## Airless Spray Parameters - Nozzle size: 0.017"~0.021" - Distance between gun and workpiece: 30~50CM - Secondary air pressure: 3~5kg/cm² - Pressure ratio: ≥33:1 ## Construction Precautions ⚠️ 1. Fully stir hardener into base component; keep stirring during application to prevent settlement. 2. Clean all tools thoroughly after use. 3. Construction permitted at 0~40°C and relative humidity 40~95%. 4. Blast steel surfaces to SIS Sa 2½ standard with proper surface roughness (approx. 45~65μm). 5. Maintain adequate ventilation during construction inside tanks or pits. ## Note All data provided in this product datasheet are derived from internal laboratory test results for construction design reference only. Actual performance varies subject to different construction environments. This document does not constitute any legally binding warranty or statement from the manufacturer. Contact our technical department for clarification of any uncertainties.