PRODUCT DATA SHEET July 6, 2015 (Revision of July 6, 2015) DESCRIPTION Two-component, polyamide-cured epoxy prefabrication primer PRINCIPAL CHARACTERISTICS • Suitable for automatic application on shot blasted steel plates • Good cutting and welding properties, including MMA and gravity welding • Provides corrosion protection up to 6 months, when applied at a DFT of 22 |jm (0.9 mils) (depending on exposure conditions and blasting profile) • Fast drying properties • Can be used as a first coat in various paint systems for atmospheric exposure conditions only COLOR AND GLOSS LEVEL • Redbrown • Flat Notes: - See ADDITIONAL DATA-Curing time - See ADDITIONAL DATA - Overcoating intervals RECOMMENDED SUBSTRATE CONDITIONS AND TEMPERATURES Substrate conditions • Steel; blast cleaned to ISO-Sa2%, blasting profile 40 - 70 jm (1.6 - 2.8 mils) PPG Protective & Marine Coatings Bringing innovation to the surface!”

PRODUCT DATA SHEET July 6, 2015 (Revision of July 6, 2015) Substrate temperature • Substrate temperature during application and curing should be at least 3°C (5°F) above dew point • Substrate temperature during automatic application should be between 35°C (95°F) and 40°C (104°F) SECONDARY SURFACE PREPARATION • During storage and construction, contamination of the prefabrication primer should be limited • After fabrication, surface defects should be treated according to the scheme hereafter INSTRUCTIONS FOR USE Mixing ratio by volume: base to hardener 75:25 (3:1) • The temperature of the mixed...

PRODUCT DATA SHEET July 6, 2015 (Revision of July 6, 2015) Airless spray Recommended thinner THINNER 90-53 Volume of thinner 0 - 5%, depending on required thickness and application conditions Nozzle orifice Approx. 0.43 - 0.58 mm (0.017 - 0.023 in) Nozzle pressure 12.0 -15.0 MPa (approx. 120 - 150 bar; 1741 - 2176 p.s.i.) Cleaning solvent THINNER 90-53 ADDITIONAL DATA SAFETY PRECAUTIONS • This is a solvent-borne paint and care should be taken to avoid inhalation of spray mist or vapor, as well as contact between the wet paint and exposed skin or eyes • For paint and recommended thinners see INFORMATION...

PRODUCT DATA SHEET July 6, 2015 (Revision of July 6, 2015) SIGMAWELD™ 120 REFERENCES • CONVERSION TABLES • EXPLANATION TO PRODUCT DATA SHEETS • SAFETY INDICATIONS • SAFETY IN CONFINED SPACES AND HEALTH SAFETY, EXPLOSION HAZARD – INFORMATION SHEET INFORMATION SHEET INFORMATION SHEET INFORMATION SHEET INFORMATION SHEET INFORMATION SHEET INFORMATION SHEET TOXIC HAZARD • CLEANING OF STEEL AND REMOVAL OF RUST • SPECIFICATION FOR MINERAL ABRASIVES • RELATIVE HUMIDITY – SUBSTRATE TEMPERATURE – AIR TEMPERATURE WARRANTY PPG warrants (i) its title to the product, (ii) that the quality of the product conforms...