A protective coating. No. 1 is for interior surfaces of pressure steam tanks including boilers, economizers, calorifiers, turbines and hot water tanks of temperature above 100°C (212°F). No. 3 is for wet surfaces of a temperature below 50°C (125°F) or for dry, hot surfaces up to a temperature of 200°C (400°F).
A protective coating. No. 1 is for interior surfaces of pressure steam tanks including boilers, economizers, calorifiers, turbines and hot water tanks of temperature above 100°C (212°F). No. 3 is for wet surfaces of a temperature below 50°C (125°F) or for dry, hot surfaces up to a temperature of 200°C (400°F).