The panels used in the construction of Zamil Steel Pre-Engineered Buildings are composed of the following:
- Base metal of either Galvalume coated steel conforming to ASTM A 792M Grade 345B or aluminum conforming to ASTM B 209M Alloy 3003 Temper H26. Galvalume coating is 55% Aluminum and about 45% Zinc by weight.
- An exterior surface coating on painted panels of 25 microns of epoxy primer with a highly durable polyester finish.
- An interior surface coating on painted panels of 12 microns of epoxy primer and modified polyester or foam spec.
Minimum Yield Strength is 34.5 kN/cm2