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glossary term

Coating Designations

GI = Galvanized, Zinc Coating / GA= Galvannealed, 90% Zinc 10% Iron Alloy Coating / AZ- Galvalume, 45% Zinc-55% Aluminum Coating / AL T1= Aluminized, Type 1 90% Aluminum-10% Silicon Coating / AL T2= Pure Aluminum Coating / GF= Galvfan, 95% Zinc-5% Aluminum / EG= 80 to 90% Zinc 10 to 20% Iron Coating (Applied by electro deposition) E - Exposed part U or UL- Underwriter Laboratory approved (ASTM posts metric equivalents)

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