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Galvanizing, Primer Adhesion Test and Beyond

Life safety is the mantra of National Fire Protection Association (NFPA) 101 which is embraced by all in the fire protection industry. The approach to life safety has disseminated now into steel protection. Hot dipped galvanized members are being used more frequently in commercial buildings which require hourly ratings for fire protection. 

Product Number: 51219-223-SG
Author: Ernst Toussaint
Publication Date: 2019
Industry: Coatings
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Life safety is the mantra of National Fire Protection Association (NFPA) 101 which is embraced by all in the fire protection industry. The approach to life safety has disseminated now into steel protection. Hot dipped galvanized members are being used more frequently in commercial buildings which require hourly ratings for fire protection. Preparing hot dipped galvanizing that have been protected in accordance with ASTM A123 “Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products” for primer application require certain surface preparation techniques that will not compromise the galvanized layer yet allow the primer to bond to ensure a compatible surface for the intumescent fire resistive material (IFRM). The thickness of the water-based IFRM was determined by the massivity of the steel member.

Life safety is the mantra of National Fire Protection Association (NFPA) 101 which is embraced by all in the fire protection industry. The approach to life safety has disseminated now into steel protection. Hot dipped galvanized members are being used more frequently in commercial buildings which require hourly ratings for fire protection. Preparing hot dipped galvanizing that have been protected in accordance with ASTM A123 “Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products” for primer application require certain surface preparation techniques that will not compromise the galvanized layer yet allow the primer to bond to ensure a compatible surface for the intumescent fire resistive material (IFRM). The thickness of the water-based IFRM was determined by the massivity of the steel member.

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