|Unistrut Finish - Pre-Galvanized Zinc (PG)|
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Pre-Galvanized Zinc (PG): ASTM A653
Pregalvanized steel is zinc coated by a hot dip process. Steel strip from a coil is fed through a continuous zinc coater which cleans, fluxes and coats the steel with molten zinc. After cooling, the steel is recoiled.
The pregalvanized zinc coating conforms to a G-90 thickness designation per ASTM A653.
The zinc thickness is .75 MIL or .45 oz./sq. ft. of surface area.
This coating is offered on Unistrut channel and tubing and is a well-proven, time-tested performer for indoor and outdoor applications.
For severe corrosion applications use hot dip galvanizing (HG).
Zinc Coating Unistrut products are available in three types of zinc coatings:
Comparison of Zinc Galvanized Finishes