Metal Strut Channel Materials & Finishes

Metal Strut Channel Materials:

• Stainless steel
• Steel coils
• Accessories (nuts, bolts, washers, clamps, fittings, and more)

Strut Finishes

 Pre-Galvanizing

A zinc coating is applied by hot-dipping the steel coil on Gregory’s specialty continuous galvanizing line. The channel is roll-formed, cut and/or punched as specified in conformance to ASTM 1011 for hot-rolled steel and ASTM 653 for hot-dipped pre-galvanizing, with a G-90 coating (0.90 ounces of zinc per square foot of steel).

 Hot-dipped Galvanized

The hot-dipped galvanized strut material is zinc coated after fabrication providing extra-heavy protection on all surfaces. The channel is pretreated, pickled, and then dipped into tanks of molten zinc, creating an electro-chemical alloyed bond. HDG’s thicker zinc coating provides additional corrosion resistance for highly corrosive exterior applications. G-STRUT® hot-dipped galvanized conforms with ASTM A-123 specification.

 Galvannealed

A zinc coating is applied by pre-galvanizing the steel coil. The coil then passes through an additional heat induction process, creating a matted gray finish with an alloy coating that enhances paintability. Galvannealed G-STRUT® is easily painted post-installation without costly pre-treatment or priming.

 Electro-Galvanized

Electro-galvanized, or “zinc plated,” bonds the steel and .5 mils of zinc via an electrolysis process. Electro-galvanizing is most commonly applied to standard G-STRUT® fittings and hardware.

 Powder Coat (Green)

(Custom colors also available) Powder coating electrostatically applies a uniform dry polyester powder to the metal strut channel surface. The applied powder is then “oven-baked” to a durable painted finish.

 Aluminum

The aluminum strut channel is available in extruded Aluminum Alloy suitable for various applications.

 Plain

A plain finish is pickled, hot-rolled carbon steel with a light oil finish. There is no protection against red rust.

 Yellow Zinc (Gold)

Also an electro-galvanized finish, the pickled, fabricated part is immersed in a yellow zinc coating bath and electrostatically bonds to form a protective yellow, zinc finish.

 PVC Coated

A polyvinyl chloride (PVC) plastic coating is bonded to the channel or accessory by immersing the part in fluid PVC tanks. PVC can be applied over galvanized or plain steel.

 Stainless

G-STRUT® stainless steel channel is supplied in standard 304 Grade. Grade 316 is also available, typically for more corrosive environments.

 Fiberglass

Made from glass fibers bound together by resin, fiberglass is a special composite finish that is corrosion resistant. It adds strength and durability to structures to withstand heavy loads.