· At Tri-State Aluminum, we offer aluminum channel extrusions in a range of 6000 series aluminum alloys, including 6005/6005A, 6061, and 6063. Our aluminum channels are highly resistant to corrosion and can be cut to length, meaning they can be used in wide range of industrial applications. In addition, Tri-State Aluminum can also provide anodized and painted finishes if required. Contact us to order today!