I need a 2inX2in width and height, 62in length square tube.However, I am not sure what metal my boat trailer is so that I can use the square tube for my trailerIs it aluminum, zinc, etc.?And also, where could I find that 2inX2in 62in length square tube?
Most trailers are fabricated with boxed welded Cold Rolled steelThe other material is ALUMINIUMHowever, alumimnum trailers aren't very common as steel onesThere's usually a steel supplier somewhere close byLook online or open the good old Yellow pagesUse a magnet or tap with a hammerA magnet will stick to the surfaceA hammer will leave small dents on the surfaceMost aluminum trailers aren't painted, so you can also file a small section and it'll bring up a shiny surfaceZinc would be a top coating to help preserve steel from rusting, but not made of Zinc.
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