Notably, window and door aluminum profiles often have both male and female features in same profile.
Anodized:7-23 μ , Powder coating: 60-80 μ , Electrophoresis film: 12-25 μ
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The best construction method for iron fence is one that is strong and looks good from both sides. Below are a couple of photos showing how we build our Stronghold Iron fence with a punched rail and fully welded construction at the picket-to-rail intersection and for the decorative finial tip. You can see the picket (upright) goes through the middle of the punched rail for a strong connection and clean look from both sides of the fence: