... ironUsageProtective,home&garden gateColorblackFinishGalvanized after powder coatingAdvantagefast shipping,custom-made, CAD drawingdurable, weather resistantcompetitive price,easy installacid washing 2 timesShiyuan Wrought Iron ... .2. Surface treatment: Hot dip galvanizing, sand blasting, acid washing, electro galvanizing, powder coating, hand painting and spray painting.3.Most of ...