... powder coat,polish,zinc plated,acid pickling light galvanized u frame steel beams1.Strictly quality control by ... productsmetal fabrication, moulds, auto parts, fifth wheel, lift platform, garage, hardware, crane partsMaterialcarbon steel, stainless steel, aluminum ... ,bending,grinding,machining,threadingSurface finishingzinc plating, hot dipped galvanized, powder coat, e-coat, polishing,chrome plated, ...