... free Finished:black iron,HDG,spray paint thickness:0.5mm to 15mm Main ProductsZ steel structure,C shaped steel stucture,channel ... can manufacture as you requestSurface Treatmenthot dipped galvanized,electrogalvanizing,spray paintMateriaQ235,Q195,Q345Surface Treatment:hot dipped galvanized,electrogalvanizing,spray paint Q235 hot dip galvanized rail with holes