... Finished:black iron,HDG,spray paint thickness:0.5mm to 15mm Main ProductsZ steel structure,C shaped steel stucture,channel steel,angle steel,deformed steel,tail ... manufacture as you requestSurface Treatmenthot dipped galvanized,electrogalvanizing,spray paintMateriaQ235,Q195,Q345Surface Treatment:hot dipped galvanized,electrogalvanizing,spray paint JIS galvanized iron U channel