street light pole Q235 steel material smooth welding no edge HDG,powder ... Q235 or ss4002)Steel tickness:3-4MM3)8-12 meters pole,vary from person to person4)Lithium arc welding,tighten5)Hot ... -dip galvaniation and powder coating,anti-corrosion,aging resistant6)Pole shape:square and round conical,tubular stepped7)Base plate mounted ... mainly depend on customers' demand stainless steel street lamp pole