... 30 mm Suit for:Airport ,seaport ,plaza, stadium , square, highway, street way etc Shape:Conoid , Multi-pyramidal, Columniform,polygonal or conical ... The casing anti-corrosion performance:Class Two Working atmosphere of lighting fixture:-35 °C~+45 Surface treatment :Hot dip galvanized ... mode ,innerflange mode ,face to face joint mode . Design of pole:Against earthquake of 8 grade Wind Speed:160 Km/Hour ...