Specifications of steel traffic signal pole : 1) Material: hot dip galvanized steel. 2) Type: taper round or octagonal pole Steel Traffic signal pole1.Shape:Conoid ,Multi-pyramidal,Columniform,polygonal or conical2.Material:steel plate.stainless steel compound plate,stainless steel plate,ect.(anticorrosion treatment with hot galvanization,also color polyester power could be coated on the surface) ...