... Multi-pyramidal,Columniform,polygonal or conical 2.Material:steel plate. Galvanised steel pole:1.Shape:Conoid ,Multi-pyramidal,Columniform, ... polygonal or conical2.Material:steel plate.stainless steel compound plate,stainless steel plate,ect.(anticorrosion treatment with hot ... normal cover by Mat or straw bale at the top and bottom ,anyway also can following by client required ...