1)Shape of section;polygonal, round; 2)Slip joint or flang connect; 3)Voltage grade;10-220KV ; 4)Deal: Hot dip galvanization 5)Material: hot rolled coil steel (Q235, Q345 or as lients requested) 6)Packing: Plastic bulble, mat & straw bale at the top and bottom or as clients required Advantage; Light weight; Easy install; Compactness; Reduced visual intrusion; Reduced right of way; Reduced land occupancy; Price competitive or lower cost than wood, concrete and sometimes lattice tower; Environmental inert: non toxic, no disposal cost, fully recyclable; Compatible with most standard hardware and banding; Aesthetically pleasing; Reduced transportation cost; Minimal maintenance and inspection cost;