steel tapered columnPole material is Q235,Q345,SS400Our weld is well done and smooth1)6- 8 meters poleTop diameter : 70mm, bottom diameter 150mmflange :280*280*16mm ,thickness 3.25-3.5mm2)8-10 meters poleTop diameter : 80mm, bottom diameter 180mmflange :300*300*18mm, thickness 3.75mm3) 10-12 meters...