... of High Mast : Inner double Drum, Rising & Lowering System5. Poles, Anchor Bolts, Nuts, Anchor Plate, Tem-plate: Hot dip Zinc ... . Bottom & Top Dia : 680mm & 200mm or above Gradually Tapered & Telescopic jointed.8. Wall Thickness : 8mm (upto 03 Section) & 6mm Top ... , Anchor Plate, Tem-plate rivets Hot dip Zinc galvanized13. Poles, Base Plate,Bolts to be finished smoothly before galvanizing.14 ...