... Minimum 25 yearsWorking & Resting Platform Quantity:1-3 PCSAntenna Support Quantity :3-18 PCSMicrowave Dish Quantity:3-18 PCSFeature: ... steel tower , Single pole tower), (Angle steel tower , Single- pipe tower , Steel tube tower),(Square steel tower, Triangular tower, Monopole),Microwave tower, Guyed tower(Guyed Masts), Self supporting tower , Guard tower, Bionic tower,Cell phone tower, lattice tower ...