... the drawing,OEM accepted Three legged angle steel tower:Application: Three legged angle steel tower, four legged angle steel tower , Single pole tower,Square steel tower, Triangular tower, Monopole,Electric Power Series Towers ... ,minimum yield strength>=235N/mm2;Available Height: 5-100MVoltage: 10KV, 110KV, 220KV, 500KV or othersSurface Coating: Hot Dip Galvanization or Painting ...