... used in Airports, highways, city square and so on 25-30 meters Specifications30m high mast poel high quality high mast pole galvanized ... ,road lighting pole.2.Matercial :hot rolled coil from Q235 to Q460 ,ASTM573 GR65, GR50 ,SS400, SS490,ST52-33.deal: Hot ... 1mm to 22mm7.Shape: polygonal(6-side,8side,12-side,16side) round tapered.8.Easy install and maintenance. 25-30 meters galvanized high ...