... www.china-weldedpipe.com, we have been exporting high quality high mast stadium light tower poles made in China for years, ... to 50 mSuit forAirport ,seaport,plaza,stadium ,square,highway,street way etcShapeConoid ,Multi-pyramidal,Columniform,polygonal or conicalMaterialUsually ... mode,innerflange mode,face to face joint mode .Design of poleAgainst earthquake of 8 gradeWind Speed160 Km/HourMinimum ...