... service Professional technical team First-class leadershi sub-frame type of high mast lights:1.Shape:Conoid ,Multi-pyramidal,Columniform,polygonal or ... also color polyester power could be coated on the surface)High strength low alloy steel Q235,Q345,GR65,GR50he mechanical ... face joint mode .4.Design of pole :against earthquake of 8 grade ,aganist wind pressure of 1605.Minimum yield strength:355 mpa6 ...