Structural Steel Carbon Steel Universal Beam for Solar Mounting System As the main structure of the pv mounting system,the galvnized steel are made by good quality Q235B and Q345B.The performance of load-bearing,wind resistance and seismic resistance has been given sufficient consideration,which will ensure the safety of the system. Product feature: · Excellent quality and reasonable price · Any trial order in small quantity is welcome · Small order is acceptable · OEM is