Zhejiang heding copper industry co., LTD. Second phase technical renovation project, xindeng town industrial park, fuyang district, hangzhou city.The steel structure is a steel frame structure with 14 floors above ground and a building height of 60.2m.The main members are made of Q345B material, the columns are square box shaped steel columns, h-shaped steel columns, the section size of the largest 600*600*30, HN400*200*8*13 floor beam is mainly welded h-type steel beam, hot-rolled h-type steel beam, h-type steel beam section of the largest HN500*200, Angle steel support, floor plate using 5mm thick decorative steel.