五隆兴科技发展有限公司Project: Tongzhou wanguojiayuan, the third company of China Construction Second Engineering Bureau
High efficiency steel rigid column mechanical connection, welding sleeve + double screw sleeve + welding sleeve reduces a large number of welding operations, saves the expensive cost of connecting plate, and the on-site operation is convenient and fast.
![[stiff column] the performance of double screw sleeve instead of welding is incredible!](https://www.bjwlx.com/en/wp-content/uploads/2021/08/1-150x150.png "[stiff column] the performance of double screw sleeve instead of welding is incredible!")
