Multi-Purpose Sling for Turn-over of Semi-Cylinder and Installation

In order to prefabricate the semi-cylinder in vertical,make the semi-cylinder turn over in the airborne,and unhook the sling underwater automatically when installation,a set of structure legerity,operation simple,safe reliable multi-purpose sling was designed.It can improve the prefabrication quality of semi-cylinder,shorten its installation period,save investment and enhance economic performance.