We provided bolts and anti-loosing nuts for the essential applications of construction cranes.

The construction cranes are widely used for shipyard , power plant , and installation of large-scale engineering equipment and etc . even slight defects may cause equipment failure, downtime and even accidents. reliability are basic requirements for our products.

We provides the  key bolts for pivoting installation,all the specifications are  meet or exceed international standards.

After many years applications without any quality problems , we recognized brand in the customers side .