The biggest difference between large tonnage chain block and light and small-sized chain block lies in the structural design. In order to ensure the bearing weight and stability, large tonnage chain block adopts the design of single hook, double / multi head and double / multi row chain.

For example, the 100 ton chain block adopts the upper and lower hooks with a standard bearing weight of 120 tons, four light chain block heads (including four hand zippers), the design of 20 12mm load-bearing chains in double rows, and the coaxial chain arrangement mode, which not only facilitates the lifting operation, but also ensures the best stress state of the chain and ensures the safety of engineering operation.