... 20ton Dia of load chain:6mm,8mm,10mm HS-C Series Chain Block Capacity: 0.5~20tonDia of load chain ... kinds of chains,commercial chains,high tensile chains or as you required. Welded Link Chain:Ordinary Mild Steel Link ... coating,hot-dipped galvanized,electro galvanized,PVC coated or as you required.Grade:G30,G43,G70,G80,C100Manufacture Standard ... customers from all over the world. HS-C Series Chain Block