In general ,1.5 ton Electric Chain Hoists hooks are made of high quality alloy steel, after forging, heat treatment , returns, modulation 1.5 ton electric chain hoists produced by surface embalmed. They are divided into groups on the hook group drank hook . Their volume and weight are generally the same. But some companies have now changed the hook up and down the same group configuration mode . Heat treatment on the hook to the normal group , and after heat treatment under the hook group in this part of the modulation , the modulation to less than the hardness of the hook set , which is why it ? So this is completely meet market demand, solicit opinions from all over the rigger , in-depth findings of the study. Because Electric Hoist in use , there will be a very occasional overload situation occurs . In this case , the case will be deformed hook . The group usually hanging on a hook point , difficult to detect, if problems arise then serious consequences 1.5 ton electric chain hoists. The next hook is very easy and intuitive to see change hook , hook dangerous reduce the maximum deformation continue operations. Therefore, the tensile strength of the upper and lower hook artificially make a difference group , is necessary .