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The leg material is Q235B, and the container shell material is Q345R; can welding be carried out directly without using gussets?
Under normal circumstances, there is no problem; if it is a heat treatment equipment, welding gussets should be considered.
In such cases, shims are generally required.
There are also those without shims; it depends on which model of leg you choose. As for heat treatment, the legs can sometimes be welded first