DZ series quenching testing bench is used for end-quenching test for labarotary materials. It is used for end-quenching test for laboratory materials. This machine is of elegant shape. The entire rack is bended and welded together using for stainless steel. The part of tanks of an independent welding is placed on the rack. The cooling water automatically cycles from low level to high level, the process of which is used of stainless steel submersible pump for completing, the high utilization of water, and no waste.