| 摘要 |
A cooling facility of steel plate exhibiting good maintainability and excellent drainage performance when a large quantity of cooling water is supplied to the lower surface of the steel plate, and achieving high cooling speed by performing efficient cooling uniformly in the width direction. A method for producing a high quality steel plate is also provided. The cooling facility comprises a plurality of protective plates (34) arranged obliquely to the carrying direction of the steel plate (10) while spaced apart equally, and a nozzle array provided between the protective plates (34) obliquely to the carrying direction in order to supply cooling water to the lower surface of the steel plate (10), wherein the nozzle array consists of as many circular tube nozzles (32) as the number of imaginary lines (36) described at a constant pitch in the plate width direction that are respectively arranged on the imaginary lines, and the upper end of the circular tube nozzle (32) is located at a position lower than the upper end of the protective plate (34).
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