| 摘要 |
<p>The present invention relates to a hydraulic circuit board to be used in hydraulic control systems, which circuit board (1) comprises laminated plates of metallic material having prefabricated hydraulic channels therein, said plates being laminated without the use of additives or any possibility for impurity intrusion. This laminated hydraulic circuit board (1) will give a permanent quality very close to the qualities of the basic metallic material, and can be used for high pressure operation, for example in the range of 10,000-15,000 psi.</p> |
