| 摘要 |
A convector plate for use in heat treatment furnaces comprising a plate of substantially circular configuration with an upper and lower surface each of which includes a plurality of gas passage means of channel section, the passage means in one face being mutually parallel and each means in one face being mutually parallel and each having substantially parallel wall means, wherein the passage means in the upper surface are disposed mutually at right angles to the passage means in the lower surface. |
