| 摘要 |
A tube joint between two intersecting tubes of a light metal radiator whose first tube has at least two ribs extending in longitudinal direction and projecting on both sides and whose second tube is a header transversally extending with respect to the ribs of said first tube, one end of said first tube forming a tight, communicating connection with an aperture in the header, if required by interpositioning a gasket, sleeve or the like. The tightness of said communicating connection is obtained by pressing said header against said tube and the compressive force is produced by welding said header to said ribs of said tube.
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