A metallurgical furnace cooling plate includes a cooling plate body with front and rear faces and at least one coolant channel inside the body, which communicates with a rear opening on the rear face; and a connection pipe connected to the body so that a pipe channel of the connection pipe communicates with the coolant channel, the connection pipe adapted for carrying coolant fluid to or from the channel. The body includes a receiving bore extending in a bore direction from the rear opening into the coolant channel, the channel being spaced in the bore direction from the rear face by a cover thickness of a cover portion and extends in the bore direction over a width. A connection pipe end portion extends into the receiving bore beyond the cover thickness and is form-fittingly received in the receiving bore along at least a portion of a width of the channel.

A cooling assembly for cooling exhaust gases emitted from a steel-making furnace includes a body having a cross-sectional shape with a thickness defined between an outer surface and an inner surface thereof. The body includes a first mounting end having a first length and a second mounting end having a second length, the second length being different from the first length. The body is arcuately-shaped with a concave inner surface and convex outer surface, and the second mounting end is spaced from the first mounting end. A fluid conduit is defined between the inner surface and the surface for a cooling fluid to flow therethrough.