Abstract: A joint construction is provided for lined equipment in which mutually weldable backing plates or sheets are lined with layer or facing sheets weldable to each other but not to the backing. An intermediate metal is optionally included between the backing and layer. A channel is provided between the layer sheets overlying the joint between the backings. A bridging strip weldable to the layer sheets is disposed in the channel and welded to the respective edges of the layer sheets. In some embodiments spaced strips of the layer material are disposed under the respective edges and the bridging strip and welds are made to join the spaced strips, the bridging strip and the edges of the layer sheets.

Abstract: An improved wall construction and method of fabrication is disclosed in which a wall assembly is comprised of a base metal layer of mild steel with a bonded intermediate layer of copper and a bonded layer of corrosion resistant material containing a fusion weld joining the steel base metal members with the root of the fusion weld abutting an inlaid insert of the corrosion resistant material, a fusion weld joining the layer of corrosion resistant material of the members to each other and to the inlaid insert of corrosion resistant material to provide a relatively smooth surface in the corrosion resistant layer, with the intermediate copper layer removed from the weld areas.