Pyrochemical processes under development at Argonne National Laboratory utilize molten metals and halide salts as solvents to separate molten fuel materials from each other and from fission products. These solvents are pressure-transferred between process vessels through resistance-heated transfer tubes operating at 850°C. The transfer tubes, J- or U-shaped, are fabricated from gun-drilled Mo-30 wt% W bar stock and shaped by hot-bending in a jig. A technique for joining two pieces of tubing was developed because the overall length of available tubing was limited. The transfer tubes are wrapped with controiled-voltage resistance heaters, covered with insulation, and protected by steel shells.