To provide an industrial two-layer woven fabric having improved wear resistance, surface smoothness and marking characteristics, and having a long life by adjusting the balance between the warps and wefts. This industrial two-layer woven fabric is an industrial woven fabric in which an upper-surface-side woven fabric comprising upper-surface-side warps and upper-surface-side wefts and a lower-surface-side woven fabric comprising lower-surface-side warps and lower-surface-side wefts are joined by a joining yarn, wherein: the yarn diameters of the respective upper-surface-side warps are all the same; the yarn diameters of the respective lower-surface-side warps are all the same; the yarn diameter of the lower-surface-side warps is greater than that of the upper-surface-side warps; and the joining yarn for joining the upper-surface-side woven fabric and the lower-surface-side woven fabric is constituted by weaving at least one yarn, among the upper-surface-side warps, with the lower-surface-side wefts.
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