Method and device for manufacturing wire-lattice mats from longitudinal and transverse wire (L,Q) that cross at right angles and are welded together at their crossing points, with the longitudinal wires being advanced in steps, and the transverse wires being moved transversely to the direction of the longitudinal wires along a welding line (2, 3) and welded to the longitudinal wires, with at least one of the transverse wires being tensioned (4, 5) to a preselected adjustable value after being fed into the welding line, and at least one end of this transverse wire (Q) being rotated (4, 5) about its longitudinal axis by a preselected adjustable angle (P6) before welding to the longitudinal wires (L), and then welded to them.