PURPOSE: To raise strength of a welding wire gauze, and to prevent breakage, etc. of a strand due to stripping, by welding a double strand to each different crossing strand, in a double wiring part, when welding a strand crossing part of single and double lattice-like wiring parts.

CONSTITUTION: The first strands 2, 2W arrayed in a large number at prescribed intervals, the second strands 3, 3W which cross the strand 2, and the third strands 4, 4W are arrayed, and a single wiring part 5 and a double wiring part 6 are provided. Subsequently, each crossing part 7 of the single wiring part 5 is welded. On the other hand, as for the double wiring part 6, the strands 3, 4 are welded in crossing parts 8, 9 with each different strand 2. In this way, as for the double wiring part 6, strength of a welding wire gauze 1 is raised remarkably by two strands 3, 4, and even if one strand is stripped off at a welding point, the stripped-off part is protected by the other strand, and its breakage is prevented.