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The ornamental design for a welding jig, as shown and described. |
FIG. 1 is a front elevational view of a welding jig showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a right end elevational view thereof; and,
FIG. 5 is a perspective top view thereof, with the dotted lines representing two sections of pipe aligned by the welding jig.
The broken lines shown in FIG. 5 are for illustrative purposes only and form no part of the claimed design.
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