The ornamental design for a reinforcingcollar for pipefitting, as shown and described.
FIG. 1 is a first perspective view of the reinforcing collar for pipe fitting.
FIG. 2 is a second perspective view of the reinforcing collar.
FIG. 3 is a first side view of the reinforcing collar, with an opposite second side view being a mirror image thereof.
FIG. 4 is a third side view of the reinforcing collar, rotated 90° relative to the first side view, with an opposite fourth side view being a mirror image thereof.
FIG. 5 is a top view of the reinforcing collar; and,
FIG. 6 is a perspective view of the reinforcing collar shown in a position of use.
The broken lines depict environment subject matter only and form no part of the claim.