This study evaluates the applicability of a nondestructive testing method using microwaves to the long-range inspection of a pipe with a bend. Experimental verifications were performed using four 1 m pipes, with an inner diameter of 23 mm, connected with flanges and a 90-degree bend. The experimental verifications confirmed clear reflections due to artificial wall thinning, simulated by a short pipe with an inner diameter larger than 23 mm, even when the wall thinning was situated directly below the ben...