| 摘要 |
PROBLEM TO BE SOLVED: To provide an inspection jig with which the inner surface dimension of the faucet of a joint with a tapered socket can be measured easily and accurately, another inspection jig with which the radius of curvature of the bend section of a bend joint with the tapered socket can be measured easily and accurately, and an inspection method using the jigs. SOLUTION: The inspection jig for joint with tapered socket converts the value of the allowable diameter differenceΔD between the minimum and maximum inside diameters of the socket section of the joint with the tapered socket into the value of a horizontal allowable differenceΔL and uses the dimension of the differenceΔL as the inspection gauge of the inside diameter of the tapered socket by marking the dimension on the outer peripheral surface of a cylindrical body as marked lines. On the inspection jig for inspecting bend joint with the tapered socket, a groove composed of curved surfaces respectively having the external and internal maximum allowable radii of the bend section of the bend joint with the tapered socket is engraved. The inspection method uses these inspection jigs.
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