| 摘要 |
PROBLEM TO BE SOLVED: To provide a jig for ball-passing test through a drainage pipe line, and to provide a method for ball-passing test through a drainage pipe line capable of easily collecting balls. ! SOLUTION: A ball-passing test jig 1A is a jig for ball-passing test through a drainage pipe line 12 in which a vertical pipe 121 is connected to a joint pipe 14 having an opening 13 which communicates between the inside and the outside. The ball-passing test jig 1A is provided with a ball receiving member 5 which is detachably attached to the joint pipe 14 therein through the opening 13 and which allows water to flow in the drainage pipe line 12 to flow therethrough and receives balls 2 for the ball-passing test. According to a method of ball-passing test through the drainage pipe line, the ball 2 for the ball-passing test, which flows through the drainage pipe line 12 together with the water, is received by the ball receiving member 5 of the jig 1A which is attached to the joint pipe 14 in the drainage pi |
