Steel bar connecting sleeve
The utility model discloses a steel bar connecting sleeve, which is provided with an inner thread, wherein the sleeve wall is provided with inspection holes; and a distance between the center of the inspection hole and one end surface of the sleeve is equal to a distance between the center of the in...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a steel bar connecting sleeve, which is provided with an inner thread, wherein the sleeve wall is provided with inspection holes; and a distance between the center of the inspection hole and one end surface of the sleeve is equal to a distance between the center of the inspection hole and the other end surface of the sleeve; the inspection holes on the sleeve are a groove-shaped through hole; the axial center line of each groove-shaped through hole is overlapped with the axial center line of the sleeve; more than three inspection holes are formed in the sleeve and are uniformly distributed on the circumference wall of the sleeve; and a scale mark is arranged at one side of each inspection hole, the scale mark is vertical to the axial center line of each inspection hole, and the scale of the center of each scale mark is aligned to the center of each inspection hole. According to the utility model, through observation of the inspection holes, steel bar butting flat-ends which are scr |
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