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DIN 20378:1990-10
Drilling hammers; taper gauges for tapered connections of drill rods and bits
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Summary
This standard fixes dimensions and surface conditions of gauges which are used to proof the tapered coupling parts of drill rods as per DIN 20377 and percussion bits as per DIN 20379.
Technical characteristics
| Publisher | Deutsche Institut für Normung e.V. (DIN) |
| Publication Date | 10/01/1990 |
| Page Count | 2 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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01/10/1990
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