DIN 20311 [Withdrawn] references following documents:
| Document number | Edition | Title |
|---|---|---|
| DIN 20314 | 1990-06 | Screw threads for drill tubes will diameters exceeding 100 mm for large hole boring in mining More |
| Document number | Edition | Title |
|---|---|---|
| DIN 20314 | 1990-06 | Screw threads for drill tubes will diameters exceeding 100 mm for large hole boring in mining More |