3820 标准查询与下载
共找到 4 条与 相关的标准，共 1 页
Screw threads for drill tubes will diameters exceeding 100 mm for large hole boring in mining
- ICS
- 3820
- CCS
- J04
- 发布
- 1990-06
- 实施
Threads as per this standard are used in underground mining. They are designed for lowest-possible unit pressure and highest-possible safety against corrosion.
Knuckle threads for the mining; threads with large load-bearing depth
- ICS
- 3820
- CCS
- J04
- 发布
- 1990-01
- 实施
