鋼球 等級G40, 硬度, 研磨與拋光
BN 869
DIN 5401
| Material |
Material
Steel
|
| Material execution |
Material execution
hardened
|
| Surface |
Surface
plain
|
All features
Standard
DIN 5401
Features
| Material |
Material
Steel
|
| Material execution |
Material execution
hardened
|
| Surface |
Surface
plain
|