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| No. Z237 |
| raw material: 40Cr |
| center distance: 211 |
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| No. Z239 |
| raw material: 40CrA |
| center distance: 120.7 |
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| No. Z240 |
| raw material: 40CrA |
| center distance: 112.8 |
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| No. Z245-1 |
| raw material: 20# |
| center distance: 92 |
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| No. Z245-2 |
| raw material: 20# |
| center distance: 92 |
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| No. Z245 |
| raw material: 20# |
center distance:
92 |
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| No. Z247-1 |
| raw material: 42CrMo |
| center distance: 120 |
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| No. Z247 |
| raw material: 42CrMo |
| center distance: 120 |
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