| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JC/T 878.4-2022 | English | 489 |
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5 days [Need to translate]
|
(Hard tooth surface gear units for the cement industry - Part 4: Gear units for vertical roller mills)
| Valid |
JC/T 878.4-2022
|
| JC/T 878.4-2010 | English | 479 |
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3 days [Need to translate]
|
Case-hardened reducer used in cement industry. Part 4: Reducer for vertical roller mill
| Obsolete |
JC/T 878.4-2010
|
| JC/T 878.4-2001 | English | 399 |
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|
3 days [Need to translate]
|
Case-hardened vertical mill-reducer used in the cement industry
| Obsolete |
JC/T 878.4-2001
|