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Recommended application grade
| Grade | Recommended application |
| ZY35 ZY35A | High hardness and good wear resistance.Used in the counting down two of finish rolling and reducing stands. |
| ZY34 ZY34A | Better wear resistance.Used in the stands counting down two of finish rolling and reducing stands. |
| ZY33 ZY33A | Moderate wear resistance and impact resistance.Used in the wear stands of finish rolling. |
| ZY31 ZY31A | Moderate wear resistance,good impact resistance.Used in the front stands of finish rolling.Also in the rear stands of finish rolling under unstable operation. |
| ZY30 ZY30A | Better toughness.Uesd in the first and second stands of finish rolling or reducing stands.Also in the rear stands of finish rolling under unstable operation. |
| ZY29 ZT29A | Good impact resistance.Used in the first and second stand of finish rolling,the last two stands of pre-finish rolling and the reducing stands as well. |
| ZY28 ZY28A | High binder content,good toughness and thermal cracking resistance.Used in the stands of prefinish rolling.Suitable for hot rolling thread steel. |
| ZY27 ZY27A | Good toughness and thermal cracking resistance.Used in the stands of prefinish rolling.Suitable for hot rolling thread steel. |
Note:1.ZY series is suitable for cooling water with PH≤7.2;
2.ZY-A series is suitable for cooling water with PH≥7.2.
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