L46A1 Mast Section Installation and self-examination of Tower ceiling lifting and turning
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Standard requirements for self-inspection of Tower lifting and rotation:
1. A balance valve or hydraulic lock shall be provided and connected to the cylinder with a hard tube.
2. When there is no central collector ring, a rotary limit should be set. The rotating part should be free to rotate in the non-working state. No stopper should be set up.
L46A1 Mast Section L46A1 mast section is the best in this field
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