Classification of extended arm excavators
1. According to their homework methods, they can be divided into: demolition with long arm excavator, deep pit with long arm excavator, pile driving with long arm excavator, etc;
2. Divided by the number of segments: two-stage extended arm excavator, three-stage extended arm excavator, four stage extended arm excavator, etc;
3. Divided by their performance: fixed extended arm excavator, sliding extended arm excavator, telescopic extended arm excavator, etc;
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