"Economic single-column vertical lathe" may refer to a simplified design or lower-cost single-column vertical lathe. The single-column vertical lathe is a common metalworking machine tool typically used for light to medium machining tasks. The following are general features and possible applications of the economical single-column vertical lathe:

1. Simplified design: Economical single-column vertical lathes may adopt simplified design and structure to reduce manufacturing costs. This may include less complex functionality, streamlined control systems and fewer bells and whistles.

2. Basic functions: Although they are economical lathes, they still have basic turning functions. This includes basic operations such as workpiece holding, tool feeding, spindle rotation, etc.

3. Scope of application: The economical single-column vertical lathe is suitable for workpieces that do not require particularly high precision, have a small processing volume, or have relatively simple processing requirements. This may include some small and medium-sized enterprises, individual workshops or educational institutions.

4. Applicable materials: They are usually suitable for processing more common metal materials, such as steel, iron, aluminum, etc.

5. CNC system: Some economical single-column vertical lathes may be equipped with a simple CNC system to control the movement of the tool. These CNC systems may be relatively basic and have fewer features.

6. Manual operation: In some simpler models, operation may rely mainly on manual control, such as manually turning the handle to move the tool or workpiece.

7. Application fields: This type of lathe may be used in light industrial manufacturing, parts processing, model making, educational laboratories and other fields.

Although economical single-column vertical lathes may not be as capable as higher-end models in terms of functionality and performance, they offer a relatively inexpensive and simple option that works well for some specific machining needs and budget constraints.