Into which two main categories are the lifting methods for tower-type equipment divided?

Overall lifting, or lifting and assembly in separate parts.

Overall lifting and sectional lifting for welding.

The main methods for lifting tower-type equipment fall into the following 4 categories: 1. Sliding lifting method 1.1 Lifting of masts 1.1.1 Sliding method using an inclined single mast 1.1.2 Sliding method using an upright large mast 1.1.3 Sliding method using two masts 1.1.4 Sliding method using a gantry mast 1.1.5 Sliding method using four masts 1.2 Crane lifting method 1.2.1 Sliding method using a single crane 1.2.2 Sliding method using two cranes 2. Turning lifting method 2.1 Lifting of masts by turning 2.1.1 Turning method using an upright single mast 2.1.2 Turning method using two upright masts 2.2 Lifting by turning with cranes 2.2.1 Turning method using a single crane 3. Lifting and transporting method 3.1 Cranes 3.1.1 Lifting and transporting method using two cranes 3.1.2 Lifting and transporting method using three cranes 3.2 Two masts and cranes 3.2.1 Lifting and transporting method using two masts and cranes 3.3 Gantry masts and cranes 3.3.1 Lifting and transporting method using gantry masts and cranes 4. Pushing and lifting method 4.1 Frame-type gantries 4.1.1 Pushing and lifting method using frame-type gantries 4.2 Cranes 4.2.1 Pushing and lifting method using cranes

There are two methods: overall lifting and sectional lifting. Generally, large and extra-large tower-type equipment is assembled using the sectional lifting method, while small or precision-oriented tower equipment typically makes use of the overall lifting method.

There are two methods: overall lifting and sectional lifting