Method for manufacturing tower tube section, tower tube section and wind turbine generator system

Abstract

Provided are a method for manufacturing tower tube section including: forming a first tubular section and a second tubular section; joining the first tubular section and the second tubular section; forming a first notch on the first tubular section and a second notch on the second tubular section, where an opening is formed by the first tubular section and second tubular section, and a height of the first notch is less than a height of the first tubular section, and a height of the second notch is less than a height of the second tubular section; forming a door frame, where the door frame is embedded in the opening and is welded to the first tubular section and the second tubular section, and a door opening is provided to the door frame.

Dependencies are inferred from the claim text.