Mitsubishi Heavy Industries Limited

Daiki Hirokawa

Yasuyuki Watanabe

Shosaku Hiwatashi

Toru Shinkawa

A turbine casing divided in an axial direction into a first casing and a second casing coupled to each other by flanges of the first casing and the second casing. The first casing and the second casing are divided into two parts as viewed from the axial direction, the two parts being an upper half casing and a lower half casing. The turbine casing having three or more sets of a first radial reference surface and a second radial reference surface in a circumferential direction, the first radial reference surface being disposed in a flange peripheral portion of the first casing, and the second radial reference surface being disposed in a flange peripheral portion of the second casing. Each first radial reference surface is located at an equal distance from a turbine central axis. Each second radial reference surface is located at an equal distance from the turbine central axis.

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Tokyo, Japan

Daiki Hirokawa