Sheet metal turbine housing

A sheet metal turbine housing mounted downstream of an engine exhaust manifold and having a scroll part made by a sheet metal scroll member to form a spiral exhaust gas passage of a turbocharger that drives a turbine by using exhaust gas, wherein

• the scroll part is formed by a first scroll part and a second scroll part butted opposite each other and joined together,
• a center core part in a substantially cylindrical shape disposed in a volute center part of the scroll part includes:
• a housing portion at one end that surrounds an outer circumference of a turbine wheel via a clearance and that forms a gas discharge port;
• a bearing receiving portion at the other end in which a bearing axially supporting a rotating shaft of the turbine wheel is fitted;
• and a plurality of circumferentially spaced supports bridging a gap between the housing portion and the bearing receiving portion in an axial direction of the turbine, and wherein
• the housing portion, the bearing receiving portion, and the supports are formed integrally in one piece from a steel pipe member in an annular shape.