Fixture

Flange fixture intended to hold a flange to a tube for welding the flange to said tube, characterized in that it comprises

• a) a cylindrical central body (1) comprising at least three evenly distributed expansion holders (4) as well as one cylindrical part (2) provided with threads, whereby the expansion holders (4) are arranged to receive at least each a radially movable expansion means (8), and whereby the cylindrical part (2) being provided with threads is arranged to receive one controlling device (9) influencing the radially movable expansion means for obtaining a outwardly directed movement,
• b) a first cylindrical shaft (13) axially and rotatably mounted arranged in the central body (1) and comprising a second controlling device (14) arranged in the end thereof facing away from the central body (1),
• c) an axially and rotatably arranged second shaft (22) in said shaft (13), which second shaft (22) in its end receives at least three evenly distributed second expansion holders (23), which are arranged to receive at least each one radially movable second expansion means (28), whereby said second controlling device (14) is arranged to influence said second expansion means (28) for obtaining an outwardly radially directed movement;
• and
• d) at least one device (21;34) for checking the influence of the respective controlling device (9;14) for radially outwardly directed movement of the respective expansion means (8;
• 28).