A known method for producing an object having a flanged tubular portion at the outer periphery, comprises supplying a continuously extended, cylindrical body made of the flange material to a welding zone at the tubular portion of the object and welding the flange material to the welding zone by heating and winding the cylindrical body around the object. In order to provide a method and an apparatus for producing an object having a flanged portion at the outer periphery without requiring sophisticated manual technique or a manual skill of a well trained expert it is suggested that said method further comprises supplying the cylindrical body to the welding zone in a predefined feeding direction and with a adjustable feeding rate, heating a front end portion of the cylindrical body and melting it to the welding portion, continuously rotating of the object with a adjustable rotation speed, whereby the welding zone is moved in a direction parallel to the feeding direction, observing at least one boundary of the cylindrical body in order to detect a lateral displacement of the boundary in a direction vertical to the feeding direction; and providing an automatic control mechanism, whereby the detected displacement is used as a regulating variable. Furthermore an apparatus is suggested characterized by supplying means for continuously feeding of the cylindrical body with an adjustable feeding rate and in a predetermined feeding direction to the welding zone in such a manner that the front end is directed to and in contact with the welding zone, holding means for holding the object, whereby the object is rotatable along a rotational axis and with an adjustable rotation speed, whereby the welding zone is moving in a direction parallel to the feeding direction of the cylindrical body, heating means for heating and melting the front end of the cylindrical body when in contact with the welding zone, observing means to observe at least one boundary of the cylindrical body in order to detect a lateral displacement of the boundary in a direction vertical to the feeding direction; and controlling means using the detected lateral displacement as a regulating variable.