Abstract: For heating or cooling the content of a tank, flow paths for a temperature controlling medium are provided in the form of longitudinal channels 13 of closed hollow profile separate from the tank envelope 12. The channels 13 are connected at either end to collecting channels 14 extending in the peripheral direction of the envelope 12 to form an internally continuous channel system. This channel system may be produced separately of the tank as a generally trough shaped structure and, after the tank has been placed therein, fixed to the tank and kept in close proximity to the tank envelope 12 by an insulation 16, 17 which surrounds the overall structure.

Abstract: In a tank container, the saddle connection between the tank 16 and each container end frame 10 consists of only two structural elements of simple design, i.e. an end ring 17 which is formed by a cylindrical tubular piece and welded to an area of the tank bottom 19 remote from the axis, and a saddle ring 18 which is shaped as a profile ring and welded to the inner surface of the end frame 10. The end of the end frame 17 facing the frame and an axial flange 23 of the saddle ring 18 are welded together after any lengthwise tolerances between the tank 16 and the end frame 10 have been compensated. The peripherally continuous cylindrical end ring 17 and the peripheral continuous saddle ring 18, due to the fact that they are welded together and connected to the tank bottom 19 and the end frame 10, result in an overall torsion-resistant structure which requires no diagonal elements in the end frame even for large containers.