The present invention relates inter alia to a tank container (10) for the storage and/or transport of gas and/or liquid, said tank container comprising a frame (3) and an elongated and essentially cylindrical tank vessel (5) comprising two head-ends (13), said frame comprising at each head-end an associated head-end frame (4) with at least two bottom corner fittings (7) and an associated head-end saddle support (19); in which at each head-end said head-end frame and said head-end saddle support are mutually connected by two associated transfer beams (30), in which each transfer beam comprises a beam (31) which, near one of said bottom corner fittings, connects the head-end frame to the associated head-end saddle support; in which said transfer beam further comprises a gusset (32) which is permanently connected to said beam and which, viewed away from the associated head-end frame, extends over a distance of A1 beyond the associated head-end saddle support, in which said distance A1 is at least 200 mm, prefera
