Abstract: The container consists of two shells which face each other and are mounted to each other at their port edges by means of wedge type fastener structures. To this end each shell includes a plurality of semi-wedges arranged distributed along the circumference. Two opposite semi-wedges of the two shells complete themselves to a complete wedge. A separately provided wedge clams is slid over every complete wedge, which wedge clamp grips around the complete wedge and presses the two semi-wedges of each complete wedge and accordingly the two port edges together.