Half shell element for the production of a hollow body

Half shell element (10, 10′) for the production of a hollow body (110) with an identical further half shell element (10, 10′), with at least one guide (20 . . . 20′″) for the further element (10, 10′), which is constructed in a region of a first half periphery (11) of its encircling edge (12), so that the further element (10, 10′) is configured to be pushed onto the half shell element (10, 10′) edgewise from the second half periphery (11′) of the edge (12) lying opposite this first half periphery (11) parallel to a plane of the encircling edge (12) and can be guided on the edge (12) and held in a final position, and a detent hook (30) and a detent surface (31) for engagement on a complementary detent surface (31) and a complementary detent hook (30) of the further element (10, 10′), which are arranged lying opposite each other respectively in approximately the middle of the first and second half periphery (11, 11′) of the encircling edge (12), wherein detent grooves (40, 40′) for embracing an edge region of the further half shell element (10, 10′) are constructed on both sides of the detent surface (31) on the encircling edge (12).