An apparatus line for manufacturing seamless steel pipes and tubes includes: a heating apparatus for heating a steel raw material; a piercing apparatus for piercing the heated steel raw material thus forming a hollow material; and a rolling apparatus for applying working to the hollow material to form a seamless steel pipe having a predetermined shape. A cooling apparatus is arranged on an exit side of the rolling apparatus. A heated steel raw material is worked by the rolling apparatus after being pierced by the piercing apparatus, and thereafter, using a surface temperature of a hollow piece before being cooled by the cooling apparatus as a cooling start temperature, the hollow piece is cooled to a cooling stop temperature differing by 50 C. or more from the cooling start temperature and being equal to or above 600 C. at an average cooling speed of 1.0 C./s or more in terms of an outer surface temperature.

The present application relates to a stand housing (10) for a stand (1) for rolling metal rods, wires or pipes along a rolling axis (19), wherein the stand housing (10) comprises an outside (12) having six side surfaces (14.1-14.6) which, viewed along the rolling axis (19), form edges of a regular hexagon, an inlet side (15), and an outlet side (13). In this case, at least one water feed opening (43.1, 43.2, 43.3) is arranged on three of the side surfaces (14.1, 14.3, 14.5) that are not adjacent in each case, which opening is designed to conduct water through the interior of the stand housing (10) to a water outlet opening (42.1, 42.2, 42.3) in the outlet side (13) or in the inlet side (15).