| 摘要 |
A connection element for fluids distribution pipes, produced by a steel strip forging operation and including an outer surface, suitable to define at least one through opening (11), the outer wall including a series of walls or faces (12), bounded by respective longitudinal projections (13), inner portions (16) corresponding to the walls or faces and being bounded by respective grooves (17), a thread (19), suitable for coupling with at least one male element, being made on at least one part of the inner portions; the coupling is facilitated by the special conical entry of the connection element, which is made during the forging phase thanks to a determined shaping of the die and, additionally, a collar (14) is made at the inlet through opening (21) of the thread (19), determining a remarkable rigidity of the piece and easing the mesh of keys or other clamping and/or opening instruments in general. |
