A pressure hose for a water-carrying system, especially for connecting sanitary taps or for connecting parts of the water-carrying system, having a corrugated inner hose made of plastic. At least one hose end of the pressure hose is provided with a connecting piece, designed such that it differs from the inner hose, for joining the pressure hose to a complementarily designed connecting piece of a sanitary tap and/or a part of the water-carrying system. The inner hose and the connecting piece are formed as one piece and the inner hose and the connecting piece are preferably produced via extrusion in a common extrusion process.

An end-fitting of a flexible pipe for transporting fluid, that includes at least one sealing assembly with at least one crimping ring comprising at least one bulge inserted radially into a polymer sheath of the flexible pipe, the end-fitting including an annular seal, disposed in contact with the polymer sheath at a distance from the crimping ring, the annular seal having an annular central region that is deformable radially towards the polymer sheath, and two stiffened annular peripheral regions that are situated on either side of the central region along a central axis of the flexible pipe, the peripheral annular regions being movable towards one other to activate radial deformation of the central region towards the polymer sheath from a rest configuration to an active sealing configuration around the polymer sheath.

The present invention provides a steel wire pre-embedded integrated full-bore acid fracturing hose assembly, including a hose that sequentially includes an inner liner, an internal adhesive layer, a steel wire layer, and an external adhesive layer from inside out; and, a joint that includes a protective sleeve disposed between the external adhesive layer and the steel wire layer, a locking sleeve sleeved on an outer side of the internal adhesive layer, and an outer sleeve disposed outside the inner liner, which are sequentially disposed from inside out along an axial direction of the hose; an outer circumferential surface of the locking sleeve is provided with a tooth groove, and a steel wire of the steel wire layer is embedded in the tooth groove and locked; and the outer sleeve is in a threaded connection with the locking sleeve and the protective sleeve.