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.

An end fitting (14) of a flexible pipe (14) for conveying a fluid that includes: an end vault (42) and an outer cover (44) fixed around the end vault (42), at least a front region (36) of an internal polymeric sheath (18), at least end sections (40) of at least one tensile armor layer (24, 25) arranged around the internal polymeric sheath (18), a front sealing assembly (54) arranged around the front region (36) of the internal polymeric sheath (18). The front sealing assembly (54) includes a cannula (64) supporting at least one part of the front region (36) of the internal polymeric sheath (18) and an annular protrusion (66) arranged on an internal surface (48) of the end vault (42). The front region (36) of the internal polymeric sheath (18) is circumferentially tightened between the one protrusion (66) and the cannula (64).

An extensible hose, comprising an inner tubular element (2) suitable, in use, for being passed through by a fluid, said inner tubular element (2) being made from a first elastically extensible material and suitable for lengthening and widening under the action of the pressure of the fluid. The hose (1) also comprises at least one extensible outer tubular element (3) overlying, and coaxial to, said inner tubular element (2), comprising at least one surface portion (4) made from a second material resistant to external stresses, and the like.

A quick connect coupling assembly for interconnecting a tubular component to a mounting component is provided. The coupling assembly includes a retainer adapted to be coupled to the mounting component and having a pair of resiliently cantilevered snap arms. A housing for coupling with the mounting component has an inner cam surface and is configured to abut the mounting component. The snap arms each include a first deflector ramp that is aligned in proximity to the inner cam surface and a second deflector ramp adapted to releaseably engage a back surface of the mounting component. A push/pull feature permits the retainer to be pushed and causes the first deflector ramps to engage the inner cam surface and cause the snap arms to deflect inwardly and release the second deflector ramp from engagement with the back surface and allow the coupling assembly to be pulled out of the mounting component.

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.