Abstract: A connection device for pipes including a first hose-holder (18) mounted on an end portion (3) of the pipe, a second hose holder (16) mounted on the other end portion (6) of the same pipe and a connection element (15) for the connection of the first and second hose-holders (18,16). The connection element (15) consists of a substantially tubular body having a longitudinal hole (30), and a circulating ball portion (17) for the connection to one of the first hose-holder (18) or the second hose-holder (16).

Abstract: A connection device for pipes, of a type comprising a hose-holder (18) mounted on an end portion (3) of the pipe, a hose-holder (16) mounted on the other end portion (6) of the same pipe and an element (15) for the connection of said hose-holders (16,18) consisting of a substantially tubular body having a longitudinal hole (30) therethrough, wherein said element (15) comprises a circulating ball portion (17) for the connection to one (16) of said hose-holders. The device has the advantage that no connection threads having a shoulder protruding on the pipe surface and capable of damaging it are required.

Abstract: A flexible tube comprises a tubular body made of a curable flexible material, having at least an elbow shape, and made by a double curing, the first on a straight mandrel, and the second on a shaped cylindric core, to provide the tube with a desired configuration. With respect to the conventional art in this field, the invention provides the advantage that the shaped tube made thereby is directly provided, at the end portion thereof, with the required fittings, without the need of performing auxiliary processing steps to clamp the fittings.

Abstract: A flexible hose, of the type consisting of a plurality of overlapping material layers, characterized in that said flexible hose comprises at least a layer of a plastics material having a small surface electric resistance.

Abstract: A tube for railroad pressurized air braking systems, which tubs can resist up to a free-flame temperature of about 700-800 ° C. for at least 15 minutes, and has a tube substrate made of a synthetic rubber, at least a reinforcement fabric material layer arranged above the tube substrate and a further synthetic rubber layer coating the at least a reinforcement fabric material layer, the tube having moreover at least a layer of a heat resistant material arranged above the synthetic rubber layer and coated by an cuter synthetic rubber layer.

Abstract: A flexible hose for fuels comprises a rubber inner layer, at least a reinforcement fabric layer and a covering rubber layer and, moreover, at least a fuel vapor low permeability material layer. With respect to prior flexible hoses for fuels, the inventive flexible hose has the advantage that it drastically lowers the gas leakages through the flexible hose wall, so as to meet the requirements of the enforcing rules in this field.

Abstract: A flexible tube comprises a tubular body made of a curable flexible material, having at least an elbow shape, and made by a double curing, the first on a straight mandrel, and the second on a shaped cylindric core, to provide the tube with a desired configuration. With respect to the conventional art in this field, the invention provides the advantage that the shaped tube made thereby is directly provided, at the end portion thereof, with the required fittings, without the need of performing auxiliary processing steps to clamp the fittings.

Abstract: A flexible corrugated pipe, of a type comprising a plurality of overlapping material layers, comprises at least a coiled wire, and at least an electric cable, the coils or turns of said at least a wire and said at least an electric cable being arranged on a same plane, inside the wall of the pipe. Owing to the provision of the built-in electric cable, embedded in the thickness of the corrugated pipe, at a same position or level as the reinforcement metal coils, the outer corrugating configuration of the body of the tube is improved, thereby consequently improving the flexibility of the corrugated pipe.