A pipe joining system and pipe joint are shown m which two sections of molecularly oriented pipe are joined using heat shrinking techniques. A first section of pipe is provided having a straight, pre-formed socket with an internal diameter and with an end opening having enough clearance to allow a mating spigot section having a given external diameter to be inserted into the socket end opening. After the spigot end is inserted to a given depth, the socket is heated sufficiently so that the internal diameter of the socket end comes into contact with the external diameter of the spigot end, the molecularly oriented pipe being in a rubbery state and exhibiting a low elastic modulus which allows the socket end to conform tightly to the spigot end external diameter without deforming the spigot end.

The invention concerns a pipe arrangement comprising a protective device for protecting against environmental influences, the pipe arrangement comprising: a) a pipe joint which includes at least two pipe ends (1, 2) which are fixed together by means of a mechanical joint (3) and in which the pipe ends (1, 2) and also the mechanical joint are closed with a deformable hollow body (4), or b) a pipe (1) with a pipe opening (14), for example a leak, through which a medium which is disposed within the pipe can escape, wherein the pipe (1) is enclosed by a deformable hollow body where the pipe opening (14) is and wherein the pipe (1) is covered by the hollow body (4) in a predetermined portion on both sides of the opening (14), or c) a pipe having a pipe opening on which a sprinkler of a sprinkler installation is mounted, wherein the pipe (1) and also the sprinkler outlet is enclosed by a deformable hollow body (4) where the sprinkler is fixed to the pipe so that the hollow body (4) surrounds both the pipe end (1) and also the sprinkler outlet and a part of the sprinkler, or d) a pipe of a pipe system, wherein the pipe (1) is formed from two pipe portions which are connected together in positively locking relationship, for example by a welding process, a soldering process, a gluing process or the like, and wherein in the region of the positively locking connection the pipe is enclosed or covered by a deformable hollow body, or e) a pipe of a pipe system, wherein the pipe is enclosed by a deformable hollow body and where the hollow body (4) encloses the pipe (1) the pipe is carried by a suspension (13) which preferably has a material different from the material of the pipe.

A sleeve is provided for covering a pipe joint formed between two pipes that are coupled to one another to form a tube. The sleeve comprises a heat-shrinkable material that is configured to conform to the first and second pipes when heated to cover the pipe joint.

The present invention relates to a pipe connection (1), which comprises at least one end of a plastic pipe (2) or metal plastic composite pipe (2) and one connecting element (3) with at least one support body (4, 4a) provided with circumferential ribs (5, 5a, 5b, 5c), onto which the end of the pipe (2) is slid, wherein, for the expansion ratio R(exp) of the pipe connection (1), the following applies:

0.05<R(on)=[D(max)/D(internal)]1<0.35

wherein D(max) stands for the maximum external diameter of the circumferential ribs (5, 5a, 5b, 5c) and D(internal) for the internal diameter of the pipe (2).

The present invention relates to a connecting element (1) for producing a pipe connection (6) between the connecting element (1) and a plastic pipe (7) or a metal-plastic composite pipe by using axial pressing technology, wherein the connecting element (1) has at least one support body (2, 2a) provided with circumferential external ribs (3, 3a, 3b) for press-fitting an expanded end (8) of the pipe (7) onto, and comprises at least one circumferential collar (5, 5a), wherein the connecting element (1) between the circumferential collar (5, 5a) and the nearest circumferential external rib (3b) to said circumferential collar (5, 5a) further comprises a pre-stop (4, 4a) for limiting the sliding onto of the expanded end (8) of the pipe (7), wherein the distance between the edge of the pre-stop (4, 4a) facing the circumferential external ribs (3, 3a, 3b) and the edge of the circumferential collar (5, 5a) facing the pre-stop (4, 4a) is 0.10 times to 0.30 times the length of the support body (2, 2a). Furthermore, the present invention relates to a pipe connection (6) between an expanded end (8) of an all-plastic pipe (7) or of a plastic composite pipe (7) and a connecting element (1), comprising an expanded end (8) of an all-plastic pipe (7) or of a plastic composite pipe (7); and a connecting element (1) according to the present invention.

The present invention relates to a connecting element (1) for producing a pipe connection (6) between the connecting element (1) and a plastic pipe (7) or a metal-plastic composite pipe by using axial pressing technology, wherein the connecting element (1) has at least one support body (2, 2a) provided with circumferential external ribs (3, 3a, 3b) for press-fitting an expanded end (8) of the pipe (7) onto, and comprises at least one circumferential collar (5, 5a), wherein the connecting element (1) between the circumferential collar (5, 5a) and the nearest circumferential external rib (3b) to said circumferential collar (5, 5a) further comprises a pre-stop (4, 4a) for limiting the sliding onto of the expanded end (8) of the pipe (7), wherein the distance between the edge of the pre-stop (4, 4a) facing the circumferential external ribs (3, 3a, 3b) and the edge of the circumferential collar (5, 5a) facing the pre-stop (4, 4a) is 0.10 times to 0.30 times the length of the support body (2, 2a). Furthermore, the present invention relates to a pipe connection (6) between an expanded end (8) of an all-plastic pipe (7) or of a plastic composite pipe (7) and a connecting element (1), comprising an expanded end (8) of an all-plastic pipe (7) or of a plastic composite pipe (7); and a connecting element (1) according to the present invention.

A heating system for heating a heat shrink layer of a heat shrink component during a heat shrink process includes a heating unit arranged in thermal contact with at least a part of the heat shrink layer and heating the heat shrink layer to a heat shrink temperature. The heating unit has a first heating zone and a second heating zone. The first heating zone has a different heating energy than the second heating zone for a period of time of the heat shrink process.

The present invention relates to a female press fitting that is provided with a visual indicator that indicates whether the female press fitting has been properly crimped onto a male pipe or fitting.

The present invention relates to a female press fitting that is provided with a visual indicator that indicates whether the female press fitting has been properly crimped onto a male pipe or fitting.

A vehicle includes a prime mover including at least two fluid conduits, and a heat shrink sleeve provided around the at least two fluid conduits. The heat shrink tube forms a conduit bundle of the at least two fluid conduits.