A method of joining dissimilar material pipes includes inserting an end portion of a first pipe into a heat shrink tube, performing heat treatment on the first pipe joined to the heat shrink tube to shrink the heat shrink tube, press-inserting the end portion of the first pipe to which the heat shrink tube is joined into a second pipe, and plastic deforming and joining a plastic deformation portion where the first pipe, the second pipe, and the heat shrink tube overlap. The joined dissimilar material pipes have improved airtightness and can operate at a high pressure and an extremely low temperature.

A method of manufacturing a clamping ring for a cold-expansion joining system includes providing an extruded pipe part made of a cross-linked polymeric material where, while extruding the pipe part, the inner diameter is formed bigger than the outer diameter of a flexible cross-linked polymeric pipe onto which the clamping ring is positioned before making a pipe connection; providing an injection molded annular part having an inner diameter formed smaller than the inner diameter of the extruded part; and bonding the parts together to form a clamping ring having an inward protruding stop edge at one of its ends. The embodiments further relate to a clamping ring formed from an extruded pipe part made of a cross-linked polymeric material and an injection molded annular part bonded together to form a unitary structure including an inward protruding stop edge at one of its ends.

A method of manufacturing a clamping ring for a cold-expansion joining system includes providing an extruded pipe part made of a cross-linked polymeric material where, while extruding the pipe part, the inner diameter is formed bigger than the outer diameter of a flexible cross-linked polymeric pipe onto which the clamping ring is positioned before making a pipe connection; providing an injection molded annular part having an inner diameter formed smaller than the inner diameter of the extruded part; and bonding the parts together to form a clamping ring having an inward protruding stop edge at one of its ends. The embodiments further relate to a clamping ring formed from an extruded pipe part made of a cross-linked polymeric material and an injection molded annular part bonded together to form a unitary structure including an inward protruding stop edge at one of its ends.

A pipe support clip for securing at least one pipe of a pipe system to a bracket comprising at least one bracket portion comprises a base portion having at least one retaining structure and a grip portion defining a grip passageway. The at least one retaining structure is adapted to engage the at least one bracket portion to support the grip passageway adjacent to a desired stub location. The grip passageway is sized and dimensioned to receive the pipe. The grip portion is configured to engage at least a portion of the pipe to inhibit movement of the pipe relative to the base portion.

A pipe support clip for securing at least one pipe of a pipe system to a bracket comprising at least one bracket portion comprises a base portion having at least one retaining structure and a grip portion defining a grip passageway. The at least one retaining structure is adapted to engage the at least one bracket portion to support the grip passageway adjacent to a desired stub location. The grip passageway is sized and dimensioned to receive the pipe. The grip portion is configured to engage at least a portion of the pipe to inhibit movement of the pipe relative to the base portion.