A tool including a front housing and an expander head ring that is readily attachable and detachable from the front housing. The front housing may be coupled to the tool body, or can be integral with the tool body. The front housing may have a mating end that has one or more locking tabs that are configured to be engaged by the expander head ring. The expander head ring may carry one or more functional elements such as a die set that may be expanded by insertion of an expander extending from the tool such as by manual actuation of the tool. A plurality of expander head rings, each with a different size die set, can be alternatively attached to the front housing, depending on the desired extent of expanding of the pipe or the like with the tool.

Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.

A hand expansion device is capable of expanding pipe ends. The device includes an expanding head, which can be actuated by an electric motor and/or by a hydraulic medium and which has a plurality of segments. The segments can be actuated by an expanding mandrel that can be moved in the direction of a longitudinal axis of the expanding head. The segments are expanded in a direction which is transverse to the movement direction of the expanding mandrel as the result of a first triggering of an expansion process. A second activation of the hand expansion device is only allowed if it is determined that the hand expansion device was rotated around the longitudinal axis a predetermined angle.

An expander tool (1) includes a tool head (2) which includes expanding means (3) insertable inside the end of the pipe (P), and which includes a plurality of spreading elements (4) that are radially movable in relation to a center longitudinal axis (x) of the tool head (2) between a starting position (I) and an outwardly extended expansion position (II), and that have an outer spreading surface (5) configured to press against an interior surface of the end of the pipe (P). Expander tool (1) includes a piston (6) to spread spreading elements (4) by moving along the axis (x) from a retracted piston position (III) to a fully extended piston position (IV) against interior surfaces of the spreading elements (4), and an actuator (7) for moving piston (6). Outer spreading surfaces (5) include a circumferential groove (8) that leaves an undamaged smooth and intact surface to the inner surface.

A refrigerator for storing food includes a multiple-glazed refrigerator door which is configured to be pivotable or slidable, and an access opening which is configured to be closed by the multiple-glazed refrigerator door. The multiple-glazed refrigerator door comprises edge-side spacer elements, a transparent vertical edge, a vertical transparent spacer element comprising a transparent material arranged at the transparent vertical edge of the multiple-glazed refrigerator door, at least one of a horizontal frame element and a vertical frame element configured to have the multiple-glazed refrigerator door be mounted thereon, and at least two transparent glass panes which are spaced apart from each other via the edge-side spacer elements. The access opening is arranged in a vertical plane. No supporting vertical frame element is arranged at the transparent vertical edge of the multiple-glazed refrigerator door.

A lubrication ring for a mechanical expander (1) for sizing large pipes comprises a conventionally manufactured ring (12) made of steel, in particular construction steel. Fluid bores are provided in the ring (12). A part (13) of the lubrication ring (6) is manufactured by an additive manufacturing technology.

A working element operable to expand an end of a tube includes a main body configured to rotate about an axis, a plurality of roller supports movably coupled to the main body, the roller supports movable relative to the main body between a retracted position and an expanded position, and a plurality of rollers coupled to the roller supports such that a distance between a first roller of the plurality of rollers and a second roller of the plurality of rollers increases when the roller supports move toward the expanded position. The rollers are configured to be inserted into the end of the tube when the roller supports are in the retracted position, and the rollers are engageable with an inner circumference of the tube when the main body rotates about the axis to expand the end of the tube.

An electric pipe expander and intelligent control circuit for the electric pipe expander are provided The electric pipe expander includes a pipe expander body and a mandrel sliding cavity disposed on the pipe expander body. A chuck body capable of clamping a pipe to be processed is disposed at an opening end of the mandrel sliding cavity. A mandrel is slidingly connected in the mandrel sliding cavity, an outer side end of the mandrel is provided with an obliquely disposed pipe expanding cone, an inner side end of the mandrel is provided with an elastic body accommodating cavity. Flat keys are disposed on the mandrel, and an elastic body is clamped and disposed between the flat keys and a bottom surface of the elastic body accommodating cavity.

A hydraulic tube expander includes expanding jaws engageable with an interior surface of a tube to expand the tube; a source of hydraulic fluid, a valve located between the source and the expanding jaws and a single-action release actuator operatively coupled to the valve. The valve is moveable between open and closed positions. In the closed position, hydraulic fluid can pass from the source to the expanding jaws and in the open position the hydraulic fluid can pass from the expanding jaws to the source. The actuator is movable between first and second positions. In the first position the valve is in the closed position. Movement of the actuator in a direction from the first position toward the second position moves the valve into the open position.

A metal pipe having an outer diameter of 150 mm to 3,000 mm and a wall thickness of 2 mm to 50 mm, and a method for manufacturing the same. The method includes a pipe-end-portion expansion step of expanding pipe end portions that are located at both ends of a mother pipe and an internal pressure application step that is performed after the pipe-end-portion expansion step and in which the mother pipe is expanded by applying an internal pressure, p, to the entire interior of the mother pipe until the internal pressure, p (MPa), that corresponds to changes in an axial compression amount s (mm), the axial compression amount, s, representing an amount of compression in a pipe axial direction against pipe extreme ends which are the both ends of the mother pipe, becomes a preset maximum internal pressure pmax (MPa), and p and s satisfy a specified formula.