Disclosed is a connection comprising first and second lined tubular members having a coincident bore and a protective ring. The first lined tubular member has a pin end and the second lined tubular member has a box end. Each lined tubular member includes a tubular body, an annular liner, and a mortar filled annulus therebetween. The mortar filled annulus has an annular recess therein at at least one of the pin end and box end for receiving a part of the protective ring. The part received may be a flange on the ring.

An adapter (14) allows direct connection of a handheld spray device (10) to paint cans (12, 12A, 12B, 12C), of varying dimensions. The adapter (14) includes a cage (60) for holding the paint can (12, 12A, 12B, 12C), a cap (62) that connects the cage (60) to the handheld spray device (10), and a gasket (64) that seals the open upper end of the paint can (12, 12A, 12B, 12C) to the cap (62). The adapter (14) may also include a suction tube extension 66 that is connectable between the pump inlet (52) and the suction tube (54) of the spray device (10).

An adapter (14) allows direct connection of a handheld spray device (10) to paint cans (12, 12A, 12B, 12C), of varying dimensions. The adapter (14) includes a cage (60) for holding the paint can (12, 12A, 12B, 12C), a cap (62) that connects the cage (60) to the handheld spray device (10), and a gasket (64) that seals the open upper end of the paint can (12, 12A, 12B, 12C) to the cap (62). The adapter (14) may also include a suction tube extension 66 that is connectable between the pump inlet (52) and the suction tube (54) of the spray device (10).

A protector for a male end or a female end of a tubular drilling or production component for hydrocarbon wells, the end respectively including at least one external thread or internal thread, an annular external surface and an annular internal surface separated by the at least one thread, the protector including a first internal or external thread including at least one first threaded portion including at least one thread with pitch P1 configured to cooperate with the thread of the end to screw the protector onto the end, and a second threaded portion including at least one thread with a pitch P2 different from P1.

A protector for a male end or a female end of a tubular drilling or production component for hydrocarbon wells, the end respectively including at least one external thread or internal thread, an annular external surface and an annular internal surface separated by the at least one thread, the protector including a first internal or external thread including at least one first threaded portion including at least one thread with pitch P1 configured to cooperate with the thread of the end to screw the protector onto the end, and a second threaded portion including at least one thread with a pitch P2 different from P1.

A connector for connecting a fluid pipeline includes an inner socket, which is a columnar body having a channel, and both ends defined as a first end and a second end. The inner socket has a guide portion, an attaching portion, an anti-leak portion and a connecting portion sequentially arranged on the outer side from the first end to the second end; the first end is socketed into an end of a tube by the guide portion; the attaching portion is a spiral concave groove on an outer side of the inner socket for attaching an inner side of the tube; the anti-leak portion is between an end of the tube and the connecting portion for sealing an opening of the tube; and the connecting portion is between the anti-leak portion and the second end and exposed from the tube for connecting another connecting portion of another connector.

A connector for connecting a fluid pipeline includes an inner socket, which is a columnar body having a channel, and both ends defined as a first end and a second end. The inner socket has a guide portion, an attaching portion, an anti-leak portion and a connecting portion sequentially arranged on the outer side from the first end to the second end; the first end is socketed into an end of a tube by the guide portion; the attaching portion is a spiral concave groove on an outer side of the inner socket for attaching an inner side of the tube; the anti-leak portion is between an end of the tube and the connecting portion for sealing an opening of the tube; and the connecting portion is between the anti-leak portion and the second end and exposed from the tube for connecting another connecting portion of another connector.

A sealing device comprising an expanding metal provides for ongoing self-healing capability for use as a seal in conjunction with any downhole device or tool in wellbore applications. The sealing device may be a ferrule, or other type of compression device, that may be used for connecting one device to another device, such as a tube to a fitting, or a communication line to a downhole device. Wellbore fluids activate the expanding metal causing a leak to heal itself.

A sealing device comprising an expanding metal provides for ongoing self-healing capability for use as a seal in conjunction with any downhole device or tool in wellbore applications. The sealing device may be a ferrule, or other type of compression device, that may be used for connecting one device to another device, such as a tube to a fitting, or a communication line to a downhole device. Wellbore fluids activate the expanding metal causing a leak to heal itself.

A tube assembly (12) including an inner tube (13) having an outer thread (15), an outer thread (14) having an inner thread (16) engaging the outer thread (15), at least for securing an angular position between the inner tube (13) and the outer tube (14) is provided. Such a tube assembly should facilitate mounting and maintenance of a reverse osmosis system. To this end, the inner tube (13) includes at least an groove (17) on its outer surface and the outer tube (14) includes an recess (18) on its inner surface, wherein a blocking element is arranged in a space formed by the recess (18) and the groove (17) in overlapping relation with the groove (17) and the recess (18).