Abstract: A ceramic chromium oxide coating produced by applying a conventional chromium oxide coating to a substrate and wholly or partly fusing the conventional chromium oxide coating by subjecting the chromium oxide coating to laser irradiation. The chromium oxide coating can optionally contain silica and/or alumina and less than 1 percent of metal.The chromium oxide coating can be employed for the internal and/or external protection of components in equipment for production and transport of oil and gas under water.

Abstract: A ceramic chromium oxide coating produced by applying a conventional chromium oxide coating to a substrate and wholly or partly fusing the conventional chromium oxide coating by subjecting the chromium oxide coating to laser irradiation. The chromium oxide coating can optionally contain silica and/or alumina and less than 1 percent of metal.The chromium oxide coating can be employed for the internal and/or external protection of components in equipment for production and transport of oil and gas under water.

Abstract: Shut-down valve intended for use in a subwater/subliquid position, for instance in subsea pipelines for liquid/gas. It is an object to prevent the medium surrounding the valve, to penetrate the pipesystem which is being served by the valve, and at the same time counteract the through-flowing fluid to be released into the surrounding medium when the valve is to undergo maintenance. The valve comprises a valve housing comprising a cylindrical valve chamber (12,13), which is intended for being oriented along the direction of flow F of the liquid/gas, and a radially arranged valve chamber (14), which is closable with a removable bonnet (9), and also a clack-valve body (3) which is movable between a closed position and an open position.

Abstract: Apparatus for maintenance of the moveable pipe sleeves (52), bearing surface and seals of a ball valve. The apparatus has a bonnet (7) designed to be secured to and form a tight connection with a valve flange (53) and fastened to the underside of the bonnet (7) there are: honing tool for honing of spherical sealing surfaces (56) and conical sealing surfaces (51) on a valve housing; dismounting tool for dismounting of old sealing rings on the pipe sleeves (52); mounting tool for mounting of new sealing rings on the pipe sleeves (52); rotating mechanism (8) for 90 degrees rotation of the honing tool (1) and the pipe sleeves (52).

Abstract: A device for clamping and locking of cover (6) against a flange (7) for subsea installations, particularly in connection with production of oil and/or gas, and particularly for clamping and locking of a valve housing cover (6) against a flange (7) on a valve housing (9) which is coupled into a subsea pipeline (1). Mainly U-formed locking segments (4) are designed with a certain clearance, preferably approx. 3 mm, so that the distance between the opposite facing, parallel contact and sealing surfaces of the locking segment (4) exceeds the total thickness of the cover (6) and flange (7) .

Abstract: A ball valve device for subsea applications, capable of being dismantled for inspection and maintenance without disrupting normal operations of the pipeline and without causing leakage into or out of the pipeline is disclosed. The ball arrangement of the valve has an upper ball member (3), and a lower ball member (4) in which its upper ball member (3), includes the main packings of the valve. The lower ball member (4) includes two axial withdrawable sleeves (13). When the valve is open, the sleeves (13) can be withdrawn outwardly for intervention with guiders in the valve housing (1) and thereby form a tight, continuous passageway which extends from one of the openings in said valve housing (1) to the second opening in said valve housing (1). The axial withdrawable sleeve (13) can be moved inwards to a position where it stands free from its other guiders when said ball arrangement rotates during closing of said valve.