Abstract: A threaded tubular connection for drilling or operating hydrocarbon wells contains a portion of a tubular element with a male end having an axis of revolution and provided with a first threading extending about the axis of revolution, the male end portion being complementary with a portion of a tubular element with a female end having an axis of revolution and provided with a second threading extending about the axis of revolution, the male and female end portions being capable of being connected by makeup, each of the male and female end portions further comprising a sealing surface with a metal-metal interference, wherein the threading and the sealing surfaces of the male and female end portions are coated with a metallic anti-corrosion and anti-galling layer wherein zinc (Zn) is the major element by weight. One of the metallic anti-corrosion and anti-galling layers is coated with a passivation layer and the other is at least partially coated with a lubricant layer.

Abstract: A steel wire has a microstructure that is completely ferritic, a mixture of ferrite and cementite or a mixture of ferrite and pearlite and has a weight content of carbon C such that C<0.05% and a weight content of chromium Cr such that Cr<12%. The process for drawing the wire comprises: at least one first uninterrupted series of steps of drawing the wire from a diameter D to a diameter d?, at least one second uninterrupted series of steps of drawing the wire of diameter d? to a diameter d, and one or more intermediate steps between the first and second uninterrupted series of steps of drawing the wire, the wire having a temperature less than or equal to 300° C. during the or each intermediate step.

Abstract: 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.

Abstract: The invention concerns a threaded portion of a tubular element for a threaded tubular connection having an axis of revolution, the portion comprising a threading extending over its outer or inner peripheral surface, and a first sealing surface on the peripheral surface, the first sealing surface being capable of producing metal-metal interference with a corresponding second sealing surface belonging to a complementary threaded portion. The threading and the first sealing surface are coated with a metallic anti-galling layer wherein zinc (Zn) is the major element by weight, the metallic anti-galling layer being at least partially coated with a lubricant layer comprising a resin and a dry solid lubricant powder dispersed in the resin.

Abstract: The steel wire of diameter d expressed in mm has a completely ferritic, pearlitic or ferritic-pearlitic microstructure and a weight content of carbon C such that 0.05%?C<0.4%, a weight content of chromium Cr such that Cr<12% and a maximum tensile strength R, expressed in MPa, such that R?175+930.C?600.In(d) and R?1500 MPa.

Abstract: A radial tire includes a crown reinforcement or belt having a lightened belt structure. The lightened belt structure is constructed of a multilayer composite laminate that includes a first layer of rubber that radially surmounts, in a direction Z, two other layers of rubber. The first layer of rubber includes weakly heat-shrinkable textile circumferential reinforcers, for example, made of nylon or polyester. The two other layers of rubber are reinforced with monofilaments of high tensile steel. The first reinforcers have a diameter between 0.40 mm and 0.70 mm and a density between 70 and 130 threads/dm, and the second and third reinforcers have a diameter between 0.20 mm and 0.50 mm and a density between 120 and 180 threads/dm.

Abstract: A radial tire includes a crown reinforcement or belt having a lightened belt structure. The lightened belt structure is constructed of a multilayer composite laminate that includes a first layer of rubber that radially surmounts, in a direction Z, two other layers of rubber. The first layer of rubber is reinforced with first reinforcers, which are circumferential heat-shrinkable polyester textile reinforcers. The two other layers of rubber are reinforced with second and third reinforcers, which are monofilaments of high tensile steel. The first reinforcers have a diameter between 0.40 mm and 0.70 mm and a density between 70 and 130 threads/dm, and the second and third reinforcers have a diameter between 0.20 mm and 0.50 mm and a density between 120 and 180 threads/dm.

Abstract: A process for drawing a steel wire, in which the wire has a carbon content by weight C of 0.4%?C?0.74%, includes an uninterrupted series of drawing steps. The drawing steps draw the wire from a diameter d? to a diameter d, with d? and d being expressed in mm, and with a true strain ?? of the steel wire being given by ??=2×ln(d?/d), with ??>4.

Abstract: The process for drawing a steel wire applies to a wire having a carbon content by weight C such that 0.4%?C?0.74%. The process comprises an uninterrupted series of drawing steps (7001-700m) of the wire from a diameter d? to a diameter d, d? and d being expressed in mm, in which the true strain ??=2.ln(d?/d) is such that ??>4.

Abstract: The steel wire of diameter d expressed in mm, has a carbon content by weight C, expressed in %, such that 0.4%?C?0.5% and a maximum tensile strength R, expressed in MPa, such that R?A.(920.C+500)/d1/2 with A=0.87.

Abstract: The steel wire of diameter d expressed in mm, has a carbon content by weight C, expressed in %, such that 0.5%?C?0.6% and a maximum tensile strength R, expressed in MPa, such that R?A·(920·C+500)/d1/2 with A=1 and R?2950 MPa.

Abstract: The steel wire of diameter d expressed in mm, has a carbon content by weight C, expressed in %, such that 0.6%?C?0.74% and a maximum tensile strength R, expressed in MPa, such that: for d<0.17, R?A.(920.C+500)/d1/2 with A=0.96, for 0.17?d?0.23, R?A.(920.C+500)/d1/2 with A=1.24.

Abstract: A radial tyre, which is useable for a passenger vehicle or a van, has a crown reinforcement or belt having a lightened belt structure. The lightened belt structure is constructed of a multilayer composite laminate that includes a first layer of rubber that radially surmounts, in a direction Z, two other layers of rubber. The first layer of rubber includes weakly heat-shrinkable textile circumferential reinforcers, for example, made of nylon or polyester. The two other layers of rubber are reinforced with monofilaments of high tensile steel. The multilayer composite laminate allows the tyre's weight and rolling resistance to be reduced without impairing the tyre's cornering stiffness and, therefore, road holding and handling. At the same time, the multilayer composite laminate enables the tyre to have a running endurance that is at least equivalent if not better than that of a conventional tyre.

Abstract: Radial tyre, notably, for a passenger vehicle or van, with a lightened belt structure (10) comprising a multilayer composite laminate (10a, 10b, 10c) of specific construction with a first layer (10a) of rubber (C1) comprising heat-shrinkable textile circumferential reinforcers (110) made of polyester, for example PET or PEN, this first layer radially (in the direction Z) surmounting two other layers (10b, 10c) of rubber (C2, C3 respectively) reinforced with monofilaments (120, 130) of high tensile steel; this multilayer composite laminate allows the weight and rolling resistance of the tyres to be reduced without impairing the cornering stiffness and, therefore, road holding and handling, while at the same time offering running endurance that is at least equivalent if not better.