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WO/2023/168884A1 |
A method for preparing a spiral heat exchange tube of a steam generator of a high temperature gas-cooled reactor, comprising steps of: perforation and annealing of a pierced billet; pickling and inspection of the pierced billet; multi-pa...
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WO/2023/158790A1 |
A coated metal pipe for use as an automotive fluid transport tube, including a tubing formed into a circular cross sectional profile. An intermediate layer applied over said tubing. An outer paint topcoat incorporating a graphene-derivat...
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WO/2023/151433A1 |
An environmentally friendly recycling grade-maintaining production method for a 6-series high-formability automobile plate, which method comprises the following steps: step 1, adding recycled high-formability 6-series automobile plate sc...
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WO/2023/149364A1 |
Provided is a steel pipe comprising: a mechanically processed pipe end face having an indentation, which is a mark of measurement by the indentation method; and at least one of an outer peripheral face and an inner peripheral face provid...
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WO/2023/146084A1 |
The present invention relates to an apparatus for manufacturing a spiral gasket, and a manufacturing method thereof, and more specifically relates to an apparatus which manufactures a spiral gasket by forming the outside diameter of a sp...
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WO/2023/134616A1 |
Disclosed is a pipeline, having a corrosion resistant layer and a base layer in a thickness direction. The corrosion resistant layer is at least located on the inner wall of the pipeline. In addition to Fe and inevitable impurities, the ...
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WO/2023/131493A1 |
The invention relates to a method and a device for the production of dimensionally accurate sheet metal components (3).
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WO/2023/123859A1 |
A graphene/copper composite deformed copper-chromium-zirconium alloy layered strip material and a preparation method therefor. An embodiment comprises: first carrying out ambient temperature equal channel angular pressing (ECAP) and cryo...
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WO/2023/128804A1 |
The invention relates to automatic welding machines for forming longitudinal ribs on tubes for heat exchangers. The present automatic welding machine for forming longitudinal ribs on tubes comprises, arranged symmetrically about a circle...
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WO/2023/117464A1 |
The invention relates to a method and a device for the production of sheet metal parts (3) that are characterized by substantially reduced springback.
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WO/2023/118516A1 |
A low carbon steel welded tube for low internal pressure applications, wherein the pressure in the tube is, in use, less than 10 kPa, wherein the low carbon steel constituting the welded tube is a hot-rolled steel strip having a thicknes...
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WO/2023/110810A1 |
The invention relates to a steel-based metal wire for reinforcing rubber items selected from among vehicle tyres, tracks and conveyor belts which is obtained by means of a method comprising at least one step of producing a steel wire, re...
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WO/2023/093111A1 |
The present invention relates to the technical field of metal processing, and in particular to high Cr-Si alloyed coating-free hot forming steel and a hot rolling preparation method therefor. For the problems existing in the prior art th...
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WO/2023/088799A1 |
A thin-walled pipe according to the invention has the following features: a thin metal flat material (22), rolled or bent to form a pipe, having a wall thickness of 0.05-1.00 mm, the longitudinal edges (24, 26) of which are connected tog...
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WO/2023/087957A1 |
The present invention relates to an aluminum pipe having an internal thread. The aluminum pipe is made of a multi-layer composite material; the multi-layer composite material comprises a core material and a composite layer; the alloy of ...
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WO/2023/090307A1 |
A misalignment measurement system according to the present invention comprises: a marker plate on which is drawn a pattern that serves as a length reference for length measurement; an imaging unit which images, as image data, the marker ...
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WO/2023/080301A1 |
An aluminum plate extrusion apparatus, according to the present invention, comprises: a preheating unit for preheating, by a predetermined temperature, a billet having a quadrangular cross-section; a cutting unit for cutting the billet i...
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WO/2023/075594A1 |
The invention relates to a method for making at least one threaded bushing in a hollow profile, comprising the steps of: • a) providing a hollow profile (1); • b) friction drilling the hollow profile (1) using a friction drilling too...
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WO/2023/036206A9 |
A preparation method for a titanium metal bipolar plate substrate of a hydrogen fuel cell, comprising: defining [O]dang as the mass percent of the total content of impurity elements of a titanium plate blank, and the mass percent of the ...
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WO/2023/053837A1 |
Provided are a rectangular steel pipe and a method for manufacturing the same, and a hot-rolled steel sheet and a method for manufacturing the same. This rectangular steel pipe and hot-rolled steel sheet have a prescribed component compo...
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WO/2023/046750A1 |
A device (5) for shaping a tubular hollow element (1) comprises a shaping matrix (9) for arranging on the outer side of the hollow element (1), a mandrel (10) for arranging inside the hollow element (1) and a shaping device (20) with a m...
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WO/2023/029607A1 |
The present invention relates to the technical field of masts for ships, and specifically relates to a method for preparing an impact-resistant mast for ships, comprising the following steps: (1) preparing a column rod core material; (2)...
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WO/2023/034887A1 |
Methods described herein can include drawing materials to form a drawn filled tubing (DFT) wire. The materials can include a core material, a first layer of a biocompatible material disposed exterior to the filler material, a magnetic ma...
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WO/2023/020767A1 |
A method for connecting a first tube and a capillary tube for a refrigerant circuit of a refrigeration appliance comprises the following: inserting the capillary tube into an end portion of the first tube and plastically deforming the en...
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WO/2023/007925A1 |
A steel pipe roundness prediction method according to the present invention predicts the roundness of a steel pipe after an expanding process in a steel pipe manufacturing process which includes: an edge bending process for performing an...
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WO/2023/007926A1 |
A method for generating a roundness prediction model of a steel pipe according to the present invention involves: generating, offline, a plurality of pieces of training data that includes an operation condition data set and a set of roun...
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WO/2023/284391A1 |
Disclosed is a processing method for a stainless steel bar, comprising: (1) heating a steel ingot at a heating temperature of 1200°C - 1270°C; (2) using a total compression ratio greater than 3, forging a blank to obtain a square bille...
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WO/2023/274807A1 |
The invention relates to a process for manufacturing a profiled part (2) from a semi-finished tubular metal product (1) in a forming tool using hydroforming and is characterized in that prior to or after the hydroforming operation, at le...
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WO/2023/276644A1 |
The present invention provides: a square steel tube in which the ductility of the corners thereof is increased, and a method for manufacturing the same; and a building structure employing said square steel tube. A square steel tube 10 ...
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WO/2023/277768A1 |
The invention concerns a barrel (10) for a launching device (1) for launching projectiles (100) with a propellant charge (110) where the barrel (10) is arranged with a cross-section (20) in the form of a curve of constant width. The inve...
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WO/2023/272609A1 |
The invention discloses a high-precision seamless pipe having a special-shaped hexagonal cross-section with a circle inside for use in nuclear power, which is made of stainless steel or a corrosion-resistant alloy having an elongation ra...
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WO/2022/263810A1 |
A method of manufacturing a double-walled elbow pipe segment, comprising the steps of: (a) providing an inner pipe member; (b) providing at least one first support member, and positioning said at least one first support member coaxially ...
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WO/2022/248299A1 |
A method for the production of a hollow body with a spatially varying wall thickness along a longitudinal axis (24) of the hollow body is provided, wherein a hollow body blank (36) which extends on the longitudinal axis between a first e...
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WO/2022/251826A1 |
A shaft assembly comprises a hollow shaft and at least one working component disposed therein. A method of forming the shaft assembly includes a step of providing at least one generally planar preform. The preform is then formed into a "...
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WO/2022/244383A1 |
This apparatus for detecting the positions of a seam portion and a heated portion in a welded steel pipe detects the position of a seam portion in a welded steel pipe and the position of a heated portion generated due to the seam portion...
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WO/2022/240317A1 |
The invention relates to ferrous metallurgy, and more particularly to the secondary treatment of molten iron or steel using wire, and even more particularly to wire with fillers consisting of active reagents. Claimed is a wire for second...
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WO/2022/234793A1 |
This framework member is formed by cold press-forming a steel plate. The framework member has a closed cross-sectional portion having a closed cross section perpendicular to the lengthwise direction, and the closed cross-sectional portio...
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WO/2022/234792A1 |
This skeleton member is formed by hot-stamping a steel sheet. The skeleton member is so formed as to have a closed cross-sectional part in which a cross-section perpendicular to the longitudinal direction of the member is closed. The clo...
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WO/2022/234791A1 |
This framework member is formed by hot-stamping a steel plate. The framework member has a closed cross-sectional portion having a closed cross section perpendicular to the lengthwise direction, and the closed cross-sectional portion has ...
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WO/2022/221929A1 |
The present invention comprises a plant for producing helical tubing that can be assembled in trailers (1), ferries (2) and container structures (3) that is noteworthy for very fast production speeds and the use of steel sheet coils up t...
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WO/2022/214233A1 |
The invention relates to a device (1) for continuously producing an at least partly hollow shaft having a varying inner diameter, comprising at least two forging tools (3) that are arranged centrally symmetrically about a forging axis (2...
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WO/2022/215459A1 |
The roundness prediction method for steel pipe according to the present invention predicts, in steel pipe manufacturing steps including a U-press step for forming a steel plate into a formed body having a U-shaped cross section by means ...
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WO/2022/215458A1 |
A method of generating a steel-pipe roundness prediction model according to the present invention executes, multiple times, numerical calculation including an operation condition data set as input data and roundness information of a stee...
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WO/2022/201078A1 |
An apparatus for thickening a tube at its intermediate portion is disclosed. The apparatus includes a first support member, that is configured to support an outer surface of the tube. At least a portion of the first support member is def...
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WO/2022/201014A1 |
Present disclosure relates to an apparatus for thickening a tube at its intermediate portion along an inner surface. The apparatus includes a first support member for supporting outer surface of the tube and a mandrel assembly for suppor...
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WO/2022/194547A1 |
According to various embodiments, a vacuum chamber body (151) can comprise: a plurality of chamber outer walls (151a to 151e) which peripherally surround a cavity (151h), of which a first chamber outer wall (151a) delimits the cavity (15...
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WO/2022/194851A1 |
Method for producing a pipe having an inner pipe (5) having topographic structures arranged on the inside and having a coating (8) arranged on the outside, comprising providing at least two pipe shell segments (1) each having an inner wa...
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WO/2022/183522A1 |
A hot rolled seamless steel tube and a deformation and phase transformation integrated control method for structure thereof, belonging to the field of hot rolled seamless steel tube production. The elements included in the hot rolled sea...
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WO/2022/186055A1 |
This molding system comprises: a heating unit that heats a plated metal material by applying electrical current to the metal material; a molding die for molding the heated metal material; and a plating deviation suppression mechanism for...
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WO/2022/174607A1 |
A high-performance tungsten alloy bar and a preparation method therefor. The bar comprises the following components in percentage by mass: 90-95% of tungsten, 3.5-7% of nickel, 1.5-3% of iron and the balance of inevitable impurities. The...
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