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ASTM B862 is a standard specification for titanium and titanium alloy welded pipes, developed and published by the United States Society for Testing and Materials (ASTM). The standard covers a wide range of grades and specifications of titanium and titanium alloy welded pipes, which are suitable for general corrosion-resistant and high-temperature service applications. The following is a detailed analysis of ASTM B862 titanium and titanium alloy welded metric pipes: 1. Overview of the standard Standard number: ASTM B862 Issued by: United States Society for Testing and Materials (ASTM) Scope of application: This standard specifies the requirements for titanium and titanium alloy welded pipes used for general corrosion-resistant and high-temperature services, including requirements for materials, manufacturing processes, mechanical properties, chemical composition, size and surface condition. Second, the main requirements Chemical Composition: Each grade of titanium and titanium alloy welded pipe has its own specific chemical composition requirements, including limits on the content of major alloying elements and impurities. Manufacturing process: The manufacturing process of welded pipes needs to meet the requirements of the standard, including the preparation, welding, heat treatment and surface treatment of the tube blank. Welding is the most critical link in the welded pipe manufacturing process, which affects the quality and performance of welded pipes. Mechanical properties: including tensile strength, yield strength, elongation and impact toughness, etc., which have an important impact on the use of welded pipes. Dimensions and tolerances: The dimensions and tolerances of welded pipes need to comply with standard regulations to ensure the interchangeability and performance of the products. Surface quality: The surface of the welded pipe should be clean and free of defects, without cracks, folding, scars and other defects. Third, the field of application ASTM B862 Titanium and Titanium Alloy Welded Metric Pipe is widely used in several fields due to its excellent corrosion resistance and high-temperature performance, including but not limited to: Aerospace: for engine components, hydraulic systems, etc. Chemical: conveying corrosive media, such as acids, alkalis, etc. Marine engineering: seawater desalination, offshore oil exploitation, etc. Nuclear industry: as a standard pipe for units. Other fields: such as heat exchange equipment, vacuum salt production, automobile industry, medical sports, paper and textile industry, electric power industry, metallurgical industry, chlor-alkali industry, fertilizer industry, etc. Fourth, summary ASTM B862 Titanium and Titanium Alloy Welded Metric Pipe is a high-performance tubing with excellent corrosion resistance and high-temperature properties. The standard specifies in detail the requirements for the material, manufacturing process, mechanical properties, chemical composition, size, and surface condition of welded pipes. When selecting and using, it is necessary to select the appropriate grade and specification according to the specific needs, and strictly adhere to the technical requirements specified in the standard. |