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ASTM B622 is a standard specification for seamless nickel and nickel-cobalt alloy pipes and tubes, and the following is a detailed breakdown of the standard: 1. Overview of the standard Standard number: ASTM B622 Scope of application: The ASTM B622 standard regulates the requirements for seamless nickel and nickel-cobalt alloy tubing, including pipes and tubes, that are made of specific nickel and nickel-cobalt alloys with excellent corrosion resistance and mechanical properties. These alloy pipes are widely used in petroleum, chemical, marine engineering, aerospace and other fields for the manufacture of corrosion-resistant pipes, heat exchangers, reactors and other equipment. Third, the main requirements The ASTM B622 standard specifies in detail the following aspects of seamless nickel and nickel-cobalt alloy tubing, including pipes and tubing: Chemical composition: The content range of various elements in the alloy is specified to ensure that the chemical composition of the product meets the requirements of the standard. Dimensional tolerance: The dimensional tolerances such as the outer diameter, wall thickness, and length of the pipe are specified to ensure the dimensional accuracy of the product. Mechanical properties: including test methods and requirements for tensile strength, yield strength, elongation after fracture and other indicators to ensure that the mechanical properties of the product meet the needs of use. Surface quality: The surface finish, defects, etc. of the pipeline are specified to ensure that the surface quality of the product meets the standard requirements. Manufacturing process: It covers the manufacturing process of pipes, such as forging, hot rolling, cold rolling, solution annealing and rust removal, etc., to ensure that the manufacturing process of the product meets the standard requirements. Inspection and testing: It stipulates the inspection and testing methods of products, including chemical composition analysis, mechanical property testing, dimensional measurement and surface quality inspection, etc., to ensure that the quality of products meets the standard requirements. 4. Precautions When selecting and using ASTM B622 seamless nickel and nickel-cobalt alloy tubing, it is important to ensure that the product meets the requirements specified in the standard. In the process of processing and use, the relevant safety operation procedures and standards should be strictly adhered to to ensure the safety of personnel and equipment. As technology continues to advance and the market continues to evolve, the ASTM B622 standard may also be revised and updated. Therefore, when using the standard, attention should be paid to its latest version and revisions. In summary, ASTM B622 is an important standard specification for seamless nickel and nickel-cobalt alloy pipes and tubes, which specifies in detail the requirements for alloy composition, dimensional tolerance, mechanical properties, surface quality, manufacturing process, and inspection and testing, etc., and provides an important technical basis and guarantee for the production and use of related products.Huanickel?related?products?strictly?implement?this?standard.?For?more?information?about?the?standard?and?the?corresponding?product?information,[email protected] |