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ASTM B658/ASTM B658M is a standard specification for seamless and welded zirconium and zirconium alloy nominal tubes, published by the United States Society for Testing and Materials (ASTM). Here are some detailed explanations of the standard: 1. Overview of the standard Standard number: ASTM B658/B658M Title: Standard Specification for Seamless and Welded Zirconium and Zirconium Alloy Pipe Scope of application: The standard covers three levels of seamless and welded zirconium and zirconium alloy pipes, including pure zirconium, zirconium-tin alloy and zirconium-niobium alloy, etc. Second, the main requirements Chemical Composition & Grade: The standard specifies the chemical composition requirements for different grades of zirconium and zirconium alloys, such as R60702 grade is pure zirconium, R60704 grade is zirconium-tin alloy, and R60705 grade is zirconium-niobium alloy. The requirements for chemical composition ensure the corrosion resistance and mechanical properties of the pipe in a specific application. Manufacturing method and size requirements: Seamless pipes should be manufactured by a seamless method that meets the requirements of the standard, while welded pipes can be manufactured according to the agreement between the buyer and the fabricator. The standard specifies in detail the size requirements such as the outer diameter, wall thickness, length and allowable deviation of the nominal tube to ensure the interchangeability and consistency of the product. Performance Requirements: The pipe should have certain mechanical properties and corrosion resistance to meet the needs of specific applications. The finished pipe should be fairly straight, have smooth ends, and be free of burrs, cracks, nicks, blistering, and other harmful defects. Inspection & Testing: Each batch of pipes should be inspected and tested as necessary, including chemical composition analysis, mechanical property testing, etc., to ensure that the product meets the requirements of the standard. Additional hydrogen and nitrogen content testing may also be required for certain batches. Packaging & Labeling: The pipe should be properly packaged before leaving the factory to prevent damage during transportation and storage. The product should be clearly marked, including the standard number, material name, grade number, size information, etc., for easy identification and traceability. Third, the field of application ASTM B658/B658M seamless and welded zirconium and zirconium alloy nominal tubes are widely used in various fields such as: Petrochemical Pharmaceutical industry Aerospace field. 4. Precautions When using the ASTM B658/B658M standard, you should pay attention to the differences between different versions and choose the appropriate version according to the actual needs. Before use, you should carefully read the content of the standard and understand the requirements and restrictions to ensure that the quality and performance of the product meet the requirements of the standard. In the process of manufacturing and inspection, the provisions and requirements in the standard should be strictly observed to ensure the qualification and reliability of the product.Huanickel?related?products?strictly?implement?this?standard.?For?more?information?about?the?standard?and?the?corresponding?product?information,[email protected] |