AWS A4.2M A4.2-1997 Standard Procedures for Calibrating Magnetic Instruments to Measure the Delta Fe
标准简介
AWS A4.2M A4.2-1997 Standard Procedures for Calibrating Magnetic Instruments to Measure the Delta Ferrite Content of Austenitic and Duplex Ferritic-Austenitic Stainless Steel Weld Metal
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