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See Chinese contents: GB/T 3310-2023 GB/T 3310-2023: Ultrasonic testing method of copper and copper alloy bars
This document describes the methods for ultrasonic testing of copper and copper alloy bars. The content includes method principles, general requirements, instruments and equipment, selection of testing types, comparison test blocks, testing steps, defect assessment, quality grades, and testing reports. This document is applicable to the ultrasonic testing of circular, rectangular, square and regular hexagonal copper and copper alloy bars (hereinafter referred to as and quot;bars and quot;) with a diameter of not less than 10 mm by the Type A pulse longitudinal wave reflection method.
