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See Chinese contents: GB/T 7734-2015 GB/T 7734-2015: Method for ultrasonic testing of clad steel plates
This Standard specifies the general requirements, testing methods, comparison specimen, testing equipment and commissioning of the method for ultrasonic testing of clad steel plates; the evaluation and classification of the unbounded portion, and etc. This Standard is applicable to test for combination quality of clad surface between explosive welding clad steel plate and the rolling clad steel plate with substrate thickness of more than 4mm. The ultrasonic testing of the clad steel plate with other specifications can also refer to this Standard.
