in order to obtain results conveniently at home and abroad,ultrasonic detection of welding seam detection of workers,reduce the quality dispute caused by differences in standards,standard GB/T 11345-1989 revised by the international standard ISO 17640-2010,ISO11666-2010,ISO 23279-2010, evolved from the original GB/T 11345-1989 a standard for the GB/T 11345-2013,GB/T29711-2013,GB/T29712-2013 three standard system,ultrasonic detection of welding seam detection and evaluation of workers to reference GB/T 11345-2013,GB/T 11345-2013,GB/T29711-2013,GB/T29712-2013 three standard system should be used in conjunction with.Process of GB/T29711-2013 in the first familiar are not easy to understand,but quoted GB/T 11345-2013 detection and assessment must be familiar with and understanding of GB/T29712-2013,we can make the detection and evaluation of accurate.This paper on the GB/T29712-2013 standards.
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