Download or read book GB T 31925 2015 Translated English of Chinese Standard GBT 31925 2015 GB T31925 2015 GBT31925 2015 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2016-09-02 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the piezoelectric ultrasonic test principles, test methods, comparison specimen, flaw-detection equipment, test procedure, result assessment, test report of seamless stainless steel pipe with the ratio of wall-thickness to outside diameter in the range of 0.2~0.3.