Non-destructive testing of steel tubes - Part 11: Automated ultrasonic testing of the weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections - Amendment 1: Change of ultrasonic test frequency; change of acceptance criteria (ISO 10893-11:2011/Amd 1:2020)
钢管无损检测第11部分:纵向和/或横向缺陷检测用焊接钢管焊缝的自动超声检测修改件1:超声检测频率的改变验收标准的变更