SY/T 6423.8-2017
石油天然气工业 钢管无损检测方法 第8部分:无缝和焊接(埋弧焊除外)钢管纵向和/或横向缺欠的全周自动超声检测
Methods for non-destructive testing of steel pipes in the oil and gas industry - Part 8: Automatic ultrasonic testing of full circumference for longitudinal and/or transverse defects in seamless and welded (except submerged arc welding) steel pipes
SYT6423.8-2017, SY6423.8-2017