GB/T 5777-2019无缝和焊接(埋弧焊除外)钢管纵向和/或横向缺欠的全圆周自动超声检测国家标准
英文:Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the...
英文:Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the...