GB/T 5777-2019 無縫和焊接(埋弧焊除外)鋼管縱向和/或橫向缺欠的全圓周自動超聲檢測英文標準名稱:Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections
英文標準名稱:Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections