标 准 编 号：GB/T 20490-2006
简体中文标题：承压无缝和焊接(埋弧焊除外)钢管分层的超声检测
繁体中文标题：承压无缝和焊接(埋弧焊除外)钢管分层的超声检测
English Name：Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes - Ultrasonic testing for the detection of laminar imperfections

简介： 本标准归定了无缝和焊接钢管分层欠缺的超声检测要求