H26;H48 标准查询与下载

NF A49-875-1:1996 钢管的无损检验.第1部分:检验液压密封性用无缝和焊接铁磁钢管(埋弧焊除外)的自动电磁检验

Non destructive testing of steels tubes. Part 1 : automatic electromagnetic testing of seamless and welded (except submerged arc welded) ferromagnetic steel tubes for verification of hydraulic leak-tightness.

NF A49-875-7:1996 钢管的无损检验.第7部分:纵向缺陷探测用无缝钢管和焊接(除埋弧焊外)钢管的自动全周边超声波试验

Non destructive testing of steel tubes. Part 7 : automatic full peripheral ultrasonic testing of seamless and welded (except submerged arc welded) steel tubes for the detection of longitudinal imperfections.