Home / Standards / GB/T 7735 GB/T 7735 Active Automated eddy current testing of seamless and welded (except submerged arc-welded) steel tubes for detection of imperfections 无缝和焊接（埋弧焊除外）钢管缺欠的自动涡流检测 Standard Type GBT ICS 77.040.20 CCS H26 Status 现行 Issue Date 2016-12-30 Implementation 2017-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会