/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724152449884988.pdf JB/T 4730-2RT
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724152542444244.pdf JB/T 4730-3UT
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724152668506850.pdf JB/T 4730-4MT
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724152785478547.pdf JB/T 4730-5PT
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724152811931193.pdf GB/T 5777-1996 无缝钢管超声波探伤检验方法
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724152848994899.pdf GB/T 7233-87 铸钢件超声探伤及质量评级标准
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724153190039003.pdf GB/T 11345-89 钢焊缝手工超声波探伤
/nzcms_nzweb/nzcms_up/attached/file/20150724/20150724153227222722.pdf JB/T 8467-1996 锻钢件超声波探伤方法