板块导航

〖管道材料和管道机械〗

9.64 MB (01-13) GBT 12221-2025 .pdf (5)
1.38 MB (11-29) GBT 12459-2025 (3)
562.24 KB (11-29) GBT 12246-2025 .pdf (2)
602.54 KB (11-29) GBT 12245-2025 鷽.pdf (2)
549.87 KB (11-29) GBT 12233-2025 ÷ .pdf (2)
560.01 KB (11-29) GBT 12232-2025 ÷ .pdf (2)
370.88 KB (11-29) GBT 12227-2025 ÷ ī淶.pdf (2)
335.37 KB (11-29) GBT 12226-2025 ÷ 淶.pdf (2)
1.04 MB (11-29) GBT 13401-2025 淶.pdf (3)
442.38 KB (11-29) GBT 8174-2025 豸Ч.pdf (3)
392.59 KB (11-29) GBT 11251-2025 弰.pdf (2)
370.2 KB (11-29) GBT 12228-2025 ÷ 淶.pdf (2)
418.71 KB (11-29) GBT 12229-2025 ÷ 淶.pdf (2)
954.34 KB (11-29) GBT 12236-2025 .pdf (2)
36.99 MB (11-29) TSG 31-2025《工业管道安全技术规程》一清水印版.pdf (46)
1.67 MB (11-29) GBT 20801.5-2025压力管道规范第5部分：氢用管道正式版）.pdf (59)
13.95 MB (11-29) GBT 20801.1-2025压力管道规范第1部分：工业管道正式版）.pdf (32)
466.46 KB (11-23) ISO 12944-1-2017.pdf (3)
438.94 KB (11-23) ISO 12944-2-2017.PDF (6)
537.79 KB (11-23) ISO 12944-3-2017.pdf (3)
630.81 KB (11-23) ISO 12944-4-2017.pdf (3)
669.38 KB (11-23) ISO 12944-5-2018.pdf (3)
1.49 MB (11-23) ISO 12944-5-2019.pdf (4)
454.87 KB (11-23) ISO 12944-6-2018.pdf (3)
1.93 MB (11-23) ISO 12944-8-2017.pdf (3)
426.95 KB (11-23) ISO 12944-7-2017.pdf (3)
968 KB (11-23) ISO 12944-9-2018.pdf (5)