-
- GB 9123.2-1988 PN0.6MPa(6bar)平面钢制管法兰盖
- GB9123.2-1988
-
- GB 9123.19-1988 PN4.0MPa(40bar)凹凸面钢制管法兰盖
- GB9123.19-1988
-
- GB 9123.18-1988 PN2.5MPa(25bar)凹凸面钢制管法兰盖
- GB9123.18-1988
-
- GB 9123.17-1988 PN1.6MPa(16bar)凹凸面钢制管法兰盖
- GB9123.17-1988
-
- GB 9123.16-1988 PN25.0MPa(250bar)凸面钢制管法兰盖
- GB9123.16-1988
-
- GB 9123.14-1988 PN10.0MPa(100bar)凸面钢制管法兰盖
- GB9123.14-1988
-
- GB 9123.13-1988 PN5.0MPa(50bar)凸面钢制管法兰盖
- GB9123.13-1988
-
- GB 9120.6-1988 PN4.0MPa(40bar)榫槽面对焊环松套板式钢制管法兰
- GB9120.6-1988
-
- GB 9120.4-1988 PN4.0MPa(40bar)凹凸面对焊环松套板式钢制管法兰
- GB9120.4-1988
-
- GB 9119.7-1988 PN1.0MPa(10bar)凸面板式平焊钢制管法兰
- GB9119.7-1988
