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- GB 9123.22-1988 PN15.0MPa(150bar)凹凸面钢制管法兰盖
- GB 9123.22-1988
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- GB 9123.2-1988 PN0.6MPa(6bar)平面钢制管法兰盖
- GB 9123.2-1988
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- GB 9123.20-1988 PN5.0MPa(50bar)凹凸面钢制管法兰盖
- GB 9123.20-1988
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- GB 9123.19-1988 PN4.0MPa(40bar)凹凸面钢制管法兰盖
- GB 9123.19-1988
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- GB 9123.18-1988 PN2.5MPa(25bar)凹凸面钢制管法兰盖
- GB 9123.18-1988
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- GB 9123.17-1988 PN1.6MPa(16bar)凹凸面钢制管法兰盖
- GB 9123.17-1988
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- GB 9123.16-1988 PN25.0MPa(250bar)凸面钢制管法兰盖
- GB 9123.16-1988
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- GB 9123.15-1988 PN15.0MPa(150bar)凸面钢制管法兰盖
- GB 9123.15-1988
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- GB 9123.14-1988 PN10.0MPa(100bar)凸面钢制管法兰盖
- GB 9123.14-1988
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- GB 9123.13-1988 PN5.0MPa(50bar)凸面钢制管法兰盖
- GB 9123.13-1988