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| 91. | Steel pipe blank fanges with male and female face for PN 1.6MPa (16 bar) |
| GB/T9123.17-1988PN1.6MPa(16bar)凹凸面钢制管法兰盖 |
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| 92. | Steel pipe blank flanges with ring-joint face for PN 5.0MPa (50 bar) |
| GB/T9123.32-1988PN5.0MPa(50bar)环连接面钢制管法兰盖 |
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| 93. | Steel pipe blank flanges with ring-joint face for PN 2.0MPa (20 bar) |
| GB/T9123.31-1988PN2.0MPa(20bar)环连接面钢制管法兰盖 |
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| 94. | Steel pipe blank flanges with tongue and groove face for PN 25.0MPa (250 bar) |
| GB/T9123.30-1988PN25.0MPa(250bar)榫槽面钢制管法兰盖 |
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| 95. | Steel pipe blank flanges with ring-joint face for PN 25.0MPa (250 bar) |
| GB/T9123.35-1988PN25.0MPa(250bar)环连接面钢制管法兰盖 |
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| 96. | Steel pipe blank flanges with ring-joint face for PN 42.0MPa (420 bar) |
| GB/T9123.36-1988PN42.0MPa(420bar)环连接面钢制管法兰盖 |
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| 97. | Steel pipe blank flanges with ring-joint face for PN 15.0MPa (150 bar) |
| GB/T9123.34-1988PN15.0MPa(150bar)环连接面钢制管法兰盖 |
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| 98. | Steel pipe blank flanges with male and female face for PN 5.0MPa (50 bar) |
| GB/T9123.20-1988PN5.0MPa(50bar)凹凸面钢制管法兰盖 |
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| 99. | Steel pipe blank flanges with ring-joint face for PN 10.0MPa (100 bar) |
| GB/T9123.33-1988PN10.0MPa(100bar)环连接面钢制管法兰盖 |
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| 100. | Steel pipe blank flanges with tongues and groove face for PN 2.5MPa (25 bar) |
| GB/T9123.25-1988PN2.5MPa(25bar)榫槽面钢制管法兰盖 |
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