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阀座密封面 |
PTFE、碳素纤维+PTFE、对位聚苯 | |||
螺柱 螺母 |
35 35CrMoA(B7) 45(2H) |
2Cr13(420) 1Cr18Ni9 1Cr17Ni2(431) | ||
填料 |
V型PTFE、柔性石墨 |