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circle seal截止阀,452B-2PPP,黄铜,Buna N
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circle seal截止阀,9532T-2PP,303不锈钢,Female NPT
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circle seal截止阀,9532B-2MM,黄铜,Male NPT
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circle seal截止阀,9532B-2PP,黄铜,Female NPT
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