螺纹活接头 | Threaded Union

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螺纹四通 | Threaded Cross

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螺纹弯头 | Threaded Elbow

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承插焊活接头 | Socketweld Union

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承插焊四通 | Socketweld Cross

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承插焊三通 | Socketweld Tee

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承插焊弯头| Socketweld Elbow

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钢制三通 | Steel Tee

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