document.writeln('

                                    

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 螺纹直通 BPC 14-04

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 螺纹直通 BPC 14-02 

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   T型变径 BPEG 12-10

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直通变径 BPG 10-12

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      直通 BPU Φ10

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             直通变径 BPG 10-8

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');