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          金屬軟管_金屬波紋管_插板閥_通風蝶閥_非金屬膨脹節/補償器_泊頭太航管道配件制造有限公司

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          外壓式補償器
          外壓式補償器

          外壓式補償器采用矩形截面,圓角波形,管道中單個膨脹節承受...

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          直埋補償器主要用于直埋管線的軸向補償,具有抗彎能力,可以...

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          女人光屁股(无遮挡)

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