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厚壁螺旋焊管常用术语

CHANPINLIEBIAO

LIANXIWOMEN

HEBEICANGZHOUTIANXIANGCHENGLUOXUANGANGGUANCHANGJIA

WANGLUOQIPAIYOUXI

HOUBILUOXUANHANGUANCHANGYONGSHUYU

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QUFUDIAN

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XIANGGUANXINXI

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