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One-piece Upsetted Horizontal Directional HDD Drill Rod


Structural Drawing of One Piece Upsetted HDD Drill Rod




Manufacturing Flow of One-piece Upsetted Trenchless HDD Drill Rod




Friction Welding Horizontal Directional HDD Drill Rod


Structural Drawing of Friction Welded Horizontal Directional HDD Drill Rod


Manufacturing Flow of Friction Welding Trenchless HDD Drill Rod

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