73mm / 89mm Forged One-Piece Cold-Drawn HDD Drill Pipe for Trenchless Drilling Designed for the rigors of modern trenchless technology, our 73mm/89mm Forged One-Piece Cold-Drawn HDD Drill Pipes ...Xem thêm
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73mm / 89mm Forged One Piece Cold Drawn 4140 HDD Drill Pipe For Trechless Drilling