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  • Trenchless directional drilling construction process-3

    Trenchless directional drilling construction process-3 Towing pipeline(1) After the welding of the crossing pipe section is completed, connect the drag head at the pipe end and separate each pipeline to avoid staggering.(2) Connection of pipeline and drilling tool: drill pipe + φ500 reamer + 50t rot

    2020-10-30
  • Trenchless directional drilling construction process-2

    Trenchless directional drilling construction process-2 Pre-enlargingAfter completing the pilot hole work, start the pre-expansion. According to the actual situation of the project and the technical requirements of the horizontal directional drilling crossing construction, the pipeline expansion is c

    2020-10-27
  • Trenchless directional drilling construction process-3

    Trenchless directional drilling construction process-3 Towing pipeline(1) After the welding of the crossing pipe section is completed, connect the drag head at the pipe end and separate each pipeline to avoid staggering.(2) Connection of pipeline and drilling tool: drill pipe + φ500 reamer + 50t rot

    2020-10-16
  • Trenchless directional drilling construction process-2

    Trenchless directional drilling construction process-2 Pre-enlargingAfter completing the pilot hole work, start the pre-expansion. According to the actual situation of the project and the technical requirements of the horizontal directional drilling crossing construction, the pipeline expansion is c

    2020-10-13

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