Trenchless directional drilling construction process-4 Equipment dismantled, landform restoration(1) After completing the crossing, clean and adjust the equipment, and evacuate the construction site.(2) Treatment of backflow mud: The mud in the mud pool on the side of the earth and the excavation sh

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

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

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As we all know, Sany, China United, XCMG and Liugong are also known as China's four major construction machinery giants. From the annual performance data of the first half of 2019, Sany Heavy Industry ranks among the construction machinery in terms of revenue or net profit. First in the industry, it

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

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