1, Pipe tube: The use of hoisting belt to avoid injury and body concrete. Before hoisting belt hoisting should find out tube body weight heart, make mark to meet the lifting requirement of tube body. The lower tube should make the pipe section to meet the flow direction. The bottom tube and the safety pipe shall not disturb the piping foundation. 2, Stable tube: After the pipeline in place, in order to prevent the rolling pipe, should be properly added to the sides of the tube two groups of four wedge-shaped concrete cushion block. Piping should be installed in the center of the pipeline, the elevation of the section adjustment to ensure that the pipeline profile elevation and plane position is accurate. After each section tube is seated, it should be fixed to prevent the pipe from being displaced. With the hoisting belt to stabilize the tube, the advanced person inside the tube examines counterpart, reduces the wrong mouth phenomenon. The deviation of the bottom elevation in the tube is within ± Lomm, the center deviation is not more than Lomm, and the wrong mouth of the adjacent tube is less than 3mm.
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