Pipe plugs and plastic seals should be removed prior to installation. If it is lifted, the angle should be kept inclined at 45°, and the steel pipe should be tapped by hand to further remove the debris in the pipe. After cleaning, it needs to be reconfirmed by the relevant quality personnel. At the same time, it is forbidden to place any items in the test tube during installation. Regarding the safe transportation of the pipeline to the construction site, the unloading and specific placement should be carried out according to the specific direction of the icon. The setup of the pipe is the key to ensuring the quality of the weld and good formation of the back of the pipe. If the gap and blunt edge of the groove are not suitable, it is easy to cause defects such as undercuts, weld flashes and incomplete penetration. It should be ensured that the gap is uniform and the inner wall is kept flush. If the wall thickness is inconsistent, it should be repaired according to specific regulations.
