(1) The distance L between the snap ring and the end pipe should be well controlled. The control of L should be combined with the instruction manual. When the gap between the two pipe ends is the smallest, it is necessary to ensure that the snap ring just sticks to the inclined surface.

(2) In the case of determining the position of the snap ring, the size of the gap between the two pipe ends should be determined through calculation according to the elongation of the pipe and the ambient temperature during construction. The size deviation should be guaranteed during construction.

(3) Under the premise of a certain moving distance, the greater the error in the height and width of the weld seam welded by the snap ring and the end pipe, and the perpendicularity between the plane of the snap ring and the axis of the end pipe, the smaller the expansion and contraction of the joint, and the worse the use effect.

(4) Splash impurities during the welding of the end pipe and snap ring affect the seal of the end pipe. Before installation, the welding slag on the sealing surface should be removed to ensure the sealing effect.