1. Factors affecting the installation quality of Norma stainless steel throat hoop
(1) Norma stainless steel throat hoop shall be free of defects such as air hole, sand hole, shrinkage crack, etc.
(2) The material and performance of the sealing ring shall meet the requirements. The sealing surface shall be free of bubbles, impurities, cracks, uneven concave convex defects, and aging rubber ring shall not be used.
(3) Theoretically, the moving distance of the clasp in the throat hoop is half of the expansion of the joint, and the actual measurement should be carried out. If not, it can not meet the expansion requirements of the pipeline. In order to improve the sealing effect, the left and right end pipes are matched with the throat hoop before leaving the factory. In practical engineering, it is not suitable to use ordinary pipe to directly replace the end pipe. Moreover, the perpendicularity of the end pipe end face and the axis and the flatness of the end face itself have certain requirements. If the size is not standard, the expansion of the joint will be greatly reduced, which can not meet the use requirements.

(4) The size of the end pipe diameter should be selected with positive deviation, otherwise the compression force of Norma throat hoop on the sealing ring is not enough, which will affect the sealing effect of the joint.

2. Precautions for installation of Norma stainless steel hose hoop
(1) The distance L between the snap ring and the end tube should be controlled. The control of l should be combined with the instruction manual. When the gap between the two pipe ends is smaller, make sure that the snap ring is just close to the inclined plane.
(2) When the snap ring position is determined, the gap between the two pipe ends should be determined by calculation according to the elongation of the pipe and the ambient temperature during construction. The deviation of dimension should be ensured during construction.
(3) Under the premise of a certain moving distance, the larger the weld height and width of the clasp and the end pipe, and the Perpendicularity Error of the clasp plane and the end pipe axis, the smaller the expansion of the joint, and the worse the use effect.
(4) The spatter impurities during the welding of end pipe and snap ring affect the sealing of end pipe. The welding slag on the sealing surface shall be removed before installation to ensure the sealing effect.

The above is a brief introduction of the precautions for the installation of Norma stainless steel hose hoop. In addition, Sunrider also acts as an agent for oeticker, nord-lock, Schnorr, Wurth and other brand products. Customers with needs can call for advice at any time.

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