1. Stainless steel pipes should not have strip or spiral concave groove marks. The installation of shoddy stainless steel bright tube will endanger the sealing characteristics;
2. The stainless steel pipe should not be dragged out of the pipe rack or the rough surface layer, so as to prevent the impression of the concave groove;
3. Align the two ends of the stainless steel pipe and the socket of the double ferrule joint. If it is skewed, the installation will be laborious and the energy will be uneven, leading to more serious risks;
4. The pipe cutter should be kept sharp, and the pipe cutter should not cut too deep every time it rotates. And to ensure that the end of the tube after laser cutting has no burrs and no elliptical deformation. This is conducive to the smooth basis of the sealing gasket during the whole installation process, and it is not easy to destroy the sealing part of the sealing gasket.