Sleeve flanges are flanges that are loosely attached to the flange of a container or pipe. Loose flange. The flange can be made by means of flanging, direct turning or other welding rings.
Advantage is when the container or pipe flange deformation does not produce, the additional moment Fen convenient, can be used with the container or pipe of different materials, easy to save precious metals.
The disadvantage is that the flange thickness is large. Suitable for containers or pipes lined with brittle materials with low pressure.