Intro: 

Blind Flanges:
The blind flange is a flange without a bore. It is used to close off the ends of a piping system and/or a pressure vessel opening. It also permits easy access to the interior of a line or vessel once it has been sealed and must be reopened. Features Specifications: blind flange

We can also make nonstandard flanges, and the dimentions in accordance with your specifications and drawings.
This flange can be applied to petro-chemical project, pipe engineering, public applicances, etc.