What about the flange cap and the blind plate?
The flange cap is a kind of blind plateThe flange cap is the flange blind plate, but the blind plate is not only the flange cover form, but also has the welding blind plate, to clamp blind board and so onBlind is off line, but not necessarily, but may name in other places have changed, this is similar to the blocked pipeline, such as manhole cover, it is actually a flange cover, but it is not blocked pipeline. And our tea cup cover and so on. (of course. "Blind" words determine its role, "in" words determine its shape)
It seems a bit different. The flange cap is provided with flanges at one side, while the blind plate may have flanges on both sides.
No, the flange is used to connect, blind blocked pipes. Flange hole on the cover, not blind
