The blind flange  have a circular and plate shape,so many flange factories cut the steel plates to produce the blind flanges,it could reduce the cost and process in the flange production.

Large size forged blind flanges under production

But the steel plate does not have a same quality with the steel forgings.After the steel is forged,the material will have a desired geometry and specific properties.These steel forgings mechanical properties are often greatly improved than steel plates.

Plasma cutting machine for plate cut flanges

In low pressure situation,the difference between flanges made from plated and forged steel flanges are not much.In high pressure and shaking situation,it will have a big difference.So when the flanges purchaser choose a blind flange,it is very important to make a suitable decision according to the pipeline design.

Blind flange is used for block the end of piping systems