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What is a Flange?

Blind Flanges, BL Flange, BLRF

A Blind flange is round plate which has all of the relevant boltholes but no center hole, and because of this feature this flange is used to close off the ends of a piping systems and pressure vessel openings. It also permits easy access to the interior of a line or vessel once it has been sealed and must be reopened.

The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles. This flange helps in easy access to a line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made.

We are manufacturer of Blind Flanges and supply high quality Blind Flanges in both large and small quantities worldwide and offer you the best prices in the market.

Blind Flanges are commonly used in petrochemical, pipe engineering, public services & water works.

Blind pipe flanges are often used for high pressure applications.
Stainless Steel Raised Face Blind Flanges 90 Degree 1.5D Elbow
Stainless Raised Face Blind Flange Stainless Blind Plate Flange

This reduction can be a threaded reduction or welded reduction.

Details of Blind flange
Details of Blind flange
1. Blind flange 2. Stud Bolt 3. Gasket 4. Other flange

Size: 1/2” to 60”, DN 12mm to DN 1500mm
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
Facing: RF / RTJ

Material:
  • Cabon steel: A105, A350 LF2
  • Stainless steel: A182 F304/F304L/F316/F316L/F321
  • Alloy steel: F11, F12
Specifications:
Blind flange is put at the end of pipe or at the junction that would possibly be a future expansion into that direction.
What is the use of a blind flange?

Piping is easier to drill or weld at the construction stage. Once it was in use, drilling or welding will need prolong cleaning especially when the fluid transferred is combustible. For the mean of future extension, either the blind or valve would be used to seal the end.

 

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