Blind Flange

Product Details:
Usage/Application Oil Industry
Material Carbon Steel, Stainless Steel, Mild Steel, Alloy Steel
Material Standard ASTM A351, ASTM A182
Size 0-1 inch, 1-5 inch, 20-30 inch, 10-20 inch, 5-10 inch
Type Blind Flange
Color Silver, Grey, Black, Metallic Grey
We work to please our valuable customers with our excellent quality product range. Our Stainless Steel Blind Flanges is perfect in dimension and flawlessly finished. Our offered range of products including Stainless Steel Blind Flanges is obtained after the use of superior quality raw material processed in high advanced machinery and equipments. We have given extra fine finishing to our final product range to attain maximum satisfaction of our clients.

Description:- Blind Flanges
Range: - 15 NB TO 1500NB (1/2 to 60")
ANSI B 16.5 (150#, 300#, 400#, 600#, 900#, 1500# & 2500#)
Material: Stainless Steel - ASTM A-182 (304, 304L, 316, 316L)
Carbon Steel - ASTM A-105, A-350 LF2, IS 2062, AS 516 Gr. 70, C45
Alloy Steel - ASTM A-182 F5, F9, F11, F12, F21, F22.

This is a Flange without a bore and is used to shut off a piping system or vessel opening. It also permits easy access to vessels or piping systems for inspection purposes.

DIMENSION SPECIFICATIONS AS PER THE INTERNATIONAL STANDARD ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP, NACE

SIZE : ½" to 60" (As Per Customer Requirement)

CLASS : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN Standard ND-6,10, 16, 25, 40 Etc.

MATERIAL GRADE :
Carbon Steel Blind Flange : ASTM A105, ASTM A 694 F42

Low Temperature Carbon Steel Blind Flange : A350 LF2/A350 LF3

Copper Alloys Blind Flange : ASTM / ASME SB 61 / 62 / 151 / 152
C 70600 (CU -NI- 90/10)
C 71500 (CU -NI- 70/30)
UNS NO. C 92200, UNS NO. C 83600,UNS NO C 10100
C 10200, C 10300, C 10800, C 12000, C 12200

Nickel Alloys Blind Flange : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22, C276

Duplex Blind Flange : ASTM A 182 UNS F 44, F 45, F51, F 53, F 55, F 60,F 61

Stainless Steel Blind Flange : ASTM 182 F 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L

Alloy Steel Blind Flange : ASTM SA 182 F1/F5/F9/F11/F22/F91

A Blind Flange is a solid disk used to block off a pipeline or to create a stop. Like a regular flange, it also has mounting holes around the perimeter and the gasket sealing rings machined into the mating surface. The difference is that a blind flange has no opening to allow fluid to pass through.

Code No. JSI -69

What is a blind flange
A blind flange is a solid disc that is used to block a pipe or form a stop. Similar to a regular flange, a blind flange has mounting holes at the perimeter and gasket sealing rings machined into the mating surface. the blind flange has the face thickness of a flange, matching face type and a similar bolting pattern.

Blind flanges are typically used to enclose the end of a pipe. They are also used for similar valve and pressure vessel openings. Because they are usually located at the end of a system, these flanges are usually among the highest stress flange types. tapped blind flange is only suitable for low-pressure systems where there is no thermal cycling that could cause thread loosening. Threaded pipe flanges are equipped with a tapered female thread into which the pipe can be screwed. tapped blind flange can be used in areas where thermal processing (welding, burning and grinding) is not desired.



Flange Materials.
Carbon Steel - ASTM/ASME SA-105, A-350 LF-2, LF-3, A694, SA-516-70

Stainless Steel - A-182 - F-304, 304L, 316, 316L, 309, 310, 317L, 321, 347, Alloy 20

In specifications of past decades, including B16.1 and other industry standard cast steel requirements, blind flanges typically contain a slight groove in the center portion of the convex face. This recess allows the pipe end to fit into the connection flange and allows a seal to be formed between this connection flange and the blind. Larger OD blind flanges have opted for a concave recess through the body of the shutter to create a disc-shaped head structure at the top of the flange. Because older cast iron specifications are relatively obsolete, these styles are not used to make most blind flanges. Instead, choose a modern blind flange with or without a hub.

Fusion Fittings offers threaded pipe flanges in A105N, A105, SS316, SS304, and A20, high-yield nickel alloys

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A blind flange is a round plate which has all the corresponding bolt holes but no center hole, and because of this characteristic, this flange is used to close the ends of the piping systems and the openings of the pressure vessels. It also allows easy access to the interior of a line or vessel once it has been sealed and must be reopened. Blind Flanges are commonly used in petrochemicals, pipe engineering, utilities and water works.

For best fitting of blind flanges we check for following :

Outer Diameter of body
Outer Diameter of body
Straightness and alignment of the bolt hole
Thickness of the Blind
A Blind Flange has no bore, and is used to close ends of piping systems. A blind flange also permits easy access to a line ones it has been sealed.

Spectacle Blind Flange