Specifications
ASTM A182 F53 UNS 32750 GR2507 Blind Flange RF
1. Material: 2507 (F53)
2. Size: 4″ (DN100)
3. Standard: ANSI, etc
4. Pressure: 150#
A blind flange is a solid disk used to block off a pipeline or to create a stop. It is machined in the same manner as a regular flange with the 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. The blind flange can be inserted between two open flanges and used to block off the flow of liquid through a pipeline.
Without the blind flange it would be difficult to perform maintenance or repairs on a pipeline. The flow would need to be shut off at the nearest valve, which could be miles away from the repair area. Valves are also very expensive and are prone to sticking. The blind flange is a much more cost efficient way of sealing a pipe.
China Blind Flange Manufacturer ASTM A182 F53 UNS 32750 GR2507 Blind Flange, RF, 100NB, CL150.
Composition ranges for 2507 (F53)
|
GRADE
|
C≤
|
Mn≤
|
Si≤
|
S≤
|
P≤
|
Cr≤
|
Ni
|
Mo
|
Cu≤
|
N
|
|
S32750
（2507）
00Cr25Ni7Mo4N
|
0.03
|
1.20
|
0.8
|
0.020
|
0.035
|
24.0/26.0
|
6.0/8.0
|
3.0/5.0
|
0.50
|
0.24/0.32
|
| Type | ASTM A182 F53 UNS 32750 GR2507 Blind Flange RF |
| Size | 4″ (DN100) |
| Standards | SO, WN, SW, TH, LJ, BL, PL, etc |
| Material |
Carbon Steel Plate Flanges: ASTM A105/A105N, etc Stainless Steel Plate Flanges: ASTM A182 F304/304L/304H, F316/316L, F310, F321, F904L, etc Alloy Steel Plate Flanges: ASTM A182 F1, F5, F9, F11, F22, F91, etc Nickel Alloys Plate Flanges: Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II). Duplex, Super Duplex Plate Flanges: ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61, 2205 (UNS No. S31803), 2507 (UNS No.S32750), etc Copper Alloy Plate Flanges: UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C71500 (Cu -Ni- 70/30), etc |
| Surface treatment | Chamfering |
| Applications | Petroleum,chemical,power,gas,metallurgy, shipbuilding, construction, etc |
Dimensions Of 150# Blind Flanges
| Nominal Pipe Size |
“A” (O.D.) |
“B” (Thk.) |
“C” (RF Dia.) |
“D” (B.C.D.) |
# Bolt Holes |
Dia. of Bolt Holes |
Approx. Weight |
| 1/2″ | 3-1/2 | 7/16 | 1-3/8 | 2-3/8 | 4 | 5/8 | 2 |
| 3/4″ | 3-7/8 | 1/2 | 1-11/16 | 2-3/4 | 4 | 5/8 | 2 |
| 1″ | 4-1/4 | 9/16 | 2 | 3-1/8 | 4 | 5/8 | 2 |
| 1-1/4″ | 4-5/8 | 5/8 | 2-1/2 | 3-1/2 | 4 | 5/8 | 3 |
| 1-1/2″ | 5 | 11/16 | 2-7/8 | 3-7/8 | 4 | 5/8 | 3 |
| 2″ | 6 | 3/4 | 3-5/8 | 4-3/4 | 4 | 3/4 | 4 |
| 2-1/2″ | 7 | 7/8 | 4-1/8 | 5-1/2 | 4 | 3/4 | 7 |
| 3″ | 7-1/2 | 15/16 | 5 | 6 | 4 | 3/4 | 9 |
| 3-1/2″ | 8-1/2 | 15/16 | 5-1/2 | 7 | 8 | 3/4 | 13 |
| 4″ | 9 | 15/16 | 6-3/16 | 7-1/2 | 8 | 3/4 | 17 |
| 5″ | 10 | 15/16 | 7-5/16 | 8-1/2 | 8 | 7/8 | 20 |
| 6″ | 11 | 1 | 8-1/2 | 9-1/2 | 8 | 7/8 | 27 |
| 8″ | 13-1/2 | 1-1/8 | 10-5/8 | 11-3/4 | 8 | 7/8 | 47 |
| 10″ | 16 | 1-3/16 | 12-3/4 | 14-1/4 | 12 | 1 | 67 |
| 12″ | 19 | 1-1/4 | 15 | 17 | 12 | 1 | 123 |
| 14″ | 21 | 1-3/8 | 16-1/4 | 18-3/4 | 12 | 1-1/8 | 139 |
| 16″ | 23-1/2 | 1-7/16 | 18-1/2 | 21-1/4 | 16 | 1-1/8 | 187 |
| 18″ | 25 | 1-9/16 | 21 | 22-3/4 | 16 | 1-1/4 | 217 |
| 20″ | 27-1/2 | 1-11/16 | 23 | 25 | 20 | 1-1/4 | 283 |
| 24″ | 32 | 1-7/8 | 27-1/4 | 29-1/2 | 20 | 1-3/8 | 415 |
| 1/16″ raised face included in flange thickness. | |||||||
APPLICATIONS:
1. Petrochemical industry
2. Pharmaceutical industry
3. Food industry
4. Aviation and aerospace industry
5. Architectural decoration industry
6. Oil and gas industry
Other Features:
1) Chemical and Physical characteristic: durable, corrosion resistant and high-temperature resistant
2) We also produce flange with special specifications according to customers’ requirements;
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.
Blind Flange is commonly used in petrochemical, pipe engineering, public services & water works.
1) Packing Method:
Normal packing: plastic film or bubble paper wrapped on product’s surface ,protect ends with caps , pack with wooden case or load on fumifation plywood pallet .
Custom made as customers request.
2) Shipping Way:
Usually by Sea, By Air, By Train or River-and-Sea Coordinated Transport.
As per customer’s request.
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