Blind raised face flanges are an essential part of many industrial pipe systems. They are incredibly useful for a variety of applications, from the creation of pressure vessels to the transfer of liquids and gasses. But what exactly are blind raised face flanges?

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Blind Raised Face Flanges can be used in a variety of different projects. ASME B16.5 Blind Flange are commonly used to create pressure vessels, or containers that hold pressurized substances such as oil, gas, and water. These BLRF Flanges make it easy to seal off pipe ends in these systems, preventing dangerous leaks or spills. They can also be used in the transfer of liquids or gasses through pipes by providing a secure connection between two sections of pipe.


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Types of blind raised face flanges (blrf)

There are two main types of Blind Raised Face Flanges - standard duty and heavy duty. Standard duty is the most common type and is made from forged steel or carbon steel material with low pressure ratings (up to 300 psi). Heavy duty blind raised face flanges have higher pressure ratings (up to 1,000 psi) and are made from stainless steel or alloy materials for increased durability and longevity. Socket Weld Raised Face Flanges, Orifice Flanges and many more grades are also available.

Blind Raised Face Flanges

Blind Raised Face Flanges

One major benefit of using Carbon Steel Blind Raised Face Flanges  is their versatility - they can be used in both high-pressure systems as well as low-pressure systems depending on which type anyone choose.These Duplex Steel Blind Raised Face Flanges provide an incredibly secure connection between two sections of pipe without sacrificing ease-of-assembly. This makes them ideal for projects where fast assembly times are essential but safety is still paramount. Different types of products are available,such as Stainless Steel 316H Round Bars,Tool Steel Round Bars, etc.

Raised Face Blind Flange provide an invaluable resource for many industrial applications that require strong connections between pipes while still providing a quick assembly time. Depending on the specific needs, anyone can choose either standard or heavy duty models to ensure maximum efficiency when creating the pressure vessel or transferring liquids/gases through pipes in the system. With their versatility and secure connections, these unique products provide numerous advantages over traditional piping solutions.

ASME B16.5 Blind Flange, ASME B16.5 Blind Flange Dimensions, Stainless Steel Blind Raised Face Flanges, Alloy Steel Blind Raised Face Flanges, Nickel Alloy BLRF Flanges, Carbon Steel Blind Raised Face Flanges, Duplex Steel Blind Raised Face Flange

What is a Blind Raised Face Flange?

A Blind Raised Face Flange is a type of flange that is used to seal off the ends of a piping system. It is also known as a Blind Flange or a Blind End.

How is a Blind Raised Face Flange used?

A Blind Raised Face Flange is used to seal the end of a piping system when the system needs to be temporarily or permanently closed off. It is also used as a connection point for future expansion of the piping system.

What are the advantages of using Blind Raised Face Flanges?

Blind Raised Face Flanges provide a leak-proof seal at the end of a piping system, which prevents fluid from escaping. They are also easy to install & remove, which makes maintenance & repair work easier. Finally, Blind Raised Face Flanges are available in a range of materials & sizes

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Blind Raised Face Flanges (BLRF Flange) Specification

Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Size : 1/2" (15 NB) to 48" (1200NB)

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

DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673

BS : BS4504 , BS4504, BS1560, BS10

Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

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Raised Faced Blind Flanges Materials and Grades

Stainless Steel Blind Flanges : ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L

Duplex & Super Duplex Steel Blind Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Carbon Steel Blind Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706

Low Temperature Carbon Steel Blind Flanges : ASTM A350, LF2, LF3

Alloy Steel Blind Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91

Copper Alloy Steel Blind Flanges : ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200

Nickel Alloy Blind Flanges : ASTM SB564, SB160, SB472, SB162 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)

ASME B16.5 BLRF Flange Price List

SR NO QTY Description PRICE (USD$) TOTAL
1 50 Flange 2" RF Blind CS A/SA105  $3.42  $171.00
2 20 Flange 2" 300 RF Blind CS A/SA105  $6.16  $123.20
3 20 Flange 3" 300 RF Blind CS A/SA105  $11.11  $222.20
4 100 Flange 4" 150 RF Blind CS A/SA105  $10.26  $1,026.00
5 40 Flange 4" 600 RF Blind CS A/SA105  $31.65  $1,266.00
6 50 Flange 6" 150 RF Blind CS A/SA105  $18.81  $940.50
7 60 Flange 6" 300 RF Blind CS A/SA105  $30.79  $1,847.40
8 36 Flange 8" 300 RF Blind CS A/SA105  $48.80  $1,756.80
9 240 Flange 16" 150 RF Blind CS A/SA105  $95.40  $22,896.00

Blind Flange Weight & Blind Flange Pressure Ratings

Blind Flange Weights by Pressure Class and Size
Pipe Size 150 # 300 # 600 # 900 # 1500 # 2500 #
WN SO BLD WN SO BLD WN SO BLD WN SO BLD WN SO BLD WN SO BLD
1/2" 2 1 1 2 1 1 2 2 2 SEE 1500 # WEIGHTS 5 4 4 7 7 7
3/4" 2 2 2 3 3 3 4 3 3 SEE 1500 # WEIGHTS 6 5 6 8 8 8
1" 3 2 2 4 3 3 4 4 4 SEE 1500 # WEIGHTS 9 8 8 12 11 11
1 1/2" 4 3 3 7 6 6 8 7 8 SEE 1500 # WEIGHTS 13 12 13 25 22 23
2" 6 5 5 9 7 8 12 9 10 SEE 1500 # WEIGHTS 25 25 25 42 37 39
2 1/2" 8 7 7 12 10 12 18 13 15 SEE 1500 # WEIGHTS 36 36 35 52 55 56
3" 10 8 9 15 13 16 23 16 20 31 26 29 48 48 48 94 83 86
4" 15 13 17 25 22 27 42 37 41 53 53 54 73 73 73 145 125 130
5" 19 15 20 32 28 35 68 63 68 86 83 87 130 130 140 245 210 225
6" 24 19 26 42 39 50 81 80 86 110 110 115 165 165 160 380 325 345
8" 39 30 45 67 58 81 120 115 140 175 170 200 275 260 300 580 485 530
10" 52 43 70 91 81 124 190 170 230 260 245 290 455 435 510 1075 930 1025
12" 80 64 110 140 115 185 225 200 295 325 325 415 690 580 690 1525 1100 1300
14" 110 90 140 180 165 250 280 230 355 400 400 520 940 NA 975 NA NA NA
16" 140 98 180 250 190 295 390 330 495 495 425 600 1250 NA 1300 NA NA NA
18" 150 130 220 320 250 395 475 400 630 680 600 850 1625 NA 1750 NA NA NA
20" 180 165 285 400 315 505 590 510 810 830 730 1075 2050 NA 2225 NA NA NA
22" 225 185 355 465 370 640 720 590 1000 NA NA NA NA NA NA NA NA NA
24" 260 220 430 580 475 790 830 730 1250 1500 1400 2025 3325 NA 3625 NA NA NA

Dimensional Tolerances of ASME B16.5 Blind Flanges

Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm
Inside Diameter
not applicable
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm
Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore
not applicable
Drilling
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness
≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0
Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm

ASME B16.5 BLRF Flange Price List

SR NO QTY Description PRICE (USD$) TOTAL
1 50 Flange 2" RF Blind CS A/SA105  $3.42  $171.00
2 20 Flange 2" 300 RF Blind CS A/SA105  $6.16  $123.20
3 20 Flange 3" 300 RF Blind CS A/SA105  $11.11  $222.20
4 100 Flange 4" 150 RF Blind CS A/SA105  $10.26  $1,026.00
5 40 Flange 4" 600 RF Blind CS A/SA105  $31.65  $1,266.00
6 50 Flange 6" 150 RF Blind CS A/SA105  $18.81  $940.50
7 60 Flange 6" 300 RF Blind CS A/SA105  $30.79  $1,847.40
8 36 Flange 8" 300 RF Blind CS A/SA105  $48.80  $1,756.80
9 240 Flange 16" 150 RF Blind CS A/SA105  $95.40  $22,896.00
Other Types of Blind Plate Flange (BLRF)
  • SS Blind Raised Face Flanges
  • Carbon Steel Industrial BLRF Flanges
  • Alloy Steel Raised Faced Blind Flanges
  • Titanium ANSI 16.47 Blind Flanges
  • ANSI B16.5 Inconel BLRF Flanges Stockholder

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