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
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.
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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)
Get QuoteRaised 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)
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