StainlessSteelBlindFlangeSupplierAndStockistInChina

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Stainless Steel Blind Flange

Production ability: Name: Blind flange

Sizes: 1/2" (15 NB) to 48" (1200NB) DN10~DN5000

Material Types: Senrusta ŝtalo, Alloy Steel, Carbon Steel and etc.

Class150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

Flange face type: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove

Equipment:Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc

Application:Bitumen upgraders.Heavy oil refineries.Nuclear power (mostly seamless).Petrochemicals and acids.

Model number:

Orignal: Wenzhou,Zhejiang

Standrad:ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DE, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092

Brand: KXBL

Technics: Forged, Heat treated and machined

Package: Standard export package

Price: 15usd/kg

Delivery: Accord Quantity

  • Product Detail

Whtat is Stainless Steel Blind Flange?

A Stainless Steel Blind Flange is a type of pipe flange that is used to shut off or block the end of a pipe or vessel. It is a solid disk or plate with a bolt hole in the center and a raised face on one side. The raised face creates a tight seal when the flange is attached to the end of a pipe or vessel using bolts. Blind flanges are typically used in piping systems where the end of a pipe needs to be blocked off for maintenance or safety purposes. They are popular in industries such as oil and gas, chemical, and pharmaceuticals because they offer a tight and secure seal that is resistant to corrosion and high temperatures. Stainless steel is a popular material choice for blind flanges because of its durability, resistance to corrosion, and ability to withstand high pressure and temperature environments.

Table of Content

  1. Blind Flange Specifications
  2. Applicationsof Blind Flange
  3. Material & Grades of Blind Flanges (BLRF)
  4. Dimensions of Blind Flange
  5. Blind Flange Weight Chart
  6. Blind Flange Pressure Ratings
  7. ASME B16.5 Blind Flange Available Types
  8. Blind Flange Price List

Blind Flange Specifications

Blind Flange Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DE, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
ASME B16.5 Blind Flange Size Chart 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Blind Flange Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Blind Flange
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Blind Flange
Most common types of Blind Flange Forged / Threaded / Screwed / Plate
Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Production technique · Forged, Heat treated and machined
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Blind Flange Uses & application · Bitumen upgraders.

· Heavy oil refineries.

· Nuclear power (mostly seamless).

· Petrochemicals and acids.

Application of Blind Flange

  • ANSI B16.5 Class 150 Blind Flange uses in Industrial Boilers Industry
  • ASTM A182 Stainless Steel Blind Flange uses in Power Plants Industry
  • ASME B16.47 Series A and B Blind Flange uses in Nuclear Plants Industry
  • Stainless Steel Blind Flange uses in Oil & Gas Industry
  • Super Duplex Steel Blind Flange uses in Refineries Industry
  • Industrial Blind Flange uses in Ship Building Industry
  • Super Duplex Steel Blind Flangea Forged Flange uses in Heat Exchanger Industry
  • Carbon Steel Industrial Blind Flange uses in Condensers Industry
  • Alloy Steel Industrial Blind Flange uses in Paper & Pulp Industry
  • Duplex Steel Industrial Blind Flange uses in Marine Applications
  • Stainless Steel Industrial Blind Flange uses in Nuclear Power Industry
  • Industrial Blind Flangea / Fittings System uses in Fossil Fuel Power Plants Industry

Material & Grades of Blind Flanges (BLRF)

Carbon Steel Blind Flange ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DE 1.0402, DE 1.0460, DE 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Stainless Steel Blind Flange ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DE 1.4301, DE 1.4306, DE 1.4401, DE 1.4404, DE 1.4308, DE 1.4408, DE 1.4306, DE 1.4409
Alloy Steel Blind Flange ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Titanium Blind Flange ASTM B381 / ASME SB381, Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7

ASTM R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 |R56400/GR.5

Copper Blind Flange T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, ktp
Copper Nickel Blind Flange ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Brass Blind Flange 3602 / 2604 / h39 / H62 / ktp.
Inconel Blind Flange ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 Flanges
Hastelloy Blind Flange ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flanges
Monel Blind Flange ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Alloy 20 Blind Flange ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Aluminium Blind Flange 5052 /6061/ 6063 / 2017 / 7075 / ktp.
Nickel Blind Flange ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Duplex Blind Flange S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex Blind Flange S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Incoloy Blind Flange ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flanges
254 Smo Blind Flange ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DE 1.4547
Nimonic Blind Flange Nimonic 75, Nimonic 80A, Nimonic 90
Other Blind Flange material Tin bronze, Alumunum bronze, Lead bronze

Dimensions of Blind Flange

Stainless steel Blind Flange Dimension drawing

Stainless steel Blind Flange Dimension drawing

ANSI/ASME/ASA B16.5 150lb/sq.in. Flange BLIND-RF
ø D b g k Holes l Kg.
1/2″ 88,9 11,1 34,9 60,3 4 15,9 0,400
3/4″ 98,4 12,7 42,9 69,8 4 15,9 0,700
1″ 107,9 14,3 50,8 79,4 4 15,9 0,900
1 1/4″ 117,5 15,9 63,5 88,9 4 15,9 1,300
1 1/2″ 127,0 17,5 73,0 98,4 4 15,9 1,600
2″ 152,4 19,0 92,1 120,6 4 19,0 2,600
2 1/2″ 177,8 22,2 104,8 139,4 4 19,0 4,100
3″ 190,5 23,8 127,0 152,4 4 19,0 5,000
3 1/2″ 215,9 23,8 139,7 177,8 8 19,0 6,400
4″ 228,6 23,8 157,2 190,5 8 19,0 7,100
5″ 254,0 23,8 185,7 215,9 8 22,2 9,000
6″ 279,4 25,4 215,9 241,3 8 22,2 11,800
8″ 342,9 28,6 269,9 298,4 8 22,2 21,000
10″ 406,4 30,2 323,4 361,9 12 25,4 30,000
12″ 482,6 31,7 381,0 431,8 12 25,4 45,000
14″ 533,4 34,9 412,7 476,2 12 28,6 59,000
16″ 596,9 36,5 469,9 539,9 16 28,6 79,000
18″ 635,0 39,7 533,4 577,8 16 31,7 97,000
20″ 698,5 42,9 584,2 635,0 20 31,7 124,000
22″ 749,3 46,0 641,2 692,1 20 34,9 151,000
24″ 812,8 47,6 692,1 749,3 20 34,9 188,000

 

ANSI/ASME/ASA B16.5 300lb/sq.in. Flange BLIND-RF
ø D b g k Holes l Kg.
1/2″ 95,2 14,3 34,9 66,7 4 15,9 0,700
3/4″ 117,5 15,9 42,9 82,5 4 19,0 1,200
1″ 123,8 17,5 50,8 88,9 4 19,0 1,500
1 1/4″ 133,3 19,0 63,5 98,4 4 19,0 2,000
1 1/2″ 155,6 20,6 73,0 114,3 4 22,2 2,900
2″ 165,1 22,2 92,1 127,0 8 19,0 3,400
2 1/2″ 190,5 25,4 104,8 149,2 8 22,2 5,100
3″ 209,5 28,6 127,0 168,3 8 22,2 7,000
3 1/2″ 228,6 30,2 139,7 184,1 8 22,2 8,900
4″ 254,0 31,7 157,2 200,0 8 22,2 11,800
5″ 279,4 34,9 185,7 234,9 8 22,2 15,500
6″ 317,5 36,5 215,9 269,9 12 22,2 21,300
8″ 381,0 41,3 269,9 330,2 12 25,4 35,200
10″ 444,5 47,6 323,8 387,3 16 28,6 57,000
12″ 520,7 50,8 381,0 450,8 16 31,7 82,000
14″ 584,2 54,0 412,7 514,3 20 31,7 106,000
16″ 647,7 57,1 469,9 571,5 20 34,9 140,000
18″ 711,2 60,3 533,4 628,6 24 34,9 178,000
20″ 774,7 63,5 584,2 685,8 24 34,9 223,000
22″ 838,2 66,7 641,2 742,9 24 41,3 270,000
24″ 914,4 69,8 692,1 812,8 24 41,3 345,000

 

ANSI/ASME/ASA B16.5 600lb/sq.in. Flange BLIND-RF
ø D b g k Holes l Kg.
1/2″ 95,2 14,3 34,9 66,7 4 15,9 0,700
3/4″ 117,5 15,9 42,9 82,5 4 19,0 1,200
1″ 123,8 17,5 50,8 88,9 4 19,0 1,500
1 1/4″ 133,3 20,6 63,5 98,4 4 19,0 2,000
1 1/2″ 155,6 22,2 73,0 114,3 4 22,2 3,200
2″ 165,1 25,4 92,1 127,0 8 19,0 4,300
2 1/2″ 190,5 28,6 104,8 149,2 8 22,2 6,000
3″ 209,5 31,7 127,0 168,3 8 22,2 8,000
3 1/2″ 228,6 34,9 139,7 184,1 8 25,4 10,500
4″ 273,0 38,1 157,2 215,9 8 25,4 18,000
5″ 330,2 44,4 185,7 266,7 8 28,6 28,500
6″ 355,6 47,6 215,9 292,1 12 28,6 35,500
8″ 419,1 55,6 269,9 349,2 12 31,7 58,000
10″ 508,0 63,5 323,8 431,8 16 34,9 98,000
12″ 558,8 66,7 381,0 488,9 20 34,9 125,000
14″ 603,2 69,8 412,7 527,0 20 38,1 151,000
16″ 685,8 76,2 469,9 603,2 20 41,3 215,000
18″ 742,9 82,5 533,4 654,0 20 44,4 287,000
20″ 812,8 88,9 584,2 723,9 24 44,4 366,000
22″ 869,9 95,2 641,2 777,9 24 47,6 437,000
24″ 939,8 101,6 692,1 838,2 24 50,8 532,000

Dimensional Tolerances of Blind Flange ASME B16.5

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

Notes

  1. Dimensions are in millimeters unless otherwise indicated.
  2. The length of the stud bolt does not include the height of the chamfers (points).

Blind Flange Weight Chart

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

 

Conversion Data          
1 inch = 25.44 mm 1 mm = 0.03937 inches 1 lb/ft^2 = 47.88 Pa 1 psi = 6.8948 Pa   • x°F = (5/9)(x-32)°C
1 pound = 0.45359 Kg 1 Kg = 2.20462 pounds 1 Pa = 0.020885 lb/ft^2 1 Pa = 0.00014504 psi   • x°C = (9/5)x + 32°F

Blind Flange Pressure Ratings

Pressure-Temperature Ratings for ASTM Group 2-1.1 Materials

Working pressure by Classes, BAR

Temp

-29 °C

150 300 400 600 900 1500 2500
38 19.6 51.1 68.1 102.1 153.2 255.3 425.5
50 19.2 50.1 66.8 100.2 150.4 250.6 417.7
100 17.7 46.6 62.1 93.2 139.8 233 388.3
150 15.8 45.1 60.1 90.2 135.2 225.4 375.6
200 13.8 43.8 58.4 87.6 131.4 219 365
250 12.1 41.9 55.9 83.9 125.8 209.7 349.5
300 10.2 39.8 53.1 79.6 119.5 199.1 331.8
325 9.3 38.7 51.6 77.4 116.1 193.6 322.6
350 8.4 37.6 50.1 75.1 112.7 187.8 313
375 7.4 36.4 48.5 72.7 109.1 181.8 303.1
400 6.5 34.7 46.3 69.4 104.2 173.6 289.3
425 5.5 28.8 38.4 57.5 86.3 143.8 239.7
450 4.6 23 30.7 46 69 115 191.7
475 3.7 17.4 23.2 34.9 52.3 87.2 145.3
500 2.8 11.8 15.7 23.5 35.3 58.8 97.9
538 1.4 5.9 7.9 11.8 17.7 29.5 49.2
Temp

°C

150 300 400 600 900 1500 2500

 

Pressure-Temperature Ratings for ASTM Group 2-2.3 Materials

Working pressure by Classes, BAR

Temp

-29 °C

150 300 400 600 900 1500 2500
38 15.9 41.4 55.2 82.7 124.1 206.8 344.7
50 15.3 40 53.4 80 120.1 200.1 333.5
100 13.3 34.8 46.4 69.6 104.4 173.9 289.9
150 12 31.4 41.9 62.8 94.2 157 261.6
200 11.2 29.2 38.9 58.3 87.5 145.8 243
250 10.5 27.5 36.6 54.9 82.4 137.3 228.9
300 10 26.1 34.8 52.1 78.2 130.3 217.2
325 9.3 25.5 34 51 76.4 127.4 212.3
350 8.4 25.1 33.4 50.1 75.2 125.4 208.9
375 7.4 24.8 33 49.5 74.3 123.8 206.3
400 6.5 24.3 32.4 48.6 72.9 121.5 202.5
425 5.5 23.9 31.8 47.7 71.6 119.3 198.8
450 4.6 23.4 31.2 46.8 70.2 117.1 195.1
Temp

°C

150 300 400 600 900 1500 2500

ASME B16.5 Blind Flange Available Types

Blind Raised Face Flange Manufacturing Company Raised Faced Blind Flange Manufacturers
ANSI B16.5 Blind Flange Manufacturing Company Blind Flange Dimensions
ASME B16.5 Blind Flange Manufacturers ANSI B16.5 Class 150 Blind Flange
Stainless Steel Blind Flange Suppliers SS Blind Flange Manufacturing Company
Blind Plate Flange Dealer ASME B16.47 Series A and B Blind Flange Exporter
ANSI B16.5 class 150 Blind Flange Stockholder ANSI 150 Blind Flange Distributors
Carbon Steel Blind Flange Manufacturing Company High Quality Blind Flange Manufacturer
ASTM A182 Stainless Steel Blind Flange Duplex Steel Blind Flange Manufacturing Company
Super Duplex Steel Blind Forged Flange Copper Nickel Blind Pipe Flange
High Nickel Alloy Blind Flange Manufacturers Hastelloy Flat Faced Blind Flange Stockist
Titanium ASME B16.47 Series A and B Blind Flange Inconel Blind Flange

Blind Flange Price List

Blind Flange type Blind Flange Price in USD
Stainless Steel Blind Flange USD $ 71.02 /Kg
Carbon steel Blind Flange USD $27.80 /Kg
Alloy steel Blind Flange USD $ 32.75 /Kg
ANSI b16 5 Blind Flange USD $ 23.99 /Kg
ASME b16.47 Blind Flange USD $ 60.62 /Kg

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