Blind Flange

Stainless Steel Blind Flange In India and Carbon Steel Forged BLRF Flanges manufacturer in India as per ASME B16.5

A blind flange is a flange that doesn’t have a boring center or a hub. These blind flanges have a similar bolting system, face thickness and a matching face type. The Stainless Steel Blind Flanges are used to seal high-pressure vessel nozzles. These stainless flanges are highly resistant to corrosion and don’t deform under extreme temperatures. These flanges are bolted to the pipe thereby, giving easy access to the interior of the pipe. We are one of the top Blind Flange Manufacturers in India who focuses on creating high-quality products at the most reasonable prices.

View Carbon Steel Plate BLRF Flange Price List, ANSI B16.5 Class 150 Flat Face Blind Flange Sizes

The ASME B16.5 BLRF Flange is produced from a plate, cast, or forged materials. The dimensions of this flange are considered perfect to be used by industrialists, manufacturers, suppliers, and architects. The ANSI B16.5 Class 150 Flat Face Blind Flange is used in combination with other ASME B16 series. These flanges are used in regulating low fluid and gases. These are mostly used in non-critical and low-cost applications.

The Alloy Steel Blank Flanges are made up of molybdenum, nickel, chromium, and other elements in small traces. These elements help to increase the strength, toughness, and wear resistance of the product. The high content of carbon in Carbon Steel Blind Flanges gives them a higher melting point. Further, these flanges are malleable, have good durability, and better heat distribution. The Ductile Iron Blind Flange is manufactured using centrifugal casting in metal or resin. All our blind flanges are manufactured using the best raw materials and the latest technology. If you want to know more about our blind flanges or want to customized them contact us for more details.

Blind Flange Specification

Size  1/2″ (15 NB) to 48″ (1200NB)
Standards  ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings.
Pressure Ratings PN6, PN10, PN16, PN25, PN40, PN64 etc.
Pressure class  150#, 300#, 600#, 1500#
Dimensions and Pressure Ratings for Blind Flanges MSS- SP-44, BS3293, ANSI, Table D, E, F, & H, BS4504, PN6, 10, 16, 25, 64 BS10, DIN Standards
Flange Face Type Manufacturer Raised Face (RF), Flate Face (FF), Ring Type Joint (RTJ)
Coating/Surface Treatment Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized.
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Manufacturer of

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.

Blind Flange: -BS, EN, API 6A, ANSI, ASME, DIN, EN1092-1, UNI, JIS/ KS , BS4504, GB, AWWA C207, GOST, PSI

  • B.S: BS4504 , BS3293, BS1560, BS10
  • AS 2129: Table D; Table E; Table H
  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • American standard (ANSI)
  • German (DIN)
  • British standard (BS)
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276

blind flange price list

Class 150 Blind Flange Dimensions

Blind Flange Dimensions

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

Reliable Manufacturer of Alloy Steel Ported Blind Flange

Class 300 Blind Flange Dimensions In Mm

Blind Flange Dimensions

PipeNormalDiam. O.D.Flanges Thk.OfFlangesMin DiameterofRaisedFace Diam.ofBoltCircle Diam.ofBoltHoles NumberofBolts Diam.ofBolts(inch) Approx.Weight inch dn O C G BC BH BN BD KG/PCS LB/PCS 1/2″ 15 95.5 14.2 35.1 66.5 15.7 4 1/2″ 0.8 1.8 3/4″ 20 117.5 15.7 42.9 82.6 19.1 4 5/8″ 1.2 2.6 1″ 25 124.0 17.5 50.8 88.9 19.1 4 5/8″ 1.5 3.3 11/4″ 32 133.5 19.1 63.5 98.6 19.1 4 5/8″ 2 4.4 11/2″ 40 155.5 20.6 73.2 114.3 22.4 4 5/8″ 2.9 6.4 2″ 50 165.0 22.4 91.9 127 19.1 8 5/8″ 3.5 7.7 21/2″ 65 190.5 25.4 104.6 149.4 22.4 8 3/4″ 5.3 11.7 3″ 80 209.5 28.4 127 168.1 22.4 8 3/4″ 7.2 15.9 31/2″ 90 228.5 30.2 139.7 184.2 22.4 8 3/4″ 9.2 20.3 4″ 100 254.0 31.8 157.2 200.2 22.4 8 3/4″ 12.2 26.8 5″ 125 279.5 35.1 185.7 235 22.4 8 3/4″ 16 35.2 6″ 150 317.5 36.6 215.9 269.7 22.4 12 3/4″ 22 48.4 8″ 200 381.0 41.1 269.7 330.2 25.4 12 7/8″ 36 79.5 10″ 250 444.5 47.8 323.9 387.4 28.4 16 1″ 55 121 12″ 300 520.5 50.8 381 450.9 31.8 16 11/8″ 82.5 182 14″ 350 584.0 53.8 412.8 514..4 31.8 20 11/8″ 108 238 16″ 400 647.5 57.2 469.9 571.5 35.1 20 11/4″ 139 306 18″ 450 711.0 60.5 533.4 628.7 35.1 24 11/4″ 178 392 20″ 500 774.5 63.5 584.2 685.8 35.1 24 11/4″ 228 503 24″ 600 914.5 69.9 692.2 812.8 41.1 24 11/2″ 350 772

Class 600 Blind Flange Dimensions

Blind Flange Dimensions

ANSI/ASME/ASAB16.5600lb/sq.in.FlangesBLIND-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 11/4″ 133,3 20,6 63,5 98,4 4 19,0 2,000 11/2″ 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 21/2″ 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 31/2″ 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

Class 900 Blind Flange Dimensions

Blind Flange Dimensions

NOM PIPE SIZE OD Bolt Circle (BC) Raised Face (R) Raised Face (RF) Raised Face Thickness (T) Flat Face Thickness (T2) Bolt Hole (B) No. of Bolt Holes
3" 9.50" 7.50" 5.00" .250" 1.75" 1.50" 1.00" 8
4" 11.50" 9.25" 6.19" .250" 2.00" 1.75" 1.25" 8
5" 13.75" 11.00" 7.31" .250" 3.25" 3.00" 1.38" 8
6" 15.00" 12.50" 8.50" .250" 2.44" 2.19" 1.25" 12
8" 18.50" 15.50" 10.63" .250" 2.75" 2.50" 1.50" 12
10" 21.50" 18.50" 12.75" .250" 3.00" 2.75" 1.50" 16
12" 24.00" 21.00" 15.00" .250" 3.38" 3.13" 1.50" 20
14" 25.25" 22.00" 16.25" .250" 3.63" 3.38" 1.63" 20
16" 27.75" 24.25" 18.50" .250" 3.75" 3.50" 1.75" 20
18" 31.00" 27.00" 21.00" .250" 4.25" 4.00" 2.00" 20
Check Pressure Rating Of 6 Inch/ 8 Inch/ 10 Inch Ductile Iron Blind Flange

Sae Blind Flange Types

Weight Chart of Carbon Steel Blind Flange

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

Dimensions of Pn16 Stainless Steel Blind Flange

DIN 2527 PN16 BLIND FLANGE
Rated
Diameter
Flange Screws Weight
(7,85 Kg/dm3)
D b k Number Thread d2 Shape B
Kg
15 95 14 65 4 M 12 14 0,72
20 105 16 75 1,01
25 115 16 85 1,23
32 140 16 100 M 16 18 1,8
40 150 16 110 2,09
50 165 18 125 2,88
65 185 18 145 3,66
80 200 20 160 8 4,77
100 220 20 180 5,65
125 250 22 210 8,42
150 285 22 240 M 20 22 10,4
200 340 24 295 12 16,1
250 405 26 355 M 24 26 24,9
300 460 28 410 35,1
350 520 30 470 16 47,8
400 580 32 525 M 27 30 63,5
500 715 36 650 20 M 30 33 102
View Class 150/ 300 Forged Carbon Steel Blind Flange sizes and Weight Chart

JIS Blind Flange Dimensions

JIS 5K Blind Flange Dimensions

Pipe Pipe Bo D t T G f r H X C Holes Bolt Dia.
inch mm
3/8 10 17.3 17.8 +0.5
0
75 +1.0
0
9 +1.0
0
±1.0 42 ±0.8 1 +2.0
0
+2.0
0
55 ±0.5 4 12
1/2 15 21.7 22.2 80 9 48 1 60 4 12
3/4 20 27.2 27.7 85 10 52 1 65 4 12
1 25 34.0 34.5 95 10 62 1 75 4 12
11/4 32 42.7 43.2 115 12 72 2 90 4 15
11/2 40 48.6 49.1 120 12 78 2 95 4 15
2 50 60.5 61.1 130 14 88 2 105 4 15
21/2 65 76.3 77.1 155 14 112 2 130 4 15
3 80 89.1 90.0 180 14 125 2 145 4 19
31/2 90 101.6 102.6 +1.0
0
190 14 135 2 155 4 19
4 100 114.3 115.4 200 16 145 2 165 8 19
5 125 139.8 141.2 235 16 180 2 200 8 19
6 150 165.2 166.6 265 18 210 2 230 8 19
7 175 190.7 192.1 300 18 235 ±0.9 2 260 ±0.6 8 23
8 200 216.3 218.0 320 +1.5
0
20 255 2 280 8 23
9 225 241.8 243.7 345 20 280 2 305 12 23
10 250 267.4 269.5 385 22 +1.5
0
32 320 2 5 286 290 345 12 23
12 300 318.5 321.0 430 22 34 365 3 5 338 342 390 12 23
14 350 355.6 358.1 480 24 36 405 3 5 378 382 435 12 25
16 400 406.4 409.0 +1.5
0
540 24 36 465 3 5 432 436 495 16 25
18 450 457.2 460.0 605 +2.0
0
24 40 525 3 5 495 500 555 ±0.8 16 25
20 500 508.0 511.0 655 24 40 575 3 5 546 552 605 20 25
22 550 558.8 562.0 720 26 42 630 3 5 597 603 665 20 27
24 600 609.6 613.0 +2.0
0
770 26 44 680 ±1.0 3 5 648 654 +2.5
0
715 20 27
26 650 660.4 664.0 825 26 48 735 3 5 702 +2.5
0
708 770 24 27
28 700 711.2 715.0 875 26 48 785 3 5 751 758 820 24 27
30 750 762.0 766.0 945 28 52 ±1.5 840 3 5 802 810 880 24 33
32 800 812.8 817.0 +2.5
0
995 28 52 890 3 5 854 +3.0
0
862 +3.0
0
930 24 33
34 850 863.6 868.0 1045 +2.5
0
28 54 940 3 5 904 912 980 ±1.0 24 33
36 900 914.4 919.0 1095 30 56 990 3 5 956 964 1030 24 33
40 1000 1016.0 1021.0 +3.0
0
1195 32 60 1090 ±1.2 3 5 1058 +3.5
0
1066 +3.5
0
1130 28 33
44 1100 1117.6 1123.0 1305 32 1200 3 1240 28 33
48 1200 1219.2 1224.0 1420 34 1305 3 1350 32 33
54 1350 1371.6 1377.0 1575 +3.0
-0
34 1460 3 1505 ±1.5 32 33
60 1500 1524.0 1529.0 1730 36 1615 3 1660 36 33

JIS 10K Blind Flange Dimensions

Pipe Pipe Bo D t T G f r H X C Holes Bolt Dia.
inch mm
3/8 10 17.3 17.8 +0.5
-0
90 +1.0
-0
12 +1.0
-0
±1.0 48 ±0.8 1 +1.5
-0
+1.5
-0
65 ±0.5 4 15
1/2 15 21.7 22.2 95 12 52 1 70 4 15
3/4 20 27.2 27.7 100 14 58 1 75 4 15
1 25 34.0 34.5 125 14 70 1 90 4 19
1-1/4 32 42.7 43.2 135 16 80 2 100 4 19
1-1/2 40 48.6 49.1 140 16 85 2 105 4 19
2 50 60.5 61.1 155 16 100 2 120 4 19
2-1/2 65 76.3 77.1 175 18 120 2 140 4 19
3 80 89.1 90.0 185 18 130 2 150 8 19
3-1/2 90 101.6 102.6 +1.0
-0
195 18 140 2 160 8 19
4 100 114.3 115.4 210 18 155 2 175 8 19
5 125 139.8 141.2 250 20 185 2 210 8 23
6 150 165.2 166.6 280 22 +1.5
-0
215 2 240 8 23
7 175 190.7 192.1 305 +1.5
-0
22 32 240 ±0.9 2 6 208 212 265 ±0.6 12 23
8 200 216.3 218.0 330 22 32 265 2 6 234 238 290 12 23
9 225 241.8 243.7 350 22 34 285 2 6 260 264 310 12 23
10 250 267.4 269.5 400 24 36 325 2 6 288 292 355 12 25
12 300 318.5 321.0 445 24 38 370 3 6 340 346 400 16 25
14 350 355.6 358.1 490 26 42 415 3 6 380 386 445 16 25
16 400 406.4 409.0 +1.5
-0
560 28 44 475 3 6 436 442 510 16 27
18 450 457.2 460.0 620 +2.0
-0
30 48 530 3 6 496 +2.0
-0
502 +2.0
-0
565 ±0.8 20 27
20 500 508.0 511.0 675 30 48 585 3 6 548 554 620 20 27
22 550 558.8 562.0 745 32 52 ±1.5 640 3 6 604 610 680 20 33
24 600 609.6 613.0 +2.0
-0
795 32 52 690 ±1.0 3 6 656 +2.5
-0
662 +2.5
-0
730 24 33
26 650 660.4 664.0 845 34 56 740 3 6 706 712 780 24 33
28 700 711.2 715.0 905 34 58 800 3 6 762 770 840 24 33
30 750 762.0 766.0 970 36 62 855 3 6 816 824 900 24 33
32 800 812.8 817.0 +2.5
-0
1020 +2.5
-0
36 64 905 3 6 868 +3.0
-0
876 +3.0
-0
950 28 33
34 850 863.6 868.0 1070 36 66 955 3 6 920 928 1000 ±1.0 28 33
36 900 914.4 919.0 1120 38 70 1005 ±1.2 3 6 971 979 1050 28 33
40 1000 1016.0 1021.0 +3.0
-0
1235 40 74 1110 3 6 1073 +3.5
-0
1081 +3.5
-0
1160 28 39
44 1100 1117.6 1123.0 1345 42 78 1220 3 8 1175 1185 1270 28 39
48 1200 1219.2 1224.0 1465 44 82 1325 3 8 1278 1290 1380 ±1.5 32 39
54 1350 1371.6 1377.0 1630 +3.0
-0
48 88 1480 3 8 1432 1450 1540 36 45
60 1500 1524.0 1529.0 1795 50 90 1635 3 8 1585 1600 1700 40 45

JIS 16K Blind Flange Dimensions

Pipe Pipe Bo D t T G f r H X C Holes Bolt Dia.
inch mm
3/8 10 17.3 17.8 +0.5
-0
90 +1.0
-0
12 +1.0 16 ±1.0 48 ±0.8 1 4 26 +1.0
-0
28 +1.0
-0
65 ±0.5 4 15
1/2 15 21.7 22.2 95 12 16 52 1 4 30 32 70 4 15
3/4 20 27.2 27.7 100 14 20 58 1 4 38 42 75 4 15
1 25 34.0 34.5 125 14 20 70 1 4 46 50 90 4 19
1-1/4 32 42.7 43.2 135 16 22 80 2 5 56 60 100 4 19
1-1/2 40 48.6 49.1 140 16 24 85 2 5 62 66 105 4 19
2 50 60.5 61.1 155 16 24 100 2 5 76 80 120 8 19
2-1/2 65 76.3 77.1 175 18 26 120 2 5 94 98 140 8 19
3 80 89.1 90.0 200 20 28 135 2 6 108 112 160 8 23
3-1/2 90 101.6 102.6 +1.0
-0
210 20 30 145 2 6 120 124 170 8 23
4 100 114.3 115.4 225 22 +1.5
-0
34 160 2 6 134 138 185 8 23
5 125 139.8 141.2 270 22 34 195 2 6 164 170 225 8 25
6 150 165.2 166.6 305 +1.5
-0
24 38 230 ±0.9 2 6 196 202 260 ±0.6 12 25
7 175 190.7 192.1 325 26 40 250 2 6 216 222 +1.5
-0
280 12 25
8 200 216.3 218.0 350 26 40 275 2 6 244 +1.5
-0
252 305 12 25
9 225 241.8 243.7 385 26 40 325 2 6 266 272 335 12 27
10 250 267.4 269.5 430 28 44 345 2 6 304 312 380 12 27
12 300 318.5 321.0 480 30 48 395 3 8 354 364 430 16 27
14 350 355.6 358.1 540 34 52 ±1.5 440 3 8 398 408 480 16 33
16 400 406.4 409.0 +1.5
-0
605 +2.0
-0
38 60 495 3 10 446 456 +2.0
-0
540 16 33
18 450 457.2 460.0 675 40 64 560 3 10 504 +2.0
-0
514 605 ±0.8 20 33
20 500 508.0 511.0 730 42 68 615 3 10 558 568 660 20 33
22 550 558.8 562.0 795 44 70 670 ±1.0 3 10 612 622 720 20 39
24 600 609.6 613.0 +2.0
-0
845 46 74 720 3 10 666 +2.5
-0
676 +2.5
-0
770 24 39
26 650 660.4 664.0 895 48 77 770 5 10 704 726 820 24 39
28 700 711.2 715.0 960 50 80 820 5 10 754 776 875 24 42
30 750 762.0 766.0 1020 +2.5
-0
52 +2.0
-0
83 880 5 10 806 832 935 24 42
32 800 812.8 817.0 +2.5
-0
1085 54 86 930 5 10 865 +3.0
-0
885 +3.0
-0
990 ±1.0 24 48
34 850 863.6 868.0 1135 56 89 980 5 10 916 936 1040 24 48
36 900 914.4 919.0 1185 58 93 1030 ±1.2 5 10 968 986 1090 28 48
40 1000 1016.0 1021.0 +3.0
-0
1320 62 99 1140 5 12 1070 +3.5
-0
1098 +3.5
-0
1210 28 56
44 1100 1117.6 1123.0 1420 66 105 ±2.0 1240 5 12 1180 1200 1310 32 56
48 1200 1219.2 1225.0 1530 +3.0
-0
70 112 1350 5 12 1282 1302 1420 ±1.5 32 56
52 1300 1320.8 1326.0 1645 74 1450 5 1530 32 62
54 1350 1371.6 1377.0 1700 76 1510 5 1590 32 62
56 1400 1422.4 1428.0 1755 78 1560 5 1640 36 62
60 1500 1524.0 1529.0 1865 80 1670 5 1750 36 62

Pressure Ratings of Ansi Blind Flange

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

Tolerances Of Alloy Steel Blind Flange

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 mm6.35 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 mmEccentricity 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

Available Material of Reducing Blind Flange

Stainless Steel ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Titanium 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
Brass 3602 / 2604 / H59 / H62 / etc.
Monel ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Alloy Steel ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Carbon Steel ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 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)
Inconel ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750
Hastelloy ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flanges
Copper Nickel ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Copper 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, etc
Aluminium 5052 /6061/ 6063 / 2017 / 7075 / etc.
Incoloy ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flanges
Super Duplex S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Alloy 20 ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Duplex S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
254 Smo ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547
Nimonic Nimonic 75, Nimonic 80A, Nimonic 90
Nickel ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Other material Tin bronze, Alumunum bronze, Lead bronze

Check Material we Manufacturer and Exported in Below Countries

EN545 Ductile Cast Iron Blind Flange PN16 Finland, USA, Malaysia, Bangladesh
Stainless steel 304 ANSI DIN blind flange Malaysia, Turkey, United Arab Emirates (UAE), Norway
ASME 16.5 Carbon Steel Blind Forged Flange Thailand, France, Qatar, Europe
blind flange 300# 4'' Stainless Steel 304 UAE, Malaysia, Oman, Hong Kong
DUPLEX 2205 ASME B16.5 1/2" - 24" 150# RF FF RTJ BL BL BLIND FLANGE China, Colombia, Sweden, Malaysia
F22 Alloy steel flange blind flange Belgium, Indonesia, Dammam -KSA, Philippines
ANSI B16.5 grade2 150# press class titanium blind flange Nigeria, Australia, Philippines, UK
Jis 10k blind flange FF stainless steel 304 Singapore, Italy, Chile, Iran
150# 8 inches astm b16.5 stainless steel rtj f316 BLIND flange Singapore, South Africa, Bahrain, Singapore
Titanium blind exhaust flange 4" ANSI 150lbs 300 ibs class gr2 Brazil, Saudi Arabia (KSA), South Africa, Kuwait
Stainless Steel F304L DN100 PN25 RF Blind Flange Malaysia, South Korea, Singapore, NY 12203 (USA)
Astm a350 Lf2 Cl1 Cl2 Blind Flange Malaysia, Germany, Czechia, Thailand
stainless steel blank blind flange Singapore, Malaysia, Philippines, Canada
ANSI B16.5 Forged Steel Blind Flange, ASTM A105, DN300, PN50 Philippines, Taiwan, Malaysia, Los Alamos -Mexico
PN16 Blind Raised Face BLRF 8″ Carbon Steel A105 Black-painting Ellington -United States, Canada, UK, Poland
ASTM Nickel Alloy Steel 1 1/4″ 300 # Blind Flange rf Malaysia, Japan, Europe, Romania
ANSI B16.5 Blind Flange, PN100, DN250, ASTM A105N, RF Ends Dubai, Malaysia, Netherlands, Russia
AWWA C207 Class d Flat Face Blind Flange UK, Spain, Egypt, Mexico
Class 150 Blind Flange EN 1092-1 Type 02 UAE, Europe, United Kingdom -UK, Malaysia