Providing the Energy Industry with
Isolation Piping Products

Blind Flange Specifications

  • CLASS 150#
  • CLASS 300#
  • CLASS 600#
  • CLASS 900#
  • CLASS 1500#
  • CLASS 2500#

CLASS 150# BLIND FLANGE ANSI B16.50

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF.5150 1/2" 3-1/2" 3/8" 2
BF.75150 3/4" 3-7/8" 7/16" 2
BF1150 1" 4-1/4" 1/2" 2
BF1.25150 1-1/4" 4-5/8" 9/16" 3
BF1.5150 1-1/2" 5" 5/8" 4
BF2150 2" 6" 11/16" 5
BF2.5150 2-1/2" 7" 13/16" 7
BF3150 3" 7-1/2" 7/8" 9
BF3.5150 3-1/2" 8-1/2" 7/8" 13
BF4150 4" 9" 7/8" 17
BF5150 5" 10" 7/8" 20
BF6150 6" 11" 15/16" 27
BF8150 8" 13-1/2" 1-1/16" 47
BF10150 10" 16" 1-1/8" 70
BF12150 12" 19" 1-3/16" 123
BF14150 14" 21" 1-15/16" 140
BF16150 16" 23-1/2" 1-3/8" 180
BF18150 18" 25" 1-1/2" 220
BF20150 20" 27-1/2" 1-5/8" 285
BF22150 22" 29-1/2" 1-3/4" 355
BF24150 24" 32" 1-13/16" 430

CLASS 150# BLIND FLANGE ASME B16.47 (SERIES A)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF26150SA 26" 34-1/4" 2-5/8" 702
BF28150SA 28" 36-1/2" 2-3/4" 833
BF30150SA 30" 38-3/4" 2-7/8" 982
BF32150SA 32" 41-3/4" 3-1/8" 1,237
BF34150SA 34" 43-3/4" 3-3/16" 1,384
BF36150SA 36" 46" 3-1/2" 1,676
BF38150SA 38" 48-3/4" 3-3/8" 1,819
BF40150SA 40" 50-3/4" 3-1/2" 2,040
BF42150SA 42" 53" 3-3/4" 2,381
BF44150SA 44" 55-1/4" 3-15/16" 2,717
BF46150SA 46" 57-1/4" 4" 2,961
BF48150SA 48" 59-1/2" 4-3/16" 3,348
BF50150SA 50" 61-3/4" 4-5/16" 3,716
BF52150SA 52" 64" 4-1/2" 4,156
BF54150SA 54" 66-1/4" 4-11/16" 4,639
BF56150SA 56" 68-3/4" 4-13/16" 5,132
BF58150SA 58" 71" 5" 5,675
BF60150SA 60" 73" 5-1/8" 6,154

CLASS 150# BLIND FLANGE ASME B16.47 (SERIES B)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD Thickness Weight
BF26150SB 26" 30-15/16" 1-11/16" 373
BF28150SB 28" 32-15/16" 1-13/16" 454
BF30150SB 30" 34-15/16" 1-15/16" 543
BF32150SB 32" 37-1/16" 2-1/16" 648
BF34150SB 34" 39-9/16" 2-3/16" 783
BF36150SB 36" 41-5/8" 2-1/4" 890
BF38150SB 38" 44-1/4" 2-7/16" 1,089
BF40150SB 40" 46-1/4" 2-9/16" 1,247
BF42150SB 42" 48-1/4" 2-5/8" 1,393
BF44150SB 44" 50-1/4" 2-3/4" 1,579
BF46150SB 46" 52-13/16" 2-7/8" 1,824
BF48150SB 48" 54-13/16" 3" 2,045
BF50150SB 50" 56-13/16" 3-1/8" 2,284
BF52150SB 52" 58-13/16" 3-1/4" 2,547
BF54150SB 54" 61" 3-3/8" 2,846
BF56150SB 56" 63" 3-1/2" 3,144
BF58150SB 58" 65-15/16" 3-5/8" 3,560
BF60150SB 60" 67-15/16" 3-3/4" 3,913

CLASS 300# BLIND FLANGE ANSI B16.50

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF.5300 1/2" 3-3/4" 1/2" 2
BF.75300 3/4" 4-5/8" 9/16" 3
BF1300 1" 4-7/8" 5/8" 4
BF1.25300 1-1/4" 5-1/4" 11/16" 6
BF1.5300 1-1/2" 6-1/8" 3/4" 7
BF2300 2" 6-1/2" 13/16" 8
BF2.5300 2-1/2" 7-1/2" 15/16" 12
BF3300 3" 8-1/4" 1-1/16" 16
BF3.5300 3-1/2" 9" 1-1/8" 21
BF4300 4" 10" 1-3/16" 28
BF5300 5" 11" 1-5/16" 37
BF6300 6" 12-1/2" 1-3/8" 50
BF8300 8" 15" 1-9/16" 81
BF10300 10" 17-1/2" 1-13/16" 124
BF12300 12" 20-1/2" 1-15/16" 185
BF14300 14" 23" 2-1/16" 250
BF16300 16" 25-1/2" 2-3/16" 315
BF18300 18" 28" 2-5/16" 414
BF20300 20" 30-1/2" 2-7/16" 515
BF22300 22" 33" 2-9/16" 640
BF24300 24" 36" 2-11/16" 800

CLASS 300# BLIND FLANGE ASME B16.47 (SERIES A)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF26300SA 26" 38-1/4" 3-1/4" 1,078
BF28300SA 28" 40-3/4" 3-1/2" 1,315
BF30300SA 30" 43" 3-11/16" 1,543
BF32300SA 32" 45-1/4" 3-7/8" 1,795
BF34300SA 34" 47-1/2" 4-1/16" 2,068
BF36300SA 36" 50" 4-5/16" 2,436
BF38300SA 38" 46" 4-3/16" 2,001
BF40300SA 40" 48-3/4" 4-7/16" 2,380
BF42300SA 42" 50-3/4" 4-5/8" 2,688
BF44300SA 44" 53-1/4" 4-13/16" 3,079
BF46300SA 46" 55-3/4" 5" 3,499
BF48300SA 48" 57-3/4" 5-3/16" 3,896
BF50300SA 50" 60-1/4" 5-7/16" 4,442
BF52300SA 52" 62-1/4" 5-5/8" 4,906
BF54300SA 54" 65-1/4" 5-15/16" 5,684
BF56300SA 56" 67-1/4" 6" 6,098
BF58300SA 58" 69-1/4" 6-3/16" 6,669
BF60300SA 60" 71-1/4" 6-3/8" 7,274

CLASS 300# BLIND FLANGE ASME B16.47 (SERIES B)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD Thickness Weight
BF26300SB 26" 34-1/8" 3-7/16" 907
BF28300SB 28" 36-1/4" 3-7/16" 1,023
BF30300SB 30" 39" 3-5/8" 1,249
BF32300SB 32" 41-1/2" 4" 1,556
BF34300SB 34" 43-5/8" 4" 1,719
BF36300SB 36" 46-1/8" 4" 1,921
BF38300SB 38" 48-1/8" 4-5/16" 2,257
BF40300SB 40" 50-1/8" 4-1/2" 2,549
BF42300SB 42" 52-1/2" 4-5/8" 2,876
BF44300SB 44" 54-1/2" 4-15/16" 3,304
BF46300SB 46" 57-1/2" 5-1/16" 3,766
BF48300SB 48" 59-1/2" 5-1/4" 4,183
BF50300SB 50" 61-1/2" 5-7/16" 4,629
BF52300SB 52" 63-1/2" 5-5/8" 5,096
BF54300SB 54" 65-7/8" 5-13/16" 5,678
BF56300SB 56" 69-1/2" 6-1/8" 6,642
BF58300SB 58" 71-15/16" 6-5/16" 7,347
BF60300SB 60" 73-15/16" 6-1/2" 7,980

CLASS 600# BLIND FLANGE ANSI B16.50

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF.5600 1/2" 3-3/4" 9/16" 3
BF.75600 3/4" 4-5/8" 5/8" 4
BF1600 1" 4-7/8" 11/16" 4
BF1.25600 1-1/4" 5-1/4" 13/16" 6
BF1.5600 1-1/2" 6-1/8" 7/8" 8
BF2600 2" 6-1/2" 1" 10
BF2.5600 2-1/2" 7-1/2" 1-1/8" 15
BF3600 3" 8-1/4" 8-1/4" 20
BF3.5600 3-1/2" 9" 1-3/8" 29
BF4600 4" 10-3/4" 1-1/2" 41
BF5600 5" 13" 1-3/4" 68
BF6600 6" 14" 1-7/8" 86
BF8600 8" 16-1/2" 2-3/16" 140
BF10600 10" 20" 2-1/2" 231
BF12600 12" 22" 2-5/8" 295
BF14600 14" 23-3/4" 2-3/4" 378
BF16600 16" 27" 3" 527
BF18600 18" 29-1/4" 3-1/4" 665
BF20600 20" 32" 3-1/2" 855
BF22600 22" 34-1/4 3-3/4" 1000
BF24600 24" 37" 4" 1250

CLASS 600# BLIND FLANGE ASME B16.47 (SERIES A)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF26600SA 26" 40" 4-15/16" 1,759
BF28600SA 28" 42-1/4" 5-3/16" 2,061
BF30600SA 30" 44-1/2" 5-1/2" 2,423
BF32600SA 32" 47" 5-13/16" 2,856
BF34600SA 34" 49" 6-1/16" 3,237
BF36600SA 36" 51-3/4" 6-3/8" 3,802
BF38600SA 38" 50" 6-1/8" 3,404
BF40600SA 40" 52" 6-3/8" 3,838
BF42600SA 42" 55-1/4" 6-3/4" 4,585
BF44600SA 44" 57-1/4" 7" 5,105
BF46600SA 46" 59-1/2" 7-5/16" 5,758
BF48600SA 48" 62-3/4" 7-11/16" 6,737
BF50600SA 50" 65-3/4" 8" 7,695
BF52600SA 52" 67-3/4" 8-1/4" 8,426
BF54600SA 54" 70" 8-9/16" 9,333
BF56600SA 56" 73" 8-7/8" 10,529
BF58600SA 58" 75" 9-1/8" 11,414
BF60600SA 60" 78-1/2" 9-9/16" 13,108

CLASS 600# BLIND FLANGE ASME B16.47 (SERIES B)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD Thickness Weight
BF26600SB 26" 35" 4-3/8" 1,194
BF28600SB 28" 37-1/2" 4-9/16" 1,427
BF30600SB 30" 40-1/4" 5" 1,802
BF32600SB 32" 42-3/4" 5-5/16" 2,159
BF34600SB 34" 45-3/4" 5-11/16" 2,645
BF36600SB 36" 47-3/4" 5-15/16" 3,013
BF38600SB 38" 50" 6-1/8" 3,404
BF40600SB 40" 52" 6-3/8" 3,838
BF42600SB 42" 55-1/4" 6-3/4" 4,585
BF44600SB 44" 57-1/4" 7" 5,105
BF46600SB 46" 59-1/2" 7-5/16" 5,758
BF48600SB 48" 62-3/4" 7-11/16" 6,737
BF50600SB 50" 65-3/4" 8" 7,695
BF52600SB 52" 67-3/4" 8-1/4" 8,426
BF54600SB 54" 70" 8-9/16" 9,333
BF56600SB 56" 73" 8-7/8" 10,529
BF58600SB 58" 75" 9-1/8" 11,414
BF60600SB 60" 78-1/2" 9-9/16" 13,108

CLASS 900# BLIND FLANGE ANSI B16.50

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF.5900 1/2" 4-3/4" 7/8" 4
BF.75900 3/4" 5-1/8" 1" 6
BF1900 1" 5-7/8" 1-1/8" 9
BF1.25900 1-1/4" 6-1/4" 1-1/8" 10
BF1.5900 1-1/2" 7" 1-1/4" 14
BF2900 2" 8-1/2" 1-1/2" 25
BF2.5900 2-1/2" 9-5/8" 1-5/8" 32
BF3900 3" 9-1/2" 1-1/2" 35
  3-1/2"      
BF4900 4" 11-1/2" 1-3/4" 54
BF5900 5" 13-3/4" 2" 87
BF6900 6" 15" 2-3/16" 115
BF8900 8" 18-1/2" 2-1/2" 200
BF10900 10" 21-1/2" 2-3/4" 290
BF12900 12" 24" 3-1/8" 415
BF14900 14" 25-1/4" 3-3/8" 520
BF16900 16" 27-3/4" 2-1/2" 619
BF18900 18" 31" 4" 880
BF20900 20" 33-3/4" 4-1/4" 1107
22"
BF24900 24" 41" 5-1/2" 2099

CLASS 900# BLIND FLANGE ASME B16.47 (SERIES A)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF26900SA 26" 42-3/4" 6-5/16" 2,566
BF28900SA 28" 46" 6-3/4" 3,178
BF30900SA 30" 48-1/2" 7-13/16" 3,758
BF32900SA 32" 51-3/4" 7-5/8" 4,541
BF34900SA 34" 55" 8-1/16" 5,425
BF36900SA 36" 57-1/2" 8-7/16" 6,209
BF38900SA 38" 57-1/2" 8-1/2" 6,253
BF40900SA 40" 59-1/2" 8-13/16" 6,940
BF42900SA 42" 61-1/2" 9-1/8" 7,675
BF44900SA 44" 64-7/8" 9-9/16" 8,954
BF46900SA 46" 68-1/4" 10-1/16" 10,426
BF48900SA 48" 70-1/4" 10-3/8" 11,398

CLASS 900# BLIND FLANGE ASME B16.47 (SERIES B)

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD Thickness Weight
BF26900SB 26" 40-1/4" 6-1/16" 2,184
BF28900SB 28" 43-1/2" 6-9/16" 2,762
BF30900SB 30" 46-1/2" 6-15/16" 3,334
BF32900SB 32" 48-3/14" 7-5/16" 3,865
BF34900SB 34" 51-3/4" 7-11/16" 4,576
BF36900SB 36" 53" 7-15/16" 4,963
BF38900SB 38" 57-1/2" 8-1/2" 6,253
BF40900SB 40" 59-1/2" 8-13/16" 6,940
BF42900SB 42" 61-1/2" 9-1/8" 7,675
BF44900SB 44" 64-7/8" 9-9/16" 8,954
BF46900SB 46" 68-1/4" 10-1/16" 10,426
BF48900SB 48" 70-1/4" 10-3/8" 11,398

CLASS 1500# BLIND FLANGE ANSI B16.50

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF.51500 1/2" 4-3/4" 7/8" 4
BF.751500 3/4" 5-1/8" 1" 6
BF11500 1" 5-7/8" 1-1/8" 9
BF1.251500 1-1/4" 6-1/4" 1-1/8" 10
BF1.51500 1-1/2" 7" 1-1/4" 14
BF21500 2" 8-1/2" 1-1/2" 25
BF2.51500 2-1/2" 9-5/8" 1-5/8" 35
BF31500 3" 10-1/2" 1-7/8" 48
  3-1/2"      
BF41500 4" 12-1/4" 2-1/8" 73
BF51500 5" 14-3/4" 2-7/8" 140
BF61500 6" 15-1/2" 3-1/4" 160
BF81500 8" 19" 3-5/8" 302
BF101500 10" 23" 4-1/4" 510
BF121500 12" 26-1/2" 4-7/8" 775
BF141500 14" 29-1/2" 5-1/4" 975
BF161500 16" 32-1/2" 5-3/4" 1300
BF181500 18" 36" 6-3/8" 1750
BF201500 20" 38-3/4" 7" 2225
  22"      
BF241500 24" 46" 8" 3625

CLASS 2500# BLIND FLANGE ANSI B16.50

ITEM ID SIZE OD Thickness Weight
ITEM ID SIZE OD THK WEIGHT
BF.52500 1/2" 5-1/4" 1-3/16" 7
BF.752500 3/4" 5-1/2" 1-1/4" 10
BF12500 1" 6-1/4" 1-3/8" 12
BF1.252500 1-1/4" 7-1/4" 1-1/2" 18
BF1.52500 1-1/2" 8" 1-3/4" 25
BF22500 2" 9-1/4" 2" 39
BF2.52500 2-1/2" 10-1/2" 2-1/4" 56
BF32500 3" 12" 2-5/8" 86
  3-1/2"      
BF42500 4" 14" 3" 133
BF52500 5" 16-1/2" 3-5/8" 223
BF62500 6" 19" 4-1/4" 345
BF82500 8" 21-3/4" 5" 533
BF102500 10" 26-1/2" 6-1/2" 1025
BF122500 12" 30" 7-1/4" 1464

Call (409) 736-7665 to Purchase or Rent Blind Flanges

Our goal at Hydro Blind Solutions is to provide industrial piping products to help finish a job on time and on budget. We’ve worked with a lot of businesses worldwide to get them the blind flanges they need. We make sure that you get the best out there so you can get your jobs done quickly and efficiently. Some of the industries that we’ve worked with are:

  • Refinery
  • Pipeline
  • Construction
  • Oilfield
  • Fabrication
  • Engineering
  • Offshore drilling
  • Liquefied natural gas (LNG)

Ready to purchase or rent blind flanges for your company? We ship worldwide! Give us a call at (409) 736-7665 or fill out a contact form and let’s talk.