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304 Stainless Steel Blind Flange Manufacturer

View ASTM A182 Grade F316 Spectacle Blind Flange specification & dimensions

Stainless Steel Blind Flanges

CS Flange BLRF Specification

Standards Specification Of : Stainless Steel Blind Flange
Pressure Rating ANSI 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Production technique
  • Heat treated, Forged and machined
Most common types Threaded / Screwed / Forged / Plate
Japanese Standards 5K, 10 K, 40 K, 16 K 20 K 30 K, 63 K
Manufacturing Shapes RTJ,FF, Raised Face, Lap-Joint Face, Large Tongue & Groove And Small Tongue Groove, Large Male-Female And Small Male-Female
Size Chart 1/2" to 48"
Flanges Standards MSS S44, ISO70051, EN-1092, ANSI/ASME B16.5, B16.47 Series A & B, ASME B16.48, ASME B16.36, DIN, BS1560-3.1, API7S-15, API, ISO, UNI, AWWA C207, IS 2062, EN1092, API7S-43, API605, BS4504


Stainless Steel Blind Flange 150 Dimensions

Normal Pipe Size "A"
(O.D.)		 "B"
(Thick.)		 "C"
(RF Dia.)		 "D"
(B.C.D.)		 # Bolt
Holes		 Dia. of
Bolt Holes		 Approx.
Weight
1/2" 3-1/2 7/16 1-3/8 2-3/8 4 5/8 2
3/4" 3-7/8 1/2 1-11/16 2-3/4 4 5/8 2
1" 4-1/4 9/16 2 3-1/8 4 5/8 2
1-1/4" 4-5/8 5/8 2-1/2 3-1/2 4 5/8 3
1-1/2" 5 11/16 2-7/8 3-7/8 4 5/8 3
2" 6 3/4 3-5/8 4-3/4 4 3/4 4
2-1/2" 7 7/8 4-1/8 5-1/2 4 3/4 7
3" 7-1/2 15/16 5 6 4 3/4 9
3-1/2" 8-1/2 15/16 5-1/2 7 8 3/4 13
4" 9 15/16 6-3/16 7-1/2 8 3/4 17
5" 10 15/16 7-5/16 8-1/2 8 7/8 20
6" 11 1 8-1/2 9-1/2 8 7/8 27
8" 13-1/2 1-1/8 10-5/8 11-3/4 8 7/8 47
10" 16 1-3/16 12-3/4 14-1/4 12 1 67
12" 19 1-1/4 15 17 12 1 123
14" 21 1-3/8 16-1/4 18-3/4 12 1-1/8 139
16" 23-1/2 1-7/16 18-1/2 21-1/4 16 1-1/8 187
18" 25 1-9/16 21 22-3/4 16 1-1/4 217
20" 27-1/2 1-11/16 23 25 20 1-1/4 283
24" 32 1-7/8 27-1/4 29-1/2 20 1-3/8 415


Mechanical Joint Blind Flange Class 300 Dimensions

Normal Pipe Size "A"
(O.D.)		 "B"
(Thick.)		 "C"
(RF Dia..)		 "D"
(B.C.D.)		 # Bolt
Holes		 Dia. of
Bolt Holes		 Approx.
Weight
1/2" 3-3/4 9/16 1-3/8 2-5/8 4 5/8 2
3/4" 4-5/8 5/8 1-11/16 3-1/4 4 3/4 3
1" 4-7/8 11/16 2 3-1/2 4 3/4 4
1-1/4" 5-1/4 3/4 2-1/2 3-7/8 4 3/4 6
1-1/2" 6-1/8 13/16 2-7/8 4-1/2 4 7/8 7
2" 6-1/2 7/8 3-5/8 5 8 3/4 8
2-1/2" 7-1/2 1 4-1/8 5-7/8 8 7/8 12
3" 8-1/4 1-1/8 5 6-5/8 8 7/8 16
3-1/2" 9 1-3/16 5-1/2 7-1/4 8 7/8 21
4" 10 1-1/4 6-3/16 7-7/8 8 7/8 28
5" 11 1-3/8 7-5/16 9-1/4 8 7/8 37
6" 12-1/2 1-7/16 8-1/2 10-5/8 12 7/8 48
8" 15 1-5/8 10-5/8 13 12 1 79
10" 17-1/2 1-7/8 12-3/4 15-1/4 16 1-1/8 122
12" 20-1/2 2 15 17-3/4 16 1-1/4 183
14" 23 2-1/8 16-1/4 20-1/4 20 1-1/4 241
16" 25-1/2 2-1/4 18-1/2 22-1/2 20 1-3/8 315
18" 28 2-3/8 21 24-3/4 24 1-3/8 414
20" 30-1/2 2-1/2 23 27 24 1-3/8 515
24" 36 2-3/4 27-1/4 32 24 1-5/8 800


Raised Face Blind Flange Weight Chart

Standard Class Dia. Bolt Circle Dia. Number of Bolts Bolt Size Dia. of Bolt Hole
AS4087 PN14 95 67 4 M12 14
AS 2129 Flange Table C 95 67 4 13 14
Table D 95 67 4 13 14
Table E 95 67 4 13 14
Table F 95 67 4 13 14
Table H 114 83 4 16 17
Table J 114 83 4 16 17
ANSI B16.5 ANSI 150 89 60 4 13 16
ANSI 300 95 67 4 13 16
ANSI 600 95 67 4 13 16
ANSI 900 121 83 4 19 22
ANSI 1500 121 83 4 19 22
ISO 7005 (DIN) Flange PN6 80 55 4 M10 11
PN10 95 65 4 M12 14
PN16 95 65 4 M12 14
PN20 90 60.5 4 M14 16
PN25 95 65 4 M12 14
PN40 95 65 4 M12 14


Carbon Steel Blind Flange Pressure Rating

ANSI/ASME B16.5 ANSI PRESSURE RATING
Temperature °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 275 720 960 1440 2160 3600 6000
200 230 600 800 1200 1800 3000 5000
300 205 540 720 1080 1620 2700 4500
400 190 495 660 995 1490 2485 4140
500 170 465 620 930 1395 2330 3880
600 140 435 580 875 1310 2185 3640
650 125 430 575 860 1290 2150 3580
700 110 425 565 850 1275 2125 3540
750 95 415 555 830 1245 2075 3460
800 80 405 540 805 1210 2015 3360
850 65 395 530 790 1190 1980 3300
900 50 390 520 780 1165 1945 3240
950 35 380 510 765 1145 1910 3180
1000 20 320 430 640 965 1605 2675
1050 20 310 410 615 925 1545 2570
1100 20 255 345 515 770 1285 2145
1150 20 200 265 400 595 995 1655
1200 20 155 205 310 465 770 1285
1250 20 115 150 225 340 565 945
1300 20 85 115 170 255 430 715
1350 20 60 80 125 185 310 515
1400 20 50 65 95 145 240 400
1450 15 35 45 70 105 170 285
1500 10 25 35 55 80 135 230