Blind Flange



1.Materials:

Carbon Steel:ASTM A105,ASTM A350 LF1,LF2,LF3,A36,ASTM A234 WPB,etc

Stainless Steel:ASTM A182 F304/304L, 316/316L,316Ti,321,317L,310S,etc

Alloy Steel:A182 F1,F5,F9,F11,F12,22,F22,F91,etc  

Duplex Stainless Steel: S31803(SAF2205),S32750(SAF2507),S31500(3RE60)

 

2:Standards:ANSI/ASME B16.5,B16.36,B16.47,AWWA C207,DIN,BS,SABS/SANS,MSS SP44,ISO,API Flange,etc

 

Dimensions & Masses of ANSI B16.5 Blind Flange Class 150/300/600

ANSI, ASME, ASA, B16.5 150lb/sq.in. Blind Flange 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


NOTE:

1. Class 150 flanges except Lap Joint will be furnished with 0.06 (1.6mm) raised face, which is included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).

2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.

3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).

5. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.

ANSI, ASME, ASA, B16.5 300lb/sq.in. Blind Flange 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


NOTE:

1. Class 300 flanges except Lap Joint will be furnished with 0.06 (1.6mm) raised face, which is included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).

2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.

3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).

5. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.


ANSI, ASME, ASA, B16.5 600lb/sq.in. Blind Flange 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


NOTE:

1. Class 600 flanges except Lap Joint will be furnished with 0.25 (6.35mm) raised face, which is not included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).

2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.

3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.

4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).

5. Dimensions of sizes 1/2 through 3 1/2 are the same as for Class 400 Flanges.

6. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.

 

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