Threaded Flanges

BSP/ NPT Carbon Steel Screw Flanges and Stainless Steel threaded reducing flange exporter in Mumbai.

Stainless Steel Threaded Flange

Stainless Steel Threaded Flange

ASME B16.5 Threaded Flange

ASME B16.5 Threaded Flange

Carbon Steel Threaded Flanges

Carbon Steel Threaded Flanges


What Is Threaded Flange?


Stainless Steel Threaded Flange range from ½ inch to 4 inches in common usage. They have threads which make them be screwed onto the pipe rather than be welded. Screwed Flanges can be used in systems where welding is not possible. The asme b16.5 threaded Flange dimensions vary according to the needs but their diameters are usually below NPS 4 standard. Some pn16 npt flanges can withstand pressures up to 16 bars. There are different types such as the BSP Flanges which could be used to thread in two pipes of different diameters. The national pipe threaded or npt threaded Flanges are a variation of flanges.

Table E Screwed Flanges

Table E Screwed Flanges

ANSI B16.5 NPT Flange

ANSI B16.5 NPT Flange

BSP Flanges

BSP Flanges


use of screwed flanges in piping systems

Use Of Screwed Flanges In Piping Systems?

They are also used to thread in PVC pipes. There are different grades such as the din 2566 threaded flange. A stainless steel threaded flange can also be welded if the application permits. The welding provides extra sealing of the connection but not necessarily increasing the strength of the connection. This type is called weld on threaded flange and is not common in chemical or oil and gas applications where explosion is a threat. The npt threaded Flanges manufacturer produces them in different capacities.


Do Threaded Flanges Have A Schedule?

asme b16.5 threaded flange could be used to connect two pipes of different diameters through the bore to make a joint.npt flange are common in plumbing applications. Where welding is not a problem and pressures are high, threaded weld neck flange could be used and welded to seal the connection for extra strength and leakage proof. The range of bsp flange is also available in different pressure classes such as ansi 150 threaded flange dimensions. Depending on the need to fit different sizes of pipes together, the reducing threaded flange ASME B16.5 is also used. Their applications include all types of fluid flow systems and hydraulics. There’s a fair deviation of threaded flange price in india due to the supply and demand factors, including the transportation costs and locations.


Threaded Flange Drawing


Threaded Flange Drawing

ASME B16.5 Threaded Flange Dimensions

Normal Pipe Size O.D. of Flange

A

Raised Face Diameter

B

Flange Thickness

C

Hub at Base Diameter

J

Hub Length

L

min. Thread Length

N

No. of Bolt Holes

Approx. Weight

(Lbs.)

1/2 3 1/2 1 3/8 7/16 1 3/16 5/8 5/8 4 2
3/4 3 7/8 1 11/16 1/2 1 1/2 5/8 5/8 4 2
1 4 1/4 2 9/16 1 15/16 11/16 11/16 4 2
1 1/4 4 5/8 2 1/2 5/8 2 5/16 13/16 13/16 4 3
1 1/2 5 2 7/8 11/16 2 9/16 7/8 7/8 4 3
2 6 3 5/8 3/4 3 7/16 1 1 4 5
2 1/2 7 4 1/8 7/8 3 9/16 1 1/8 1 1/8 4 7
3 7 1/2 5 15/16 4 1/4 1 3/16 1 3/16 4 8
3 1/2 8 1/2 5 1/2 15/16 4 13/16 1 1/4 1 1/4 8 11
4 9 6 3/16 15/16 5 5/16 1 5/16 1 5/16 8 13
5 10 7 5/16 15/16 6 7/16 1 7/16 1 7/16 8 15
6 11 8 1/2 1 7 9/16 1 9/16 1 9/16 8 19
8 13 1/2 10 5/8 1 1/8 9 11/16 1 3/4 1 3/4 8 30
10 16 12 3/4 1 3/16 12 1 15/16 1 15/16 12 43
12 19 15 1 1/4 14 3/8 2 3/16 2 3/16 12 64
14 21 16 1/4 1 3/8 15 3/4 2 1/4 2 1/4 12 85
16 23 1/2 18 1/2 1 7/16 18 2 1/2 2 1/2 16 93
18 25 21 1 9/16 19 7/8 2 11/16 2 11/16 16 120
20 27 1/2 23 1 11/16 22 2 7/8 2 7/8 20 155
22 29 1/2 25 1/4 1 13/16 24 3 1/8 3 1/8 20 159
24 32 27 1/4 1 7/8 26 1/8 3 1/4 3 1/4 20 210

Class 150 Threaded Flange Dimensions


Nominal Bore Of Threaded Diameter Of (D) Thickness Of(E) Diameter(F) Diameter(B) Height1(H) Nbr Holes Diameter(C)
1/2″ 90 9.6 35.05 30 14 4 15.87 60.3
3/4″ 100 11.2 42.92 38 14 4 15.87 69.9
1″ 110 12.7 50.80 49 16 4 15.87 79.4
1 1/4″ 115 14.3 63.50 59 19 4 15.87 88.9
1 1/2″ 125 15.9 73.15 65 21 4 15.87 98.4
2″ 150 17.5 91.94 78 24 4 19.05 120.7
2 1/2″ 180 20.7 104.65 90 27 4 19.05 139.7
3″ 190 22.3 127.00 108 29 4 19.05 152.4
3 1/2″ 215 22.3 139.70 122 30 8 19.05 177.8
4″ 230 22.3 157.22 135 32 8 19.05 190.5
5″ 255 22.3 185.67 164 35 8 22.22 215.9
6″ 280 23.9 215.90 192 38 8 22.22 241.3
8″ 345 27.0 269.75 246 43 8 22.22 298.5
10″ 405 28.6 323.85 305 48 12 25.40 362.0
12″ 485 30.2 381.00 365 54 12 25.40 431.8
14″ 535 33.4 412.75 400 56 12 28.57 476.3
16″ 595 35.0 469.90 457 62 16 28.57 539.8
18″ 635 38.1 533.40 505 67 16 31.75 577.9
20″ 700 41.3 584.20 559 71 20 31.75 635.0
24″ 815 46.1 692.15 663 81 20 34.92 749.3

Class 300 Threaded Flange Dimensions


Nominal Bore Of Threaded Diameter Of (D) Thickness Of(E) Diameter(F) Diameter(B) Diameter(A) Height1(H) Nbr Holes Diameter(C)
1/2″ 95 12.7 35.05 38 23.6 21 4 15.87 66.7
3/4″ 115 14.3 42.92 48 29.0 24 4 19.05 82.6
1″ 125 15.9 50.80 54 35.8 25 4 19.05 88.9
1 1/4″ 135 17.5 63.50 64 44.4 25 4 19.05 98.4
1 1/2″ 155 19.1 73.15 70 50.3 29 8 22.22 114.3
2″ 165 20.7 91.94 84 63.5 32 8 19.05 127.0
2 1/2″ 190 23.9 104.65 100 76.2 37 8 22.22 149.2
3″ 210 27.0 127.00 117 92.2 41 8 22.22 168.3
3 1/2″ 230 28.6 139.70 133 104.9 43 8 22.22 184.2
4″ 255 30.2 157.22 146 117.6 46 8 22.22 200.0
5″ 280 33.4 185.67 178 144.4 49 8 22.22 235.0
6″ 320 35.0 215.90 206 171.4 51 12 22.22 269.9
8″ 380 39.7 269.75 260 222.2 60 12 25.40 330.2
10″ 445 46.1 323.85 321 276.2 65 16 28.57 387.4
12″ 520 49.3 381.00 375 328.6 71 16 31.75 450.8
14″ 585 52.4 412.75 425 360.4 75 20 31.75 514.4
16″ 650 55.6 469.90 483 411.2 81 20 34.92 571.5
18″ 710 58.8 533.40 533 462.0 87 24 34.92 628.6
20″ 775 62.0 584.20 587 512.8 94 24 34.92 685.8
24″ 915 68.3 692.15 702 614.4 105 24 41.27 812.8

Class 400 Threaded Flange Dimensions

Normal Pipe SizesI.D.O.D.Circle Of Bolt (BC)Raised Face (R)Raised Face (RF)HThickness Of Raised Face (T)T1Thickness Of Flat Face (T2)Bolt Hole (B)Number of Bolt Holes
1/20.933.752.620.12.2501.501.130.560.880.624
3/41.144.623.250.12.2501.881.250.621.000.754
11.414.883.500.12.2502.121.310.691.060.754
1-1/41.755.253.880.19.2502.501.370.811.120.754
1-1/21.996.124.500.25.2502.751.500.881.250.884
22.506.505.000.31.2503.311.691.001.440.758
2-1/23.007.505.880.31.2503.941.871.121.620.888
33.638.256.620.38.2504.622.061.251.810.888
3-1/24.139.007.250.38.2505.252.191.381.941.008
44.6310.007.880.44.2505.752.251.382.001.008
55.6911.009.250.44.2507.002.371.502.121.008
66.7512.5010.620.50.2508.122.501.622.251.0012
88.7515.0013.000.50.25010.252.941.882.691.1212
1010.8817.5015.250.50.25012.623.132.122.881.2516
1212.9420.5017.750.50.25014.753.372.253.121.3816
1414.1923.0020.250.50.25016.753.562.383.311.3820
1616.1925.5022.500.50.25019.003.942.503.691.5020
1818.1928.0024.750.50.25021.004.132.623.881.5024
2020.1930.5027.000.50.25023.124.252.754.001.6224
2222.1933.0029.250.50.25025.254.502.884.251.7524
2424.1936.0032.000.50.25027.624.753.004.501.8824

Class 600 Threaded Flange Dimensions


Nominal Bore Of Threaded Diameter Of (D) Thickness Of(E) Diameter(F) Diameter(B) Diameter(A) Height1(H) Nbr Holes Diameter(C)
1/2″ 95 14.3 35.05 38 23.6 22 4 15.87 66.7
3/4″ 115 15.9 42.92 48 29.0 25 4 19.05 82.6
1″ 125 17.5 50.80 54 35.8 27 4 19.05 88.9
1 1/4″ 135 20.7 63.50 64 44.4 29 4 19.05 98.4
1 1/2″ 155 22.3 73.15 70 50.6 32 4 22.22 114.3
2″ 165 25.4 91.94 84 63.5 37 8 19.05 127.0
2 1/2″ 190 28.6 104.65 100 76.2 41 8 22.22 149.2
3″ 210 31.8 127.00 117 92.2 46 8 22.22 168.3
3 1/2″ 230 35.0 139.70 133 104.9 49 8 25.40 184.2
4″ 275 38.1 157.22 152 117.6 54 8 25.40 215.9
5″ 330 44.5 185.67 189 144.4 60 8 28.57 266.7
6″ 355 47.7 215.90 222 171.4 67 12 31.75 292.1
8″ 420 55.6 269.75 273 222.2 76 12 31.75 349.2
10″ 510 63.5 323.85 343 276.2 86 16 34.92 431.8
12″ 560 66.7 381.00 400 328.6 92 20 34.92 489.0
14″ 605 69.9 412.75 432 360.4 94 20 38.10 527.0
16″ 685 76.2 469.90 495 411.2 106 20 41.27 603.2
18″ 745 82.6 533.40 546 462.0 117 20 44.45 654.0
20″ 815 88.9 584.20 610 512.8 127 24 44.45 723.9
24″ 940 101.6 692.15 718 614.4 140 24 47.62 838.2

Class 900 Threaded Flange Dimensions

Normal Pipe Size
Flanges
I.D. O.D. Circle Of Bolt (BC) Raised Face (R) Raised Face (RF) H Thickness Of Raised Face (T) T1 Thickness Of Flat Face (T2) Bolt Hole (B) Number of Bolt Holes
1/2 0.93 4.75 3.25 1.38 .250 1.50 1.50 0.88 1.25 0.88 4
3/4 1.14 5.13 3.50 1.69 .250 1.75 1.63 1.00 1.38 0.88 4
1 1.41 5.88 4.00 2.00 .250 2.06 1.88 1.13 1.63 1.00 4
1-1/4 1.75 6.25 4.38 2.50 .250 2.50 1.88 1.13 1.63 1.00 4
1-1/2 1.99 7.00 4.88 2.88 .250 2.75 2.00 1.25 1.75 1.13 4
2 2.50 8.50 6.50 3.63 .250 4.13 2.50 1.50 2.25 1.00 8
2-1/2 3.00 9.63 7.50 4.13 .250 4.88 2.75 1.63 2.50 1.13 8
3 3.63 9.50 7.50 5.00 .250 5.00 2.38 1.50 2.13 1.00 8
4 4.63 11.50 9.25 6.19 .250 6.25 3.00 1.75 2.75 1.25 8
5 5.69 13.75 11.00 7.31 .250 7.50 3.38 3.00 3.13 1.38 8
6 6.75 15.00 12.50 8.50 .250 9.25 3.63 2.19 3.38 1.25 12
8 8.75 18.50 15.50 10.63 .250 11.75 4.25 2.50 4.00 1.50 12
10 10.88 21.50 18.50 12.75 .250 14.50 4.50 2.75 4.25 1.50 16
12 12.94 24.00 21.00 15.00 .250 16.50 4.88 3.13 4.63 1.50 20
14 14.19 25.25 22.00 16.25 .250 17.75 5.38 3.38 5.13 1.63 20
16 16.19 27.75 24.25 18.50 .250 20.00 5.50 3.50 5.25 1.75 20
18 18.19 31.00 27.00 21.00 .250 22.25 6.25 4.00 6.00 2.00 20
20 20.19 33.75 29.50 23.00 .250 24.50 6.50 4.25 6.25 2.13 20
24 24.19 41.00 35.50 27.25 .250 29.50 8.25 5.50 8.00 2.63 20

Class 1500 Threaded Flange Dimensions

Normal Pipe Size
Flanges
I.D. O.D. Circle Of Bolt (BC) Raised Face (R) Raised Face (RF) H Thickness Of Raised Face (T) T1 Thickness Of Flat Face (T2) Bolt Hole (B) Number of Bolt Holes
1/2 0.93 4.75 3.25 1.38 .250 1.50 1.50 0.88 1.25 0.88 4
3/4 1.14 5.13 3.50 1.69 .250 1.75 1.63 1.00 1.38 0.88 4
1 1.41 5.88 4.00 2.00 .250 2.06 1.88 1.13 1.63 1.00 4
1-1/4 1.75 6.25 4.38 2.50 .250 2.50 1.88 1.13 1.63 1.00 4
1-1/2 1.99 7.00 4.88 2.88 .250 2.75 2.00 1.25 1.75 1.13 4
2 2.50 8.50 6.50 3.63 .250 4.13 2.50 1.50 2.25 1.00 8
2-1/2 3.00 9.63 7.50 4.13 .250 4.88 2.75 1.63 2.50 1.13 8

Class 2500 Threaded Flange Dimensions

Normal Pipe Size
Flanges
I.D. O.D. Circle Of Bolt (BC) Raised Face (R) Raised Face (RF) H Thickness Of Raised Face (T) T1 Thickness Of Flat Face (T2) Bolt Hole (B) Number of Bolt Holes
1/2 0.93 5.25 3.50 1.38 .250 1.69 1.81 1.19 1.56 0.88 4
3/4 1.14 5.50 3.75 1.69 .250 2.00 1.94 1.25 1.69 0.88 4
1 1.41 6.25 4.25 2.00 .250 2.25 2.13 1.38 1.88 1.00 4
1-1/4 1.75 7.25 5.13 2.50 .250 2.88 2.31 1.50 2.06 1.13 4
1-1/2 1.99 8.00 5.75 2.88 .250 3.13 2.63 1.75 2.38 1.25 4
2 2.50 9.25 6.75 3.63 .250 3.75 3.00 2.00 2.75 1.13 8
2-1/2 3.00 10.50 7.75 4.13 .250 4.50 3.38 2.25 3.13 1.25 8

Finding Stainless steel threaded flange manufacturers for custom sizes? We produce ASTM A182 F304/ 316 screwed flanges up to 24 inches in accordance with ASME/ ANSI B16.5.

Threaded Pipe Flange Specification Chart

Material Specification Of : ASME B16.5 Threaded Flange
Low Temperature Above -29 Degree C (−20°F)
Common Types Of Flanges: Slip On (SORF), Weld Neck (WNRF), Blind (BLRF), Lap Joint (Loose), Threaded (NPT), Socket-Weld (SWRF)
Special Types Of Flanges : Nipoflange, Elboflange, Latroflange, Swivel Flanges, Expanding Flanges, Reducing Flanges, Weldoflange
Marking Standard Name of Manufacturer
Schedule
Type of Flange Facing
Nominal Pipe Size
Pressure Class
ASME B16 Designation
Bolt Type high strength bolts
medium strength bolts
low strength bolts
European Standard Flanges JIS B2220 Flanges (5k to 30k) and KS1503 flanges
Russian-Standard Flanges GOST 12820 / 12821-80, DIN, UNI, EN 1092-1
South African Standard Flanges SANSflanges And SABS flanges
Surface Finish smooth, concentric serrated, stock
Standard Cover : pressure ratings & temperature ratings, materials, marking, dimensions, weight, tolerances, testing
Contact Faces RTJ (Ring Type Joint), FF (Flat Face), RF (Raised Face), T/G (Tongue And Groove ), M/F (Male And Female)
Size Chart Normal Pipe Size 1/2 to NPS 24"
Materials Stainless Steel (Grade 304/L, 316/L), Carbon Steel (ASTM A105 And ASTM A350), Alloy Steel (ASTM A182), Mild Steel, Duplex Steel, Pressure Vessel Steel, Titanium, Super Duplex Steel, Nickel Alloy, Monel, Inconel, Hastelloy, Copper Nickel, Cast Iron, Wrought Iron.
Thickness Normal Pipe Size ≤ 18
Bore Diameter Normal Pipe ≤ 10
Flanges Standards EN 1092-1, JIS, ASME B16.5, ASME B16.47 type A, UNI, DIN
Pressure Rating Class 150 To Class 2500
High Temperature Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Gaskets Types Full Face Gasket
Flat Ring Gasket
Metallic Ring Gakset
Advantages Of Pipe Flange Used to Connect Pipe System
Easy Repair Pipe System
Assembled Without Welding
Threaded Flange Price List In India
Type Of Flanges Size Material Class Price In India (INR)
Threaded Flanges 1/2" ASTM A105 Class 150 120.00
NPT/BSP 3/4" ASTM A105 Class 150 170.00
NPT/BSP 1" ASTM A105 Class 150 230.32
NPT/BSP 1-1/2" ASTM A105 Class 150 300.00
NPT/BSP 2" ASTM A105 Class 300 634.00
NPT/BSP 3" ASTM A105 Class 300 814.00
NPT/BSP 4" ASTM A105 Class 300 1180.00
NPT/BSP 6" ASTM A105 Class 300 1530.40

Please note this is an approx Price of Carbon Steel Threaded Flange in Mumbai, India. For final Threaded Flange Price List Please Call on 91 - 22 - 67437342 or drop an Email to info@rajtilakmetal.com


 Stainless Steel Threaded Flange

Looking To Buy Female Threaded Flange? Contact Rajtilak Metal, A Reliable Bsp Flanges Supplier in India.


High Pressure Threaded Flange Weight

Nominal Pipe Sizes (NPS) Slip On (SORF) Threaded (NPT) Socket Weld (SWRF) Lap Joint (Loose) Blind (BLRF) Weld Neck (WRNR)
½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
3 3 3 3 4 4
2 5 5 5 5 5 6
8 8 8 8 7 10
3 9 9 9 9 9 11.5
11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268

Female Threaded Flange Size Chart

DN In inchesDimensionASME B16.5 Dimensional Sizes 1/2 inches to 2 1/2 inches
125 LBS
150 LBS
300 LBS400 LBS600 LBS900 LBS1500 LBS2500 LBS
inchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeter
1/2A3 1/288.93 3/495.23 3/495.23 3/495.24 3/41214 3/41215 1/4133.4
b7/1611.19/1614.39/1614.39/1614.37/822.27/822.21 3/1630.2
D21 3/834.91 3/834.91 3/834.91 3/834.91 3/834.91 3/834.91 3/834.9
D12 3/860.32 5/866.72 5/866.72 5/866.73 1/482.63 1/482.63 1/288.9
n44444444444-444
d5/815.95/815.95/815.95/815.97/822.27/822.27/822.2
3/4A3 7/898.44 5/8117.54 5/8117.54 5/8117.55 1/81305 1/81305 1/2139.7
b1/212.75/815.95/815.95/815.9125.4125.41 1/431.8
D21 11/1642.91 11/1642.91 11/1642.91 11/1642.91 11/1642.91 11/1642.91 11/1642.9
D12 3/469.83 1/482.53 1/482.53 1/482.53 1/288.93 1/288.93 3/495.2
n44444444444-444
d5/815.93/4193/4193/4197/822.27/822.27/822.2
1A4 1/41084 7/8123.84 7/8123.84 7/8123.85 7/8149.25 7/8149.26 1/4159
b9/1614.311/1617.511/1617.511/1617.51 1/828.61 1/828.61 3/834.9
D2250.8250.8250.8250.8250.8250.8250.8
D13 1/879.43 1/288.93 1/288.93 1/288.9410241024 1/4108
n44444444444444
d5/815.93/4193/4193/419125.4125.4125.4
1 1/4A4 5/8117.55 1/4133.45 1/4133.45 1/4133.46 1/41596 1/41597 1/4184.2
b5/815.93/41913/1620.613/1620.61 1/828.61 1/828.61 1/238.1
D22 1/263.52 1/263.52 1/263.52 1/263.52 1/263.52 1/263.52 1/263.5
D13 1/288.93 7/898.43 7/898.43 7/898.44 3/81114 3/81115 1/8130
n44444444444444
d5/815.93/4193/4193/419125.4125.41 1/828.6
1 1/2A51276 1/8155.66 1/8155.66 1/8155.67177.87177.88203
b11/1617.513/1620.67/822.27/822.21 1/431.81 1/431.81 3/444.5
D22 7/873 982 7/8732 7/8732 7/8732 7/8732 7/8732 7/873
D13 7/844 1/21144 1/21144 1/21144 7/81244 7/81245 3/4146
n44444444444444
d5/8. 15.97/822.27/822.27/822.21 1/828.61 1/828.61 1/431.8
2A6152.46 1/2165.16 1/2165.16 1/2165.18 1/2215.98 1/2215.99 1/4234.9
b3/4197/822.2125.4125.41 1/238.11 1/238.1250.8
D23 5/892.13 5/892.13 5/892.13 5/892.13 5/892.13 5/892.13 5/892.1
D14 3/41215127512751276 1/2165.16 1/2165.16 3/4171
n44888888888888
d3/4193/4193/4193/419125.4125.41 1/828.6
2 1/2A7177.87 1/2190.57 1/2190.57 1/2190.59 5/82449 5/824410 1/2266.7
b7/822.2125.41 1/828.61 1/828.61 5/841.31 5/841.32 1/457.2
D24 1/8104.84 1/8104.84 1/8104.84 1/8104.84 1/81054 1/81054 1/8105
D15 1/2139.75 7/8149.25 7/8149.25 7/8149.27 1/2190.57 1/2190.57 3/4197
n44888888888888
d3/4197/822.27/822.27/822.21 1/828.61 1/828.61 1/431.8

View SS Threaded Flanges Pressure Test And ASTM A105 NPT Flange Thickness Calculation For Pressure Vessel.

Screwed Flanges Pressure Ratings

ASME B16.5 Threaded Flange Pressure Pressure
Temperature (°C)
Class
Class 150Class 300Class 400Class 600Class 900Class 1500Class 2500
-29 - 38 19.8 51.7 68.9 103.4 155 259 431
50 19.5 51.7 68.9 103.4 155 259 431
100 17.7 51.5 68.7 103.0 155 258 429
150 15.8 50.2 66.8 100.3 151 251 418
200 13.8 48.6 64.8 97.2 146 243 405
250 12.1 46.3 61.7 92.7 139 232 386
300 10.2 42.9 57.0 85.7 129 214 357
325 9.3 41.4 55.0 82.6 124 207 344
350 8.4 40.0 53.4 80.0 120 200 334
375 7.4 37.8 50.4 75.7 114 189 315
400 6.5 34.7 46.3 69.4 104 174 290
425 5.5 28.8 38.4 57.5 86.3 144 240
450 4.6 23.0 30.7 46.0 69.0 115 192
475 3.7 17.1 22.8 34.2 51.3 85.4 142
500 2.8 11.6 15.4 23.2 34.7 57.9 96.5
538 1.4 5.9 7.9 11.8 17.7 29.5 49.2

BSP Flange Dimensional Tolerances

ASME B16.5Tolerance
A Outside Diameter (O.D.)
  • When Outside Diameter (O.D.) is 24" or less: ±1/16" (1.6 mm)
  • When Outside Diameter (O.D.) is over 24": ±1/8" (3.2 mm)
D Inside Diameter
  • 10" and smaller: ±1/32" (0.8 millimeter)
  • 12" thru 18": +1/8" (3.2 millimeter)
  • 20" and larger: -1/16" (1.6 millimeter)
B Diameter of contact face
  • 1/16" raised face: ±1/32" (0.8 millimeter)
  • 1/4" Raised Face (RF), Tongue & Groove (T/G), (male & female), (m/f): ±1/64" (0.4 mm)
J Diameter of hub at base
  • When hub base is 24" or smaller: ±1/16" (1.6 millimeter)
  • When hub base is over 24": ±1/8" (3.2 millimeter)
H Diameter of hub at point of welding
  • 5" and smaller: +3/32" (2.4 millimeter), -1/32" (0.8 millimeter)
  • 6" and larger: +5/32" (4.0 millimeter), -1/32 (0.8 millimeter)
P Drilling
  • Bolt circle: ±1/16" (1.6 millimeter)
  • Bolt hole spacing: ±1/32" (0.8 millimeter)
  Eccentricity of bolt circle with respect to facing
  • 2 1/2" and smaller ±1/32" (0.8 millimeter) max.
  • 3" and larger ±1/16" (1.6 millimeter) max.
C Thickness
  • 18" and smaller: ±1/8" (3.2 millimeter), -0"
  • 20" and larger: ±3/16" (4.8 millimeter), -0"
K Length of hub
  • 10" and smaller: ±1/16" (1.6 millimeter)
  • 12" and larger: ±1/8" (3.2 millimeter)

NPT Flange Thickness Calculation

ANSI B16.5 Threaded Flanges Wall Thickness
NPS (Normal Pipe Sizes) Outside Daimeter (O.D.) Schedule 10 Schedule 20 Schedule 30 STD Wall Schedule 40 Schedule 60 EXT Hvy Schedule 80 Schedule 100 Schedule 120 Schedule 140 Schedule 160 XX Hvy
½ 0.84 0.083 ... ... 0.109 0.109 ... 0.147 0.147 ... ... ... 0.188 0.294
¾ 1.05 0.083 ... ... 0.113 0.113 ... 0.154 0.154 ... ... ... 0.219 0.308
1 1.315 0.109 ... ... 0.133 0.133 ... 0.179 0.179 ... ... ... 0.25 0.358
1 ¼ 1.66 0.109 ... ... 0.14 0.14 ... 0.191 0.191 ... ... ... 0.25 0.382
1 ½ 1.9 0.109 ... ... 0.145 0.145 ... 0.2 0.2 ... ... ... 0.281 0.4
2 2.375 0.109 ... ... 0.154 0.154 ... 0.218 0.218 ... ... ... 0.344 0.436
2 ½ 2.875 0.12 ... ... 0.203 0.203 ... 0.276 0.276 ... ... ... 0.375 0.552
3 3.5 0.12 ... ... 0.216 0.216 ... 0.3 0.3 ... ... ... 0.438 0.6
3 ½ 4 0.12 ... ... 0.226 0.226 ... 0.318 0.318 ... ... ... ... 0.636
4 4.5 0.12 ... ... 0.237 0.237 ... 0.337 0.337 ... 0.438 ... 0.531 0.674
5 5.563 0.134 ... ... 0.258 0.258 ... 0.375 0.375 ... 0.5 ... 0.625 0.75
6 6.625 0.134 ... ... 0.28 0.28 ... 0.432 0.432 ... 0.562 ... 0.719 0.864
8 8.625 0.148 0.25 0.277 0.322 0.322 0.406 0.5 0.5 0.594 0.719 0.812 0.906 0.875
10 10.75 0.165 0.25 0.307 0.365 0.365 0.5 0.5 0.594 0.719 0.844 1 1.125 1
12 12.75 0.18 0.25 0.33 0.375 0.406 0.562 0.5 0.688 0.844 1 1.125 1.312 1
14 14 0.25 0.312 0.375 0.375 0.438 0.594 0.5 0.75 0.938 1.094 1.25 1.406 ...
16 16 0.25 0.312 0.375 0.375 0.5 0.656 0.5 0.844 1.031 1.219 1.438 1.594 ...
18 18 0.25 0.312 0.438 0.375 0.562 0.75 0.5 0.938 1.156 1.375 1.562 1.781 ...
20 20 0.25 0.375 0.5 0.375 0.594 0.812 0.5 1.031 1.281 1.5 1.75 1.969 ...
22 22 0.25 ... ... 0.375 ... ... 0.5 ... ... .... .... .... ....
24 24 0.25 0.375 0.562 0.375 0.688 0.969 0.5 1.219 1.531 1.812 2.062 2.344 ....
26 26 .... .... .... 0.375 .... .... 0.5 .... .... .... .... .... ....
30 30 0.312 0.5 0.625 0.375 .... .... 0.5 .... .... .... .... .... ....
36 36 0.312 0.5 0.625 0.375 0.75 .... 0.5 .... .... .... .... .... ....
40 40 .... .... .... 0.375 .... .... 0.5 .... .... .... .... .... ....
42 42 …….. …….. …….. 0.375 …….. …….. 0.5 …….. …….. …….. …….. …….. ……..
48 48 …….. …….. …….. 0.375 …….. …….. 0.5 …….. …….. …….. …….. …….. ……..

Carbon Steel Threaded Flange Bolt Holes

Class 150 Flanges Class 300 Flanges Class 600 Flanges
NPS # Bolts And Studs Diameter of Bolts And Studs Stud Length # Bolts And Studs Diameter of Bolts And Studs Stud Length # Bolts And Studs Diameter of Bolts And Studs Stud Length
1/16 RF RTJ 1/16 RF RTJ 1/4 RF RTJ
1/2 4 0.50 2-1/4 4 0.50 2-1/2 3 4 0.50 3 3
3/4 4 0.50 2-1/2 4 0.63 3 3-1/2 4 0.63 3-1/2 3-1/2
1 4 0.50 2-1/2 3 4 0.63 3 3-1/2 4 0.63 3-1/2 3-1/2
1-1/4 4 0.50 2-3/4 3-1/4 4 0.63 3-1/4 3-3/4 4 0.63 3-3/4 3-3/4
1-1/2 4 0.50 2-3/4 3-1/4 4 0.75 3-1/2 4 4 0.75 4-1/4 4-1/4
2 4 0.63 3-1/4 3-3/4 8 0.63 3-1/2 4 8 0.63 4-1/4 4-1/4
2-1/2 4 0.63 3-1/2 4 8 0.75 4 4-1/2 8 0.75 4-3/4 4-3/4
3 4 0.63 3-1/2 4 8 0.75 4-1/4 4-3/4 8 0.75 5 5
3-1/2 8 0.63 3-1/2 4 8 0.75 4-1/4 5 8 0.88 5-1/2 5-1/2
4 8 0.63 3-1/2 4 8 0.75 4-1/2 5 8 0.88 5-3/4 5-3/4
5 8 0.75 3-3/4 4-1/4 8 0.75 4-3/4 5-1/4 8 1.00 6-1/2 6-1/2
6 8 0.75 4 4-1/2 12 0.75 4-3/4 5-1/2 12 1.00 6-3/4 6-3/4
8 8 0.75 4-1/4 4-3/4 12 0.88 5-1/2 6 12 1.13 7-1/2 7-3/4
10 12 0.88 4-1/2 5 16 1.00 6-1/4 6-3/4 16 1.25 8-1/2 8-1/2
12 12 0.88 4-3/4 5-1/4 16 1.13 6-3/4 7-1/4 20 1.25 8-3/4 8-3/4
14 12 1.00 5-1/4 5-3/4 20 1.13 7 7-1/2 20 1.38 9-1/4 9-1/4
16 16 1.00 5-1/4 5-3/4 20 1.25 7-1/2 8 20 1.50 10 10
18 16 1.13 5-3/4 6-1/4 24 1.25 7-3/4 8-1/4 20 1.63 10-3/4 10-3/4
20 20 1.13 6-1/4 6-3/4 24 1.25 8 8-3/4 24 1.63 11-1/4 11-1/2
24 20 1.25 6-3/4 7-1/4 24 1.50 9 10 24 1.88 13 13-1/4

 

Class 900 Flanges Class 1500 Flanges Class 2500 Flanges
NPS # Bolts And Studs Diameter of Bolts And Studs Stud Length # Bolts And Studs Diameter of Bolts And Studs Stud Length # Bolts And Studs Diameter of Bolts And Studs Stud Length
1/4 RF RTJ 1/4 RF RTJ 1/4 RF RTJ
1/2 4 0.75 4-1/4 4-1/4 4 0.75 4-1/4 4-1/4 4 0.75 4-3/4 4-3/4
3/4 4 0.75 4-1/2 4-1/2 4 0.75 4-1/2 4-1/2 4 0.75 5 5
1 4 0.88 5 5 4 0.88 5 5 4 0.88 5-1/2 5-1/2
1-1/4 4 0.88 5 5 4 0.88 5 5 4 1.00 6 6
1-1/2 4 1.00 5-1/2 5-1/2 4 1.00 5-1/2 5-1/2 4 1.13 6-3/4 6-3/4
2 8 0.88 5-3/4 5-3/4 8 0.88 5-3/4 5-3/4 8 1.00 7 7
2-1/2 8 1.00 6-1/4 6-1/4 8 1.00 6-1/4 6-1/4 8 1.13 7-3/4 8
3 8 0.88 5-3/4 5-3/4 8 1.13 7 7 8 1.25 8-3/4 9
4 8 1.13 6-3/4 6-3/4 8 1.25 7-3/4 7-3/4 8 1.50 10 10-1/4
5 8 1.25 7-1/2 7-1/2 8 1.50 9-3/4 9-3/4 8 1.75 11-3/4 12-1/4
6 12 1.13 7-1/2 7-3/4 12 1.38 10-1/4 10-1/2 8 2.00 13-1/2 14
8 12 1.38 8-3/4 8-3/4 12 1.63 11-1/2 11-3/4 12 2.00 15 15-1/2
10 16 1.38 9-1/4 9-1/4 12 1.88 13-1/4 13-1/2 12 2.50 19-1/4 20
12 20 1.38 10 10 16 2.00 14-3/4 15-1/4 12 2.75 21-1/4 22
14 20 1.50 10-3/4 11 16 2.25 16 16-3/4
16 20 1.63 11-1/4 11-1/2 16 2.50 17-1/2 18-1/2
18 20 1.88 12-3/4 13-1/4 16 2.75 19-1/2 20-3/4
20 20 2.00 13-3/4 14-1/4 16 3.00 21-1/4 22-1/4
24 20 2.50 17-1/4 18 16 3.50 24-1/4 25-1/2

Contact Us Today For Buy ANSI Class 150 Threaded Flanges, We Reducing Screwed Flange Delivering Everywhere In Mumbai, India.

NPT Flange Dimensions

CLass 150# 300# 600# 900# 1500# 2500#
Daimeter
A
30 38 38 38 38 43
Daimeter
D
90 95 95 120 120 135
Thickness
B
9.6 12.7 14.3 22.3 22.3 30.2
11.2 14.3 20.7 28.7 28.7 36.6
Daimeter
G
35.1 35.1 35.1 35.1 35.1 35.1
Daimeter
K
60.3 66.7 66.7 82.6 82.6 88.9
H 14 21 22 32 32 40
15.6 22.6 28.4 38.4 38.4 46.4
NO.
L
4 4 4 4 4 4
Daimeter
L
15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Daimeter x Length
Daimeter
(in)
1/2 1/2 1/2 3/4 3/4 3/4
Len
mm
55 65 75 110 110 120

Threaded Floor Flange Dimensions


Threaded Floor Flange Dimensions

Threaded Floor (NPS 1/2) Flange


Class 150# 300# 600# 900# 1500# 2500#
Daimeter
A
30 38 38 38 38 43
Daimeter
D
90 95 95 120 120 135
THK
B
9.6 12.7 14.3 22.3 22.3 30.2
11.2 14.3 20.7 28.7 28.7 36.6
Daimeter
G
35.1 35.1 35.1 35.1 35.1 35.1
Daimeter
K
60.3 66.7 66.7 82.6 82.6 88.9
H 14 21 22 32 32 40
15.6 22.6 28.4 38.4 38.4 46.4
Number
L
4 4 4 4 4 4
Daimeter
L
15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Dia. x Length
Daimeter
(in)
1/2 1/2 1/2 3/4 3/4 3/4
Len
mm
55 65 75 110 110 120

Threaded Floor (NPS 3/4) Flange


CL 150# 300# 600# 900# 1500# 2500#
Daimeter
A
38 48 48 44 44 51
Daimeter
D
100 115 115 130 130 140
Thickness
B
11.2 14.3 15.9 25.4 25.4 31.8
12.8 15.9 22.3 31.8 31.8 38.2
Daimeter
G
42.9 42.9 42.9 42.9 42.9 42.9
Daimeter
K
69.9 82.6 82.6 88.9 88.9 95.2
H 14 24 25 35 35 43
15.6 25.6 31.4 41.4 41.4 49.4
Number
L
4 4 4 4 4 4
Daimeter
L
15.9 19.1 19.1 22.2 22.2 22.2
Stud Bolts Dai. x Length
Daimeter
(in)
1/2 5/8 5/8 3/4 3/4 3/4
Len
mm
65 75 90 115 115 125

Threaded Floor (NPS 1) Flange


CL. 150# 300# 600# 900# 1500# 2500#
Daimeter
A
38 48 48 44 44 51
Daimeter
D
100 115 115 130 130 140
Thickness
B
11.2 14.3 15.9 25.4 25.4 31.8
12.8 15.9 22.3 31.8 31.8 38.2
Daimeter
G
42.9 42.9 42.9 42.9 42.9 42.9
Daimeter
K
69.9 82.6 82.6 88.9 88.9 95.2
H 14 24 25 35 35 43
15.6 25.6 31.4 41.4 41.4 49.4
NO.
L
4 4 4 4 4 4
Daimeter
L
15.9 19.1 19.1 22.2 22.2 22.2
Stud Bolts Dia. x Length
Daimeter
(in)
1/2 5/8 5/8 3/4 3/4 3/4
Len
mm
65 75 90 115 115 125

Threaded Floor (NPS 1.1/4) Flange


CL. 150# 300# 600# 900# 1500# 2500#
Daimeter
A
49.2 54 54 52 52 57
Daimeter
D
110 125 125 150 150 160
Thickness
B
12.7 15.9 17.5 28.6 28.6 35
14.3 17.5 23.9 35 35 41.4
Daimeter
G
50.8 50.8 50.8 50.8 50.8 50.8
Daimeter
K
79.4 88.9 88.9 101.6 101.6 108
H 16 25 27 41 41 48
17.6 26.6 33.4 47.4 47.4 54.4
Number
L
4 4 4 4 4 4
Daimeter
L
15.9 19.1 19.1 25.4 25.4 25.4
Stud Bolts Dia. x Length
Daimeter
(in)
1/2 5/8 5/8 7/8 7/8 7/8
Len
mm
65 75 90 125 125 140

DIN 2565 PN6 Threaded Flange Dimensions

DIN 2565 PN6 Threaded Flange

Rated
Diameter
Flange Neck Raised face (RF) Screws Weight In KG
(7,85 Kg/dm3)
d1 Thread D b k h1 d3 d4 f Holes Thread d2 Kg
15 21,3 R 1/2 80 12 55 20 30 40 2 4 M 10 11 0,373
20 26,9 R 3/4 90 14 65 24 40 50 2 4 M 10 11 0,59
25 33,7 R 1 100 14 75 24 50 60 2 4 M 10 11 0,743
32 42,4 R 1 1/4 120 14 90 26 60 70 2 4 M 12 14 1,05
40 48,3 R 1 1/2 130 14 100 26 70 80 3 4 M 12 14 1,2
50 60,3 R 2 140 14 110 28 80 90 3 4 M 12 14 1,37
65 76,1 R 2 1/2 160 14 130 32 100 110 3 4 M 12 14 1,92
80 88,9 R 3 190 16 150 34 110 128 3 4 M 16 18 2,82
100 114,3 R 4 210 16 170 38 130 148 3 4 M 16 18 3,19
125 139,7 R 5 240 18 200 40 160 178 3 8 M 16 18 4,47
150 165,1 R 6 265 18 225 44 185 202 3 8 M 16 18 5,3

DIN 2566 PN16 Threaded Flange Dimensions

DIN 2566 PN16 Threaded Flange

Rated
Diameter
Flange Neck Raised face (RF) Screws/Threaded Weight In Kg
(7,85 Kg/dm3)
d1 Thread D b k h1 d3 d4 f Holes Thread d2 Kg
15 21,3 R 1/2 95 14 65 20 35 45 2 4 M 12 14 0,613
20 26,9 R 3/4 105 16 75 24 45 58 2 4 M 12 14 0,91
25 33,7 R 1 115 16 85 24 52 68 2 4 M 12 14 1,1
32 42,4 R 1 1/4 140 16 100 26 60 78 2 4 M 16 18 1,6
40 48,3 R 1 1/2 150 16 110 26 70 88 3 4 M 16 18 1,78
50 60,3 R 2 165 18 125 28 85 102 3 4 M 16 18 2,43
65 76,1 R 2 1/2 185 18 145 32 105 122 3 4 M 16 18 3,18
80 88,9 R 3 200 20 160 34 118 138 3 8 M 16 18 4,12
100 114,3 R 4 220 20 180 38 140 158 3 8 M 16 18 4,47
125 139,7 R 5 250 22 210 40 168 188 3 8 M 16 18 6,13
150 165,1 R 6 285 22 240 44 195 212 3 8 M 20 22 7,92

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About Company

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Our Official Address

153 / 154, “A” Wing, Siddheshdeep Tower,
Shop No. A-28, Ground Floor, P.B. Marg, Near Navjivan Society,
Mumbai– 400 008 (India).


Telephone & Fax No.

Tel Number : +91 - 22 - 6743 7342,
+91 - 22 - 6659 5135
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