API 6A 6BX Flanges
Refer API 6a Type 6bx Flange Dimensions And Standard Specification Of API 6a 6bx Blind Flange.

API 6a 6bx Flanges

API 6a Type 6bx Flanges

API 6a 6bx Blind Flange
Table Of Contents
- How Many Yield Strength Requires In API 6A 6bx Flanges?
- API 6A 6bx Blind Flange Is Inserted Between Two Open Flange?
- API 6A Type 6bx Flanges Use In Water Treatment Plant?
- API 6A 6bx Blind Flange Specifications List
- API 6a Type 6bx Flange Dimensions
- API 6A 6bx 10000 Psi Flanges Dimensions
- API 6A 6bx 2000 PSI Flanges Dimensions
- API 6A 6bx 3000 PSI Flanges Dimensions
- API 6A 6bx 5000 PSI Flanges Dimensions
- API 6A 6BX 15000 PSI Flanges Dimensions
- API 6a Type 6bx Flange Weight
- API 6a Type 6bx Flanges Equivalent Chart
- API 6a 6b And 6bx Flanges Bolt Size Chart In MM
- API 6A 6bx Weld Neck Flange Torque Values
- API 6a 6bx Flange Tolerance Table
- API 6a 6bx Flange Thickness Calculation
- We Keep Bulk Stock Types Of API 6A 6BX Flange

How Many Yield Strength Requires In API 6A 6bx Flanges?
The specification API 6A 6BX Flange requires a low alloy such as carbon steel with the 60K yield strength material for a maximum service pressure of 10,000 psi for API6A. On the other hand, the api 6bx Threaded Flange or the 6BX weld neck flanges would require a 75K yield strength material for a maximum service pressure which ranges between 15,000 psi to about 20,000 psi. All API Specified carbon steel api 6bx Weld Neck Flange needs to meet the standard for integral flanges. Further, the specified weld neck api 6a type 6bx flange dimensions satisfy the minimum stress allowable at the point of weld attachment in the piping system. Operators, who generally work with such kind of piping systems must choose tubulars with the minimum properties either equalling to or exceeding that of the connecting the weld neck or the api 6bx CS Lap Joint Flange.
API 6A 6bx Blind Flange Is Inserted Between Two Open Flange?
API 6a 6bx blind flange is inserted between two open flanges to block off the flow of liquid in a pipeline. Often a api 6a type 6bx Blind Flange is inserted into a pipeline during repairs further up the line. These slip on api 6a type 6bx 10000 psi can be connected to the pipe on welding the fillet at the top and bottom of the flange.
API 6A Type 6bx Flanges Use In Water Treatment Plant?
As typical of API 6A 6BX Slip On Flange, we manufacture these components with the inside diameter being slightly bigger as compared to the pipe's outside diameter. At Rajtilak Metal, we manufacture as well as supply these api 6a 6b and 6bx flanges to various industries. Our customer base takes into account clients from industries which use the API 6A 6BX carbon steel Socket Weld Flange such as refineries, oil & Gas, Water treatment plant, chemical & petrochemical, power plants, ship building, off-shore, EPC & other Engineering companies.

Check API 6a Type 6bx Flange Weight And API 6a Type 6bx 10000 Psi Pressure Rating Chart.
API 6A 6bx Blind Flange Specifications List
Material Specification Of : | API 6A 6BX Flanges |
---|---|
Special Types Of Flanges : | Nipoflange, Elboflange, Latroflange, Swivel Flange, Expanding Flange, Reducing Flange, 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 |
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" |
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) |
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) |
Surface Finish | smooth, concentric serrated, stock |
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 |
Biggest API 6a Type 6bx Flange Manufacturer In India And API 6a 6bx Weld Neck Flange Dimensions Chart According to ASME B16.5.
API 6a Type 6bx Flange Dimensions

API 6A 6bx 10000 Psi Flanges Dimensions

NPS | B | Outside Daimeter | C | E1 | Q | G | K | T | J1 | J2 | J3 | J4 | R | BC | N | H | BX |
1 13/16″ | 46.8 | 185 | 3 | – | 5.56 | 77.77 | 105 | 42.1 | 88.9 | 65.1 | 48.5 | – | 10 | 146.1 | 8 | 23 | 151 |
2 1/16″ | 53.2 | 200 | 3 | – | 5.95 | 86.23 | 111 | 44.1 | 100 | 74.7 | 51.6 | – | 10 | 158.8 | 8 | 23 | 152 |
2 9/16″ | 65.9 | 230 | 3 | – | 6.75 | 102.77 | 132 | 51.2 | 120.7 | 92.1 | 57.2 | – | 10 | 184.2 | 8 | 26 | 153 |
3 1/16″ | 78.6 | 270 | 3 | – | 7.54 | 119 | 152 | 58.4 | 142.1 | 110.2 | 63.5 | – | 10 | 215.9 | 8 | 29 | 154 |
4 1/16″ | 104 | 315 | 3 | – | 8.33 | 150.62 | 185 | 70.3 | 182.6 | 146.1 | 73.1 | – | 10 | 258.8 | 8 | 32 | 155 |
5 1/8″ | 131 | 360 | 3 | 9.5 | 9.53 | 176.66 | 221 | 79.4 | 223.8 | 182.6 | 81 | 6.4 | 10 | 300 | 12 | 32 | 169 |
7 1/16″ | 180.2 | 480 | 6 | 11.1 | 11.11 | 241.83 | 302 | 103.2 | 301.6 | 254 | 95.3 | 9.7 | 16 | 403.2 | 12 | 42 | 156 |
9 “ | 229.4 | 550 | 6 | 12.7 | 12.7 | 299.06 | 359 | 123.9 | 374.7 | 327.1 | 93.7 | 9.7 | 16 | 476.3 | 16 | 42 | 157 |
11″ | 280.2 | 655 | 6 | 14.3 | 14.29 | 357.23 | 429 | 141.3 | 450.9 | 400.1 | 103.2 | 14.2 | 16 | 565.2 | 16 | 48 | 158 |
13 5/8″ | 346.9 | 770 | 6 | 15.9 | 15.88 | 432.64 | 518 | 168.3 | 552.5 | 495.3 | 114.3 | 17.5 | 16 | 673.1 | 20 | 51 | 159 |
16 3/4″ | 426.2 | 870 | 6 | 8.3 | 8.33 | 478.33 | 576 | 168.3 | 655.6 | 601.7 | 76.2 | 30.2 | 19 | 776.3 | 24 | 51 | 162 |
18 3/4″ | 477 | 1040 | 6 | 18.3 | 18.26 | 577.9 | 697 | 223.1 | 752.5 | 674.7 | 155.6 | 25.4 | 16 | 925.5 | 24 | 61 | 164 |
21 1/4″ | 540.5 | 1145 | 6 | 19.1 | 19.05 | 647.88 | 781 | 241.3 | 847.7 | 762 | 165.1 | 31.8 | 21 | 1022.4 | 24 | 67 | 166 |
API 6A 6bx 2000 PSI Flanges Dimensions

NPS | B | Outside Daimeter | C | K | P | E | T | Q | X | BC | N | H | LN | HL | JL | R/RX |
2 1/16″ | 53.2 | 165 | 3 | 108 | 82.55 | 7.9 | 33.4 | 25.4 | 84 | 127 | 8 | 20 | 81 | 60.3 | 53.3 | 23 |
2 9/16″ | 65.9 | 190 | 3 | 127 | 101.6 | 7.9 | 36.6 | 28.6 | 100 | 149.2 | 8 | 23 | 88 | 73 | 63.5 | 26 |
3 1/8″ | 81.8 | 210 | 3 | 146 | 123.83 | 7.9 | 39.7 | 31.8 | 117 | 168.3 | 8 | 23 | 91 | 88.9 | 78.7 | 31 |
4 1/16″ | 108.7 | 275 | 3 | 175 | 149.23 | 7.9 | 46.1 | 38.1 | 152 | 215.9 | 8 | 26 | 110 | 114.3 | 103.1 | 37 |
5 1/8″ | 131 | 330 | 3 | 210 | 180.98 | 7.9 | 52.4 | 44.5 | 189 | 266.7 | 8 | 29 | 122 | 141.3 | 122.9 | 41 |
7 1/16″ | 181.8 | 355 | 6 | 241 | 211.15 | 7.9 | 55.6 | 47.6 | 222 | 292.1 | 12 | 29 | 126 | 168.3 | 147.1 | 45 |
9″ | 229.4 | 420 | 6 | 302 | 269.88 | 7.9 | 63.5 | 55.6 | 273 | 349.3 | 12 | 32 | 141 | 219.1 | 199.1 | 49 |
11″ | 280.2 | 510 | 6 | 356 | 323.85 | 7.9 | 71.5 | 63.5 | 343 | 431.8 | 16 | 35 | 160 | 273 | 248.4 | 53 |
13 5/8″ | 346.9 | 560 | 6 | 413 | 381 | 7.9 | 74.7 | 66.7 | 400 | 489 | 20 | 35 | – | – | – | 57 |
16 3/4″ | 426.2 | 685 | 6 | 508 | 469.9 | 7.9 | 84.2 | 76.2 | 495 | 603.2 | 20 | 42 | – | – | – | 65 |
21 1/4″ | 540.5 | 815 | 6 | 635 | 584.2 | 9.7 | 98.5 | 88.9 | 610 | 723.9 | 24 | 45 | – | – | – | 73 |
API 6A 6bx 3000 PSI Flanges Dimensions

NPS | B | Outside Daimeter | C | K | P | E | T | Q | X | BC | N | H | LN | HL | JL | R/RX |
2 1/16″ | 53.2 | 215 | 3 | 124 | 95.25 | 7.9 | 46.1 | 38.1 | 104.8 | 165.1 | 8 | 26 | 109.6 | 60.3 | 50 | 24 |
2 9/16″ | 65.9 | 245 | 3 | 137 | 107.95 | 7.9 | 49.3 | 41.3 | 123.8 | 190.5 | 8 | 29 | 112.7 | 73 | 59.7 | 27 |
3 1/8″ | 81.8 | 240 | 3 | 156 | 123.83 | 7.9 | 46.1 | 38.1 | 127 | 190.5 | 8 | 26 | 109.5 | 88.9 | 74.4 | 31 |
4 1/16″ | 108.7 | 290 | 3 | 181 | 149.23 | 7.9 | 52.4 | 44.4 | 158.8 | 235 | 8 | 32 | 122.2 | 114.3 | 98 | 37 |
5 1/8″ | 131 | 350 | 3 | 216 | 180.98 | 7.9 | 58.8 | 50.8 | 190.5 | 279.4 | 8 | 35 | 134.9 | 141.3 | 122.9 | 41 |
7 1/16″ | 181.8 | 380 | 6 | 241 | 211.15 | 7.9 | 63.5 | 55.6 | 235 | 317.5 | 12 | 32 | 147.6 | 168.3 | 147.1 | 45 |
9″ | 229.4 | 470 | 6 | 308 | 269.88 | 7.9 | 71.5 | 63.5 | 298.5 | 393.7 | 12 | 39 | 169.9 | 219.1 | 189.7 | 49 |
11″ | 280.2 | 545 | 6 | 362 | 323.85 | 7.9 | 77.8 | 69.9 | 368.3 | 469.9 | 16 | 39 | 192.1 | 273 | 237.2 | 53 |
13 5/8″ | 346.9 | 610 | 6 | 419 | 381 | 7.9 | 87.4 | 79.4 | 419.1 | 533.4 | 20 | 39 | – | – | – | 57 |
16 3/4″ | 426.2 | 705 | 6 | 524 | 469.9 | 11.2 | 100.1 | 88.9 | 508 | 616 | 20 | 45 | – | – | – | 66 |
20 3/4″ | 527.8 | 855 | 6 | 648 | 584.2 | 12.7 | 120.7 | 108 | 622.3 | 749.3 | 20 | 54 | – | – | – | 74 |
API 6A 6bx 5000 PSI Flanges Dimensions

NPS | B | Outside Daimeter | C | K | P | E | T | Q | X | BC | N | H | LN | HL | JL | R/RX |
2 1/16″ | 53.2 | 215 | 3 | 124 | 95.25 | 7.9 | 46.1 | 38.1 | 104.8 | 165.1 | 8 | 26 | 109.5 | 60.3 | 43.7 | 24 |
2 9/16″ | 65.9 | 245 | 3 | 137 | 107.95 | 7.9 | 49.3 | 41.3 | 123.8 | 190.5 | 8 | 29 | 112.7 | 73 | 54.9 | 27 |
3 1/8″ | 81.8 | 265 | 3 | 168 | 136.53 | 7.9 | 55.6 | 47.7 | 133.3 | 203.2 | 8 | 32 | 125.4 | 88.9 | 67.5 | 35 |
4 1/16″ | 108.7 | 310 | 3 | 194 | 161.93 | 7.9 | 62 | 54 | 161.9 | 241.3 | 8 | 35 | 131.8 | 114.3 | 88.1 | 39 |
5 1/8″ | 131 | 375 | 3 | 229 | 193.68 | 7.9 | 81 | 73.1 | 196.8 | 292.1 | 8 | 42 | 163.5 | 141.3 | 110.3 | 44 |
7 1/16″ | 181.8 | 395 | 6 | 248 | 211.15 | 9.7 | 92.1 | 82.6 | 228.6 | 317.5 | 12 | 39 | 181 | 168.3 | 132.6 | 46 |
9″ | 229.4 | 485 | 6 | 318 | 269.88 | 11.2 | 103.2 | 92.1 | 292.1 | 393.7 | 12 | 45 | 223.8 | 219.1 | 173.8 | 50 |
11″ | 280.2 | 585 | 6 | 371 | 323.85 | 11.2 | 119.1 | 108 | 368.3 | 482.6 | 12 | 51 | 265.1 | 273.1 | 216.7 | 54 |
API 6A 6BX 15000 PSI Flanges Dimensions

NPS | B | Outside Daimeter | C | E1 | Q | G | K | T | J1 | J2 | J3 | J4 | R | BC | N | H | Ring Number |
1 13/16″ | 46.8 | 210 | 3 | – | 5.56 | 77.77 | 106 | 45.3 | 97.6 | 71.4 | 47.6 | – | 10 | 160.3 | 8 | 26 | 151 |
2 1/16″ | 53.2 | 220 | 3 | – | 5.95 | 86.23 | 114 | 50.8 | 111.1 | 82.5 | 54 | – | 10 | 174.6 | 8 | 26 | 152 |
2 9/16″ | 65.9 | 255 | 3 | – | 6.75 | 102.77 | 133 | 57.2 | 128.6 | 100 | 57.1 | – | 10 | 200 | 8 | 29 | 153 |
3 1/16″ | 78.6 | 290 | 3 | – | 7.54 | 119 | 154 | 64.3 | 154 | 122.2 | 63.5 | – | 10 | 230.2 | 8 | 32 | 154 |
4 1/16″ | 104 | 360 | 3 | – | 8.33 | 150.62 | 194 | 78.6 | 195.3 | 158.7 | 73 | – | 10 | 290.5 | 8 | 39 | 155 |
5 1/8″ | 131 | 420 | 3 | 9.5 | 9.53 | 176.66 | 225 | 98.5 | 244.5 | 200 | 81.8 | 6.4 | 16 | 342.9 | 12 | 42 | 169 |
7 1/16″ | 180.2 | 505 | 6 | 11.1 | 11.11 | 241.83 | 305 | 119.1 | 325.4 | 276.2 | 92.1 | 7.9 | 16 | 428.6 | 16 | 42 | 156 |
9 “ | 229.4 | 650 | 6 | 12.7 | 12.7 | 299.06 | 381 | 146.1 | 431.8 | 349.2 | 123.8 | 14.2 | 16 | 552.4 | 16 | 51 | 157 |
11″ | 280.2 | 815 | 6 | 14.3 | 14.29 | 357.23 | 454 | 187.4 | 584.2 | 427 | 235.7 | 12.7 | 16 | 711.2 | 20 | 54 | 158 |
13 5/8″ | 346.9 | 885 | 6 | 15.9 | 15.88 | 432.64 | 541 | 204.8 | 595.3 | 528.6 | 114.3 | 17.5 | 25 | 771.5 | 20 | 61 | 159 |
18 3/4″ | 477 | 1160 | 6 | 18.3 | 18.26 | 577.9 | 722 | 255.6 | 812.8 | 730.2 | 155.6 | 35.1 | 25 | 1016 | 20 | 80 | 164 |
API 6a 6b And 6bx Flanges Weight Chart Table And API 6a 6bx Slip On Flanges Thickness Calculation For Pressure Vessel.
API 6a Type 6bx Flange Weight
Normal Pipe Size Of Flange | Working Pressure For Flanges (PSI) | Outside Diameter (O.D>) | Bolt Holes Number | Bolt Holes Diameter | Bolts Length | Ring Gasket For API |
---|---|---|---|---|---|---|
1-13/16" | 10,000 | 7-3/8" | 8 | 3/4" | 5-1/4" | -151 |
1-13/16" | 15,000 | 8-3/16" | 8 | 7/8" | 6" | -151 |
1-13/16" | 20,000 | 10-1/8" | 8 | 1" | 7-3/4" | -151 |
2-1/16" | 2,000 | 6-1/2" | 8 | 5/8" | 5/8" | R-23 |
2-1/16" | 3,000/5,000 | 8-1/2" | 8 | 7/8" | 7/8" | R-24 |
2-1/16" | 10,000 | 7-7/8" | 8 | 3/4" | 3/4" | -152 |
2-1/16" | 15,000 | 8-3/4" | 8 | 7/8" | 7/8" | -152 |
2-1/16" | 20,000 | 11-5/16" | 8 | 1-1/8" | 1-1/8" | -152 |
2-9/16" | 2,000 | 7-1/2" | 8 | 3/4" | 5-1/4" | R-26 |
2-9/16" | 3,000/5,000 | 9-5/8" | 8 | 1" | 7" | R-27 |
2-9/16" | 10,000 | 9-1/8" | 8 | 7/8" | 6-1/4" | -153 |
2-9/16" | 15,000 | 10" | 8 | 1" | 7" | -153 |
2-9/16" | 20,000 | 12-13/16" | 8 | 1-1/4" | 9-1/2" | -153 |
3-1/8" | 2,000 | 8-1/4" | 8 | 3/4" | 5-1/2" | R-31 |
3-1/8" | 3,000 | 9-1/2" | 8 | 7/8" | 6-1/4" | R-31 |
3-1/8" | 5,000 | 10-1/2" | 8 | 1-1/8" | 7-3/4" | R-35 |
3-1/16" | 10,000 | 10-5/8" | 8 | 1" | 7-1/4" | -154 |
3-1/16" | 15,000 | 11-5/16" | 8 | 1-1/8" | 8" | -154 |
3-1/16" | 20,000 | 14-1/16" | 8 | 1-3/8" | 10-3/4" | -154 |
4-1/16" | 2,000 | 10-3/4" | 8 | 7/8" | 6-1/4" | R-37 |
4-1/16" | 3,000 | 11-1/2" | 8 | 1-1/8" | 7-1/2" | R-37 |
4-1/16" | 5,000 | 12-1/4" | 8 | 1-1/8" | 8-3/8" | -155 |
4-1/16" | 20,000 | 17-9/16" | 8 | 1-3/4" | 12-3/4" | -155 |
5-1/8" | 5,000 | 14-3/4" | 8 | 1-1/2" | 10-3/4" | R-44 |
7-1/16" | 2,000 | 14" | 12 | 1" | 7-1/2" | R-45 |
7-1/16" | 3,000 | 15" | 12 | 1-1/8" | 8-1/2" | R-45 |
7-1/16" | 5,000 | 15-1/2" | 12 | 1-3/8" | 11-1/4" | R-46 |
7-1/16" | 10,000 | 18-7/8" | 12 | 1-1/2" | 11-3/4" | -156 |
7-1/16" | 15,000 | 19-7/8" | 16 | 1-1/2" | 13" | -156 |
7-1/16" | 20,000 | 24-13/16" | 16 | 2" | 17-3/4" | -156 |
9" | 2,000 | 16-1/2" | 12 | 1-1/8" | 8-1/2" | R-49 |
9" | 3,000 | 18-1/2" | 12 | 1-3/8" | 9-1/2" | R-49 |
9" | 5,000" | 19" | 12 | 1-5/8" | 12-1/2" | R-50 |
9" | 10,000 | 21-3/4" | 16 | 1-1/2" | 13-1/4" | -157 |
9" | 15,000 | 25-1/2" | 16 | 1-7/8" | 16" | -157 |
11" | 2,000 | 20" | 16 | 1-1/4" | 9-1/4" | R-53 |
11" | 3,000 | 21-1/2" | 16 | 1-3/8" | 10" | R-53 |
11" | 5,000 | 23" | 12 | 1-7/8" | 14-1/4" | R-54 |
11" | 10,000 | 25-3/4" | 16 | 1-3/4" | 15-3/8" | -158 |
11" | 15,000 | 32" | 20 | 2" | 19-1/2" | -158 |
13-5/8" | 2,000 | 22" | 20 | 1-1/4" | 9-1/2" | R-57 |
13-5/8" | 3,000 | 24" | 20 | 1-3/8" | 10-3/4" | R-57 |
13-5/8" | 5,000 | 26-1/2" | 16 | 1-5/8" | 12-3/4" | -160 |
13-5/8" | 10,000 | 30-1/4" | 20 | 1-7/8" | 17-3/4" | -159 |
13-5/8" | 15,000 | 34-7/8" | 20 | 2-1/4" | 21" | -159 |
16-3/4" | 2,000 | 27" | 20 | 1-1/2" | 10-3/4" | R-65 |
16-3/4" | 3,000 | 27-3/4" | 20 | 1-5/8" | 12-1/4" | R-66 |
16-3/4" | 5,000 | 30-3/8" | 16 | 1-78" | 14-3/4" | -162 |
16-3/4" | 10,000 | 34-5/16" | 24 | 1-7/8" | 17-3/4" | -162 |
18-3/4" | 5,000 | 35-5/8" | 20 | 2" | 18" | -163 |
16-3/4" | 10,000 | 40-15/16" | 24 | 2-1/4" | 23" | -164 |
20-3/4" | 3,000 | 33-3/4" | 20 | 2" | 15-1/4" | R-74 |
21-1/4" | 2,000 | 32" | 24 | 1-5/8" | 12-1/2" | R-73 |
21-1/4" | 5,000 | 39" | 24 | 2" | 19" | -165 |
21-1/4" | 10,000 | 45" | 24 | 2-1/2" | 24-3/4" | -166 |
26-3/4" | 2,000 | 41" | 20 | 1-3/4" | 14-1/4" | -167 |
21-1/4" | 3,000 | 43-3/8" | 24 | 2" | 17-1/2" | -168 |
View API 6A Type 6BX 10000 psi Flange Dimensions And API 6a Type 6bx Bolt Pattern And Gasket Chart.
API 6a Type 6bx Flanges Equivalent Chart
Weld Neck, Integral, Blinds, Equivalent | |||
Maximam Working Pressure |
2000 PSI |
3000 PSI |
5000 PSI |
Test Pressure | PSI 3000 | PSI 4500 | PSI 7500 |
Product Spec Levels |
1, 2, 3 and 4 | 1, 2, 3 and 4 | 1, 2, 3 and 4 |
API Temperature Rating |
K (-60 ° C) to Y (+345 ° C) |
K (-60 ° C) to Y (+345 ° C) |
K (-60 ° C) to Y (+345 ° C) |
Integral, BLRF, Target BLRF and Test Flanges | |||
Minimam Yield | 60 000 PSI | 60 000 PSI | 60 000 PSI |
Minimam Tensile | 85 000 PSI | 85 000 PSI | 85 000 PSI |
Material | API 60K | API 60K | API 60K |
API 6a 6b And 6bx Flanges Bolt Size Chart In MM

API 6A 6bx Weld Neck Flange Torque Values

API 6a 6bx Flange Tolerance Table
Nominal Size Of Bore | Bore (Maximam) | Outside Diameter (O.D.) | Dimensional Tolerance | Maximam Chamfer |
B | D | D | C | |
2000 PSI | ||||
26¾ | 26.78 | 41 | ± 0.12 | 0.25 |
30 | 30.03 | 44.19 | ± 0.12 | 0.25 |
3000 PSI | ||||
26¾ | 26.78 | 43.38 | ± 0.12 | 0.25 |
30 | 30.03 | 46.68 | ± 0.12 | 0.25 |
5000 PSI | ||||
13.3/8 | 13.66 | 26.5 | ± 0.12 | 0.25 |
16¾ | 16.78 | 30.38 | ± 0.12 | 0.25 |
18¾ | 18.78 | 35.62 | ± 0.12 | 0.25 |
21¾ | 21.28 | 39 | ± 0.12 | 0.25 |
10000 PSI | ||||
1.13/16 | 1.84 | 7.38 | ± 0.06 | 0.12 |
2.1/16 | 2.09 | 7.88 | ± 0.06 | 0.12 |
2.9/16 | 2.59 | 9.12 | ± 0.06 | 0.12 |
3.1/16 | 3.09 | 10.62 | ± 0.06 | 0.12 |
4.1/16 | 4.09 | 12.44 | ± 0.06 | 0.12 |
5.1/8 | 5.16 | 14.06 | ± 0.06 | 0.12 |
7.1/16 | 7.09 | 18.88 | ± 0.12 | 0.25 |
9 | 9.03 | 21.75 | ± 0.12 | 0.25 |
11 | 11.03 | 25.75 | ± 0.12 | 0.25 |
13.5/8 | 13.66 | 30.25 | ± 0.12 | 0.25 |
16¾ | 16.78 | 34.31 | ± 0.12 | 0.25 |
18¾ | 18.78 | 40.94 | ± 0.12 | 0.25 |
21¼ | 21.28 | 45 | ± 0.12 | 0.25 |
15000 PSI | ||||
1.13/16 | 1.84 | 8.19 | ± 0.06 | 0.12 |
2.1/16 | 2.09 | 8.75 | ± 0.06 | 0.12 |
2.9/16 | 2.59 | 10 | ± 0.06 | 0.12 |
3.1/16 | 3.09 | 11.31 | ± 0.06 | 0.12 |
4.1/16 | 4.09 | 14.19 | ± 0.06 | 0.12 |
5.1/8 | 5.16 | 16.5 | ± 0.06 | 0.12 |
7.1/16 | 7.09 | 19.88 | ± 0.12 | 0.25 |
9 | 9.03 | 25.5 | ± 0.12 | 0.25 |
11 | 11.03 | 32 | ± 0.12 | 0.25 |
13.5/8 | 13.66 | 34.88 | ± 0.12 | 0.25 |
18¾ | 18.78 | 45.75 | ± 0.12 | 0.25 |
20000 PSI | ||||
1.13/16 | 1.84 | 10.12 | ± 0.06 | 0.12 |
2.1/16 | 2.09 | 11.31 | ± 0.06 | 0.12 |
2.9/16 | 2.59 | 12.81 | ± 0.06 | 0.12 |
3.1/16 | 3.09 | 14.06 | ± 0.06 | 0.12 |
4.1/16 | 4.09 | 17.56 | ± 0.06 | 0.12 |
7.1/16 | 7.09 | 25.81 | ± 0.12 | 0.25 |
9 | 9.03 | 31.69 | ± 0.12 | 0.25 |
11 | 11.03 | 34.75 | ± 0.12 | 0.25 |
13.5/8 | 13.66 | 45.75 | ± 0.12 | 0.25 |
Nominal Size and Bore |
Dia Raised Face |
Total THK |
Large Dia Hub |
Small Dia Hub |
F | T | A | E | |
2000 PSI | ||||
26¾ | 31.69 | 4.97 | 32.91 | 29.25 |
30 | 35.75 | 5.28 | 36.69 | 32.8 |
3000 PSI | ||||
26¾ | 32.75 | 6.34 | 34.25 | 30.56 |
30 | 36.31 | 6.58 | 38.19 | 34.3 |
5000 PSI | ||||
13.3/8 | 18 | 4.44 | 18.94 | 16.69 |
16¾ | 21.06 | 5.13 | 21.88 | 20.75 |
18¾ | 24.69 | 6.53 | 26.56 | 23.56 |
21¾ | 27.62 | 7.12 | 29.88 | 26.75 |
10000 PSI | ||||
1.13/16 | 4.12 | 1.66 | 3.5 | 2.56 |
2.1/16 | 4.38 | 1.73 | 3.94 | 2.94 |
2.9/16 | 5.19 | 2.02 | 4.75 | 3.62 |
3.1/16 | 6 | 2.3 | 5.59 | 4.34 |
4.1/16 | 7.28 | 2.77 | 7.19 | 5.75 |
5.1/8 | 8.69 | 3.12 | 8.81 | 7.19 |
7.1/16 | 11.88 | 4.06 | 11.88 | 10 |
9 | 14.12 | 4.88 | 14.75 | 12.88 |
11 | 16.88 | 5.56 | 17.75 | 15.75 |
13.5/8 | 20.38 | 6.62 | 21.75 | 19.5 |
16¾ | 22.69 | 6.62 | 25.81 | 23.69 |
18¾ | 27.44 | 8.78 | 29.62 | 26.56 |
21¼ | 30.75 | 9.5 | 33.38 | 30 |
15000 PSI | ||||
1.13/16 | 4.19 | 1.78 | 3.84 | 2.81 |
2.1/16 | 4.5 | 2 | 4.38 | 3.25 |
2.9/16 | 5.25 | 2.25 | 5.06 | 3.94 |
3.1/16 | 6.06 | 2.53 | 6.06 | 4.81 |
4.1/16 | 7.62 | 3.09 | 7.69 | 6.25 |
5.1/8 | 8.88 | 3.88 | 9.62 | 7.88 |
7.1/16 | 12 | 4.6 | 12.81 | 10.88 |
9 | 15 | 5.75 | 17 | 13.75 |
11 | 17.88 | 7.38 | 23 | 16.81 |
13.5/8 | 21.31 | 8.06 | 23.44 | 20.81 |
18¾ | 28.44 | 10.06 | 32 | 28.75 |
20000 PSI | ||||
1.13/16 | 4.62 | 2.5 | 5.25 | 4.31 |
2.1/16 | 5.19 | 2.81 | 6.06 | 5 |
2.9/16 | 5.94 | 3.12 | 6.81 | 5.69 |
3.1/16 | 6.75 | 3.38 | 7.56 | 6.31 |
4.1/16 | 8.62 | 4.19 | 9.56 | 8.12 |
7.1/16 | 13.88 | 6.5 | 15.19 | 13.31 |
9 | 17.38 | 8.06 | 18.94 | 16.88 |
11 | 19.88 | 8.81 | 22.31 | 20 |
13.5/8 | 24.19 | 11.5 | 27.31 | 24.75 |
API 6a 6bx Flange Thickness Calculation
NPS (Normal Pipe Size) | "A" (O.D.) Outside Daimeter |
"B" (Thick.) |
"C" (RF Daimeter) |
"D" (B.C.D.) |
# Bolt Holes |
Diameter of Bolt Holes |
Apprx. Weight In KG |
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 |
We Keep Bulk Stock Types Of API 6A 6BX Flange

API 6A 6BX Slip On Flange

API 6A 6BX carbon steel Socket Weld Flange

Api 6a Type 6bx Blind Flange

Carbon Steel Api 6bx Weld Neck Flange

CS Api 6bx Threaded Flange

Api 6bx CS Lap Joint Flange

Api 6bx Steel Forged Flanges

Api 6bx Standard Flange

Api Spec 6bx Plate Flanges

Api 6bx Iso 10423 Flange

Api Spec 6bx Iso 10423 Puddle Flange

Api 6bx Iso 10423 Flanges
Some Of The Major Locations We Have Supplied API 6A 6BX Flanges:
API 6A 6BX Flanges | United Kingdom -UK, Malaysia, Europe, UAE |
API 6a Type 6bx Flange | Dammam -KSA, Belgium, Philippines, Indonesia. |
API 6a 6bx Blind Flange | Qatar, Thailand, Europe, France. |
API 6a Type 6bx Flange | Malaysia, Thailand, Germany, Czechia |
API 6a Type 6bx 10000 Psi | Finland, Bangladesh, Malaysia, USA |
API 6A 6BX carbon steel Socket Weld Flange | Saudi Arabia (KSA), Kuwait, South Africa, Brazil |
API 6A 6BX Slip On Flange | South Africa, Bahrain, Singapore, Singapore |
Carbon Steel Api 6bx Weld Neck Flange | Philippines, UK, Australia, Nigeria |
Api 6bx Standard Flange | Oman, UAE, Hong Kong, Malaysia |
Api 6bx Iso 10423 Flange | Chile, Singapore, Iran, Italy |
Api Spec 6bx Iso 10423 Puddle Flange | United Arab Emirates (UAE), Norway, Turkey, Malaysia |
Api 6bx Threaded Flange | Netherlands, Russia, Malaysia, Dubai |
API 6a 6b And 6bx Flanges | Egypt, UK, Mexico, Spain |