API 6A Type 6B Flange
Refer API 6B 5000 PSI Pressure Rating And ISO Approved API 6B Flanges Manufacturer In India.

Api 6a Type 6b Flange

Api 6b Flange

Api 6a 6b And 6bx Flanges
Table Of Contents
- API 6a Type 6B Flange Premium Standard Raw Materials?
- What Is API 6a Type 6B Flange?
- What Main Purpose Of API 6a 6B Flange?
- API 6a Type 6B Specifications Chart
- API 6B 2000 Flange Dimensions
- API 6B 3000 Flange Dimensions
- API 6A Type 6B 5000 PSI Flange Dimensions
- API 6a 6B Equivalent Length Of Flanges
- API 6B Flanges Bolting Length
- API 6a Type 6B Flange Torque Table
- API Type 6B Flange Tolerance Formula
- API 6B blind Flanges Thickness Calculation For Pressure Vessel
- API 6a 6B And 6bx Flanges Mechanical Properties
- API 6B Flange Standard Gasket Size Chart
- We Are Supplying Types Of API 6a Type 6b Flange In India

API 6a Type 6B Flange Premium Standard Raw Materials?
Apart from joining pipes to form a piping system; one of the benefits of using the API 6A Type 6B Flange produced at our factory is that they are robust and are very durable. At Rajtilak Metal, all components manufactured by us such as the API 6A Type 6B Slip On Flange are from premium standard raw materials. Therefore the performance of this API 6B Flange Standard is top notch and is considered to be high cost performance by all our clients across the world. Further, these flanges are able to provide easy access for cleaning, inspection as well as for modification.
What Is API 6a Type 6B Flange?
The slip on raised carbon steel API 6A Type 6B Flange or SORF, is typically produced with the inner diameter of the flange being slightly bigger in comparison to the outside diameter of the pipe. The API 6A Type 6B Flange could also be a ring or a plate, which would form a rim at the end of a pipe, when the flange has been fastened to the pipe. Often referred to as a raised type of flange, the gasket of the API 6A Type 6B Flange slip on raised one has been raised above the bolting circle face.
What Main Purpose Of API 6a 6B Flange?
The main purpose of the API 6a 6B Flange is the distribution of the heaviness or load on the smaller gasket area. Additionally, the slip on raised CS API 6A Type 6B Flange aids in up surging the repression competence of this joint. Besides having the Api 6a Type 6b Flange in various tolerances, grades, size , specification and thickness in stock, we also manufacture these api 6a type 6b flange dimensions as per the details or customizations as required by our clients.

API 6b Weld Neck Flange Standard Specification And Check Difference Between API 6a And 6b Blind Flanges.
API 6a Type 6B Specifications Chart
Material Specification Of : | API 6a Type 6b Flange |
---|---|
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) |
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 |
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 |
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 |
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 |
API 6bx And 6b Welding Neck Flanges Dimensions with Tolerances And API 6bx And 6b Blind Flanges Maximum Weight.
API 6B 2000 Flange And API 6B 3000 Flange Dimensions

API 6A Type 6B 5000 PSI Flange Dimensions

Normal Pipe Sizes | Daimeter Of Flanges | Daimeter Of RTJ | Hight Of Flanges | Flanges Bolting | Flanges Hub | RING | ||||||||
Normal Pipe Sizes | Outside Daimeter | C | K | P | T | Q | LN | BC | N | H | X | HL | JL | R / RX |
2-1/16″ | 215 | 3 | 124 | 95.25 | 46.1 | 38.1 | 109.5 | 165.10 | 8 | 26 | 104.8 | 60.3 | 43.7 | 24 |
2-9/16″ | 245 | 3 | 137 | 107.95 | 49.3 | 41.3 | 112.7 | 190.50 | 8 | 29 | 123.8 | 73.0 | 54.9 | 27 |
3-1/8″ | 265 | 3 | 168 | 136.53 | 55.6 | 47.7 | 125.4 | 203.20 | 8 | 32 | 133.3 | 88.9 | 67.5 | 35 |
4-1/16″ | 310 | 3 | 194 | 161.93 | 62.0 | 54.0 | 131.8 | 241.30 | 8 | 35 | 161.9 | 114.3 | 88.1 | 39 |
5-1/8″ | 375 | 3 | 229 | 193.68 | 81.0 | 73.1 | 163.5 | 292.10 | 8 | 42 | 196.8 | 141.3 | 110.3 | 44 |
7-1/16″ | 395 | 6 | 248 | 211.15 | 92.1 | 82.6 | 181.0 | 317.50 | 12 | 39 | 228.6 | 168.3 | 132.6 | 46 |
9″ | 485 | 6 | 318 | 269.88 | 103.2 | 92.1 | 223.8 | 393.70 | 12 | 45 | 292.1 | 219.1 | 173.8 | 50 |
11″ | 585 | 6 | 371 | 323.85 | 119.1 | 108.0 | 265.1 | 482.60 | 12 | 51 | 368.3 | 273.1 | 216.7 | 54 |
API 6a 6B Equivalent Length Of Flanges
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 6bx Target Flanges Thickness Chart And API 6bx And 6b Test Flanges Bolt Size Chart In Millimeter.
API 6B Flanges Bolting Length

API 6a Type 6B Flange Torque Table

API Type 6B Flange Tolerance Formula
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 6b Flange Dimensions And We Are API 6a 6b and 6bx flanges Supplier In India.
API 6B blind Flanges Thickness Calculation For Pressure Vessel
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 |
API 6a 6B And 6bx Flanges Mechanical Properties
Test Pressure | 3 000 PSI | 4 500 PSI | 7 500 PSI | 15 000 PSI | 22 500 PSI | 30 000 PSI |
---|---|---|---|---|---|---|
Maximum Pressure (Working) | 2,000 PSI | 3,000 PSI | 5,000 PSI | 10,000 PSI | 15,000 PSI | 20,000 PSI |
Temperature Rating | K (-60 Deg C) TO Y (+345 Deg C) | K (-60 Deg C) To Y (+345 Deg C) | K (-60 Deg C) To Y (+345 Deg C) | K (-60 Deg C) To Y (+345 Deg C) | K (-60 Deg C) To Y (+345 Deg C) | K (-60 Deg C) To Y (+345 Deg C) |
Product Specification Levels | 1, 2, 3 & 4 | 1, 2, 3 & 4 | 1, 2, 3 & 4 | 1, 2, 3 & 4 | 1, 2, 3 & 4 | 1, 2, 3 & 4 |
API 6B Flange Standard Gasket Size Chart
NPS | Gasket I.D. |
Gasket O.D. | ||||
---|---|---|---|---|---|---|
Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | ||
1/2 | 0.84 | 1.875 | 2.125 | 2.125 | 2.125 | 2.50 |
3/4 | 1.06 | 2.25 | 2.625 | 2.625 | 2.625 | 2.75 |
1 | 1.31 | 2.625 | 2.875 | 2.875 | 2.875 | 3.125 |
1 1/4 | 1.66 | 3 | 3.25 | 3.25 | 3.25 | 3.50 |
1 1/2 | 1.91 | 3.375 | 3.75 | 3.75 | 3.75 | 3.875 |
2 | 2.38 | 4.125 | 4.375 | 4.375 | 4.375 | 5.625 |
2 1/2 | 2.88 | 4.875 | 5.125 | 5.125 | 5.125 | 6.50 |
3 | 3.50 | 5.375 | 5.875 | 5.875 | 5.875 | 6.625 |
4 | 4.50 | 6.875 | 7.125 | 7.00 | 7.625 | 8.125 |
5 | 5.56 | 7.75 | 8.50 | 8.375 | 9.50 | 9.75 |
6 | 6.62 | 8.75 | 9.875 | 9.75 | 10.50 | 11.375 |
8 | 8.62 | 11 | 12.125 | 12.00 | 12.625 | 14.125 |
10 | 10.75 | 13.375 | 14.25 | 14.125 | 15.75 | 17.125 |
12 | 12.75 | 16.125 | 16.625 | 16.50 | 18.00 | 19.625 |
We Are Supplying Types Of API 6a Type 6b Flange In India

Api 6a Type 6b CS Lap Joint Flange

Api 6a Type 6b Steel Forged Flanges

Api 6a Type 6b Standard Flange

Api Spec 6a Type 6b Plate Flanges

Api 6a Types 6b Iso 10423 Flange

Api 6a Types 6b Iso 10423 Puddle Flanges

Api 6a Types 6b Iso 10423

Api 6a Types 6b Slip On Flanges

Api 6a Types 6b carbon steel Socket Weld Flanges

Api 6a Types 6b Blind Flanges

Carbon Steel Api 6a Type 6b Weld Neck Flanges

CS Api 6a Types 6b Threaded Flanges
No Matter Where The Location, Recently We Have Successfully Supplied API 6a Type 6b Flange To The Following Countires
API 6B 5000 PSI | United Kingdom -UK, Malaysia, Europe, UAE |
Api 6a Type 6b CS Lap Joint Flange | Dammam -KSA, Belgium, Philippines, Indonesia. |
API 6B Flanges | Qatar, Thailand, Europe, France. |
API 6a Type 6b Flange | Malaysia, Thailand, Germany, Czechia |
Api 6a Type 6b Standard Flange | Finland, Bangladesh, Malaysia, USA |
Api 6a Types 6b Iso 10423 | Saudi Arabia (KSA), Kuwait, South Africa, Brazil |
Api 6a Types 6b Slip On Flanges | South Africa, Bahrain, Singapore, Singapore |
Api 6a Types 6b Iso 10423 Flange | Philippines, UK, Australia, Nigeria |
Api 6a Type 6b Steel Forged Flanges | Oman, UAE, Hong Kong, Malaysia |
Carbon Steel Api 6a Type 6b Weld Neck Flanges | Chile, Singapore, Iran, Italy |
Api 6a Types 6b Blind Flanges | United Arab Emirates (UAE), Norway, Turkey, Malaysia |
Api 6a Types 6b carbon steel Socket Weld Flanges | Netherlands, Russia, Malaysia, Dubai |