Stainless Steel
Forged and plate flanges for corrosive process service.
Product Overview
Flanges Stockist and Supplier
Our flange range covers weld neck, slip on, blind, socket weld, screwed, reducing, lap joint, ring type joint, spectacle, orifice, long weld neck and deck flanges for pipelines and process plants.
Flanges are supplied in stainless steel, carbon steel, alloy steel, nickel alloys and copper alloys, from 1/8" NB up to 48" NB in pressure classes from 150# to 2500#.
- Sizes from 1/8" NB to 48" NB
- Class 150# to 2500#
- All common flange types and facings
- Third party inspection on request
Size1/8" to 48" NB
Class150# to 2500#
StainlessASTM A182, A240
Carbon SteelASTM A105, A181
Flanges Specifications
- Stainless Steel
- ASTM A182, A240
- Carbon Steel
- ASTM A105, A181
- Alloy Steel
- ASTM A182 Gr F1, F5, F9, F11, F22, F91
- Nickel Alloys
- Monel 400 and K500, Inconel 600 and 625, Incoloy 800 and 825, Hastelloy, Alloy 904L
- Copper Alloys
- Aluminium, Copper, Brass and Gunmetal
- Types
- Weld Neck, Slip On, Blind, Socket Weld, Screwed, Reducing, Lap Joint, Ring Type Joint, Spectacle, Orifice, Long Weld Neck, Deck Flange
- Size
- 1/8" NB to 48" NB
- Class
- 150#, 300#, 400#, 600#, 900#, 1500# and 2500#
- Dimensional Standard
- ASME B16.5 up to 24" NB
Flanges Grades
Stainless Steel
- F 304
- F 304L
- F 304H
- F 316
- F 316L
- F 316Ti
- F 310
- F 310S
- F 321
- F 321H
- F 317
- F 347
- F 347H
Carbon Steel
- A105
- A181 Cl 60
- A181 Cl 70
Alloy Steel
- F1
- F5
- F9
- F11
- F22
- F91
Nickel Alloys
- Monel 400
- Monel K500
- Inconel 600
- Inconel 625
- Incoloy 800
- Incoloy 825
- Hastelloy
- Alloy 904L
Materials
Carbon Steel
General pressure piping flanges for ambient and elevated temperature.
Alloy Steel
Chrome-moly flanges for high temperature, high pressure service.
Nickel Alloys
Monel, Inconel, Incoloy and Hastelloy for severe chemical service.
Copper Alloys
Aluminium, copper, brass and gunmetal flanges for marine and water lines.
Chemical Composition
Swipe to see all columns
| Grade | C | Mn | P | S | Si | Cr | Ni | Mo | Others |
|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel, ASTM A182 | |||||||||
| F 304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0 - 20.0 | 8.0 - 11.0 | - | - |
| F 304L | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0 - 20.0 | 8.0 - 13.0 | - | - |
| F 316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0 - 18.0 | 10.0 - 14.0 | 2.0 - 3.0 | - |
| F 316L | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0 - 18.0 | 10.0 - 15.0 | 2.0 - 3.0 | - |
| F 321 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0 - 19.0 | 9.0 - 12.0 | - | Ti 5 x (C + N) min, 0.70 max |
| F 347 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0 - 20.0 | 9.0 - 13.0 | - | Nb 10 x C min, 1.10 max |
| Carbon Steel | |||||||||
| A105 | 0.35 | 0.60 - 1.05 | 0.035 | 0.040 | 0.10 - 0.35 | 0.30 | 0.40 | 0.12 | Cu 0.40, V 0.08 |
| A181 | 0.35 | 1.10 | 0.050 | 0.050 | 0.10 - 0.35 | - | - | - | - |
| Alloy Steel, ASTM A182 | |||||||||
| F5 | 0.15 | 0.30 - 0.60 | 0.030 | 0.030 | 0.50 | 4.00 - 6.00 | 0.50 | 0.44 - 0.65 | - |
| F9 | 0.15 | 0.30 - 0.60 | 0.030 | 0.030 | 0.50 - 1.00 | 8.00 - 10.00 | - | 0.90 - 1.10 | - |
| F11 | 0.10 - 0.20 | 0.30 - 0.80 | 0.040 | 0.040 | 0.50 - 1.00 | 1.00 - 1.50 | - | 0.44 - 0.65 | - |
| F22 | 0.05 - 0.15 | 0.30 - 0.60 | 0.040 | 0.040 | 0.50 | 2.00 - 2.50 | - | 0.87 - 1.13 | - |
| F91 | 0.08 - 0.12 | 0.30 - 0.60 | 0.020 | 0.010 | 0.20 - 0.50 | 8.00 - 9.50 | 0.40 | 0.85 - 1.05 | V 0.18 - 0.25, Nb 0.06 - 0.10, N 0.03 - 0.07 |
Values are for reference, as per the relevant standard. Percentages are maximum unless a range or minimum is shown. Actual values are stated on the mill test certificate.
Mechanical Properties
Swipe to see all columns
| Grade | Tensile (MPa, min) | Yield (MPa, min) | Elongation (%, min) | Reduction of Area (%, min) | Hardness (HB) |
|---|---|---|---|---|---|
| Stainless Steel, ASTM A182 | |||||
| F 304 | 515 | 205 | 30 | 50 | - |
| F 304L | 485 | 170 | 30 | 50 | - |
| F 316 | 515 | 205 | 30 | 50 | - |
| F 316L | 485 | 170 | 30 | 50 | - |
| F 321 | 515 | 205 | 30 | 50 | - |
| F 347 | 515 | 205 | 30 | 50 | - |
| Carbon Steel | |||||
| A105 | 485 | 250 | 22 | 30 | 137 - 187 |
| A181 Cl 60 | 415 | 205 | 22 | 35 | - |
| A181 Cl 70 | 485 | 250 | 18 | 24 | - |
| Alloy Steel, ASTM A182 | |||||
| F5 | 485 | 275 | 20 | 35 | 143 - 217 |
| F9 | 585 | 380 | 20 | 40 | 179 - 217 |
| F11 Cl 2 | 485 | 275 | 20 | 30 | 143 - 207 |
| F22 Cl 3 | 515 | 310 | 20 | 30 | 156 - 207 |
| F91 | 585 | 415 | 20 | 40 | 190 - 248 |
Dimension Chart
Class 150 Flange Dimensions (mm), ASME B16.5
Swipe to see all columns
| NPS (in) | Flange OD | Thickness | Bolt Circle | No. of Bolts | Bolt Size (in) |
|---|---|---|---|---|---|
| 1/2 | 90 | 9.6 | 60.3 | 4 | 1/2 |
| 3/4 | 100 | 11.2 | 69.9 | 4 | 1/2 |
| 1 | 110 | 12.7 | 79.4 | 4 | 1/2 |
| 1 1/4 | 115 | 14.3 | 88.9 | 4 | 1/2 |
| 1 1/2 | 125 | 15.9 | 98.4 | 4 | 1/2 |
| 2 | 150 | 17.5 | 120.7 | 4 | 5/8 |
| 2 1/2 | 180 | 20.7 | 139.7 | 4 | 5/8 |
| 3 | 190 | 22.3 | 152.4 | 4 | 5/8 |
| 3 1/2 | 215 | 22.3 | 177.8 | 8 | 5/8 |
| 4 | 230 | 22.3 | 190.5 | 8 | 5/8 |
| 5 | 255 | 22.3 | 215.9 | 8 | 3/4 |
| 6 | 280 | 23.9 | 241.3 | 8 | 3/4 |
| 8 | 345 | 27.0 | 298.5 | 8 | 3/4 |
| 10 | 405 | 28.6 | 362.0 | 12 | 7/8 |
| 12 | 485 | 30.2 | 431.8 | 12 | 7/8 |
| 14 | 535 | 33.4 | 476.3 | 12 | 1 |
| 16 | 595 | 35.0 | 539.8 | 16 | 1 |
| 18 | 635 | 38.1 | 577.9 | 16 | 1 1/8 |
| 20 | 700 | 41.3 | 635.0 | 20 | 1 1/8 |
| 24 | 815 | 46.1 | 749.3 | 20 | 1 1/4 |
Class 300 Flange Dimensions (mm), ASME B16.5
Swipe to see all columns
| NPS (in) | Flange OD | Thickness | Bolt Circle | No. of Bolts | Bolt Size (in) |
|---|---|---|---|---|---|
| 1/2 | 95 | 12.7 | 66.7 | 4 | 1/2 |
| 3/4 | 115 | 14.3 | 82.6 | 4 | 5/8 |
| 1 | 125 | 15.9 | 88.9 | 4 | 5/8 |
| 1 1/4 | 135 | 17.5 | 98.4 | 4 | 5/8 |
| 1 1/2 | 155 | 19.1 | 114.3 | 4 | 3/4 |
| 2 | 165 | 20.7 | 127.0 | 8 | 5/8 |
| 2 1/2 | 190 | 23.9 | 149.2 | 8 | 3/4 |
| 3 | 210 | 27.0 | 168.3 | 8 | 3/4 |
| 3 1/2 | 230 | 28.6 | 184.2 | 8 | 3/4 |
| 4 | 255 | 30.2 | 200.0 | 8 | 3/4 |
| 5 | 280 | 33.4 | 235.0 | 8 | 3/4 |
| 6 | 320 | 35.0 | 269.9 | 12 | 3/4 |
| 8 | 380 | 39.7 | 330.2 | 12 | 7/8 |
| 10 | 445 | 46.1 | 387.4 | 16 | 1 |
| 12 | 520 | 49.3 | 450.8 | 16 | 1 1/8 |
| 14 | 585 | 52.4 | 514.4 | 20 | 1 1/8 |
| 16 | 650 | 55.6 | 571.5 | 20 | 1 1/4 |
| 18 | 710 | 58.8 | 628.6 | 24 | 1 1/4 |
| 20 | 775 | 62.0 | 685.8 | 24 | 1 1/4 |
| 24 | 915 | 68.3 | 812.8 | 24 | 1 1/2 |
Thickness excludes the 1.6 mm raised face. Dimensions for higher classes are available on request.
Applications
Oil & Gas
Pipeline and process connections in refineries and terminals.
Chemical Processing
Corrosion resistant flanged joints in chemical plants.
Power Plants
High pressure steam and turbine auxiliary lines.
Water Treatment
Pump station and treatment plant connections.
MEP & HVAC
Valve and equipment connections in building services.
Data Centers
Chilled water plant and pump connections.
Ready to Discuss Your Project?
Get in touch with us today for premium industrial piping & metal solutions.