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Neeka Tubes is a trusted manufacturer of Carbon Steel Flanges globally. They are required for piping systems, with high strength, corrosion resistance and durability. They find extensive usage in different industrial applications and are made from top quality carbon steel. Our flanges provide a leak-proof seal between pipes, valves and other devices.
Carbon Steel Flanges come in many types and sizes to suit the needs of industries. They comply with ASTM A105 / ASME SA105, A105N specifications and follow ANSI/ASME B16.5, B16.47 Series A & B and EN-1092 standards. The standard classifications are ANSI, ASME and BS Flanges, in sizes from 1/2″ to 48″. They come in pressure classes 150# to 2500# and PN6 to PN64 and come in different face types such as Flat Face, Raised Face and Ring Type Joint.
Check Availability of Carbon Steel Flanges , Best Quality CS Blind Flange Manufacturer in India, We stock a range of Carbon Steel Flange Material.
Features of Carbon Steel Flanges
- High Strength & Durability – Provides superior mechanical properties for heavy-duty usage.
- Rust & Corrosion Resistant – Offers protection against corrosion and adverse conditions.
- Easy Installation & Maintenance – Designed for secure fitting and minimal upkeep.
- Temperature & Pressure Tolerance – Performs well under high pressure and extreme temperatures.
- Variety of Designs & Standards – Comes in various sizes, pressure ratings and configurations.
Carbon Steel Flanges are used in industries requiring high-quality and reliable pipe connections. These include oil & gas, chemical processing, petrochemical, power plants, water treatment, construction and shipbuilding. They provide a secure and leak-proof connection in pipelines transporting steam, oil, water, gas and other fluids under high pressure and temperature.
Most Common Types of Carbon Steel Flanges
CS Blind Flange
CS Socket Weld Flange
CS Slip on Flange
CS Weld Neck Flange
CS Threaded Flange
CS Spectacle Blind Flange
CS Ring Type Joint Flange
CS Lap Joint Flanges
CS Forged Flanges
CS Plate Flanges
CS Orifice Flanges
CS Long Weld Neck Flange
Carbon Steel Flanges Specifications
| Specifications | ASTM A105 / ASME SA105, A105N |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | 1/2″ to 48″ |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Flanges Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
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Carbon Steel Flanges Chemical Composition
| Elements | Carbon [C] | Manganese [Mn] | Phosphorus [P] | Sulfur [S] | Silicon [Si] | Copper [Cu] | Nickel [Ni] | Chromium [Cr] | Molybdenum [Mo] | Vanadium [V] |
|---|---|---|---|---|---|---|---|---|---|---|
| Composition, % | ≤0.35 | 0.60-1.05 | ≤0.35 | ≤0.40 | 0.10-0.35 | ≤0.40 | ≤0.40 | ≤0.30 | ≤0.12 | ≤0.08 |
Mechanical Properties of Carbon Steel Flanges
| Tensile Strength min. | Yield Strength min. | Elongation min. | Reduction of Area, min. | Hardness | ||
|---|---|---|---|---|---|---|
| MPa | ksi | MPa | ksi | % | % | HBW |
| 485 | 70 | 250 | 36 | 22 | 30 | 137-187 |
Equivalent Grades For Carbon Steel Flanges
| Standard | ASTM | ASME | DIN | EN | BS | JIS |
|---|---|---|---|---|---|---|
| Carbon Steel | A105 | SA105 | 1.0460 | P250GH | 1503-245 | SF440 |
| Low-Temperature Carbon Steel | A350 LF2 | SA350 LF2 | 1.0508 | P280GH | 1503-241 | SF490 |
| High-Yield Carbon Steel | A694 F52 | SA694 F52 | 1.8983 | S355NL | EN10025-3 | SM490 |
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Please Call on +91 7700067892 or drop an E-Mail : sales@neekatubes.net
Carbon Steel Flanges Dimensions Chart
| Pipe Size | 150 # | 300 # | 600 # | 900 # | 1500 # | 2500 # | ||||||||||||
| WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | |
| 1/2″ | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | SEE 1500 # WEIGHTS | 5 | 4 | 4 | 7 | 7 | 7 | ||
| 3/4″ | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 3 | SEE 1500 # WEIGHTS | 6 | 5 | 6 | 8 | 8 | 8 | ||
| 1″ | 3 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | SEE 1500 # WEIGHTS | 9 | 8 | 8 | 12 | 11 | 11 | ||
| 1 1/2″ | 4 | 3 | 3 | 7 | 6 | 6 | 8 | 7 | 8 | SEE 1500 # WEIGHTS | 13 | 12 | 13 | 25 | 22 | 23 | ||
| 2″ | 6 | 5 | 5 | 9 | 7 | 8 | 12 | 9 | 10 | SEE 1500 # WEIGHTS | 25 | 25 | 25 | 42 | 37 | 39 | ||
| 2 1/2″ | 8 | 7 | 7 | 12 | 10 | 12 | 18 | 13 | 15 | SEE 1500 # WEIGHTS | 36 | 36 | 35 | 52 | 55 | 56 | ||
| 3″ | 10 | 8 | 9 | 15 | 13 | 16 | 23 | 16 | 20 | 31 | 26 | 29 | 48 | 48 | 48 | 94 | 83 | 86 |
| 4″ | 15 | 13 | 17 | 25 | 22 | 27 | 42 | 37 | 41 | 53 | 53 | 54 | 73 | 73 | 73 | 145 | 125 | 130 |
| 5″ | 19 | 15 | 20 | 32 | 28 | 35 | 68 | 63 | 68 | 86 | 83 | 87 | 130 | 130 | 140 | 245 | 210 | 225 |
| 6″ | 24 | 19 | 26 | 42 | 39 | 50 | 81 | 80 | 86 | 110 | 110 | 115 | 165 | 165 | 160 | 380 | 325 | 345 |
| 8″ | 39 | 30 | 45 | 67 | 58 | 81 | 120 | 115 | 140 | 175 | 170 | 200 | 275 | 260 | 300 | 580 | 485 | 530 |
| 10″ | 52 | 43 | 70 | 91 | 81 | 124 | 190 | 170 | 230 | 260 | 245 | 290 | 455 | 435 | 510 | 1075 | 930 | 1025 |
| 12″ | 80 | 64 | 110 | 140 | 115 | 185 | 225 | 200 | 295 | 325 | 325 | 415 | 690 | 580 | 690 | 1525 | 1100 | 1300 |
| 14″ | 110 | 90 | 140 | 180 | 165 | 250 | 280 | 230 | 355 | 400 | 400 | 520 | 940 | NA | 975 | NA | NA | NA |
| 16″ | 140 | 98 | 180 | 250 | 190 | 295 | 390 | 330 | 495 | 495 | 425 | 600 | 1250 | NA | 1300 | NA | NA | NA |
| 18″ | 150 | 130 | 220 | 320 | 250 | 395 | 475 | 400 | 630 | 680 | 600 | 850 | 1625 | NA | 1750 | NA | NA | NA |
| 20″ | 180 | 165 | 285 | 400 | 315 | 505 | 590 | 510 | 810 | 830 | 730 | 1075 | 2050 | NA | 2225 | NA | NA | NA |
| 22″ | 225 | 185 | 355 | 465 | 370 | 640 | 720 | 590 | 1000 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 24″ | 260 | 220 | 430 | 580 | 475 | 790 | 830 | 730 | 1250 | 1500 | 1400 | 2025 | 3325 | NA | 3625 | NA | NA | NA |
Carbon Steel Flanges Weight Chart
| Standard | Class | Diameter | Bolt Circle Diameter | Number of Bolts | Bolt Size | Diameter of Bolt Hole |
|---|---|---|---|---|---|---|
| AS4087 | PN14 | 95 | 67 | 4 | M12 | 14 |
| AS 2129 Flanges | Table C | 95 | 67 | 4 | 13 | 14 |
| Table D | 95 | 67 | 4 | 13 | 14 | |
| Table E | 95 | 67 | 4 | 13 | 14 | |
| Table F | 95 | 67 | 4 | 13 | 14 | |
| Table H | 114 | 83 | 4 | 16 | 17 | |
| Table J | 114 | 83 | 4 | 16 | 17 | |
| ANSI B16.5 | ANSI 150 | 89 | 60 | 4 | 13 | 16 |
| ANSI 300 | 95 | 67 | 4 | 13 | 16 | |
| ANSI 600 | 95 | 67 | 4 | 13 | 16 | |
| ANSI 900 | 121 | 83 | 4 | 19 | 22 | |
| ANSI 1500 | 121 | 83 | 4 | 19 | 22 | |
| ISO 7005 (DIN) Flanges | PN6 | 80 | 55 | 4 | M10 | 11 |
| PN10 | 95 | 65 | 4 | M12 | 14 | |
| PN16 | 95 | 65 | 4 | M12 | 14 | |
| PN20 | 90 | 60.5 | 4 | M14 | 16 | |
| PN25 | 95 | 65 | 4 | M12 | 14 | |
| PN40 | 95 | 65 | 4 | M12 | 14 |
Carbon Steel Flanges Packing & Marking
Packaging & Marking Details
We make sure that Carbon Steel Flanges are packaged and delivered safely. They are packed into wooden crates, on pallets or wrapped in bubble wrap for safety in transit. Each flange is marked with its size, grade, standard, pressure rating and heat number to ensure identification. Our fast and secure global shipping guarantees timely delivery to clients.
Quality Tests
Strict quality tests are done to ensure high standards for Carbon Steel Flanges, which include chemical composition analysis, mechanical testing, hardness testing, hydrostatic tests, and PMI testing. We provide superior quality and reliability with Mill Test Certificates, EN 10204/3.1B certification and third party inspection reports.
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Industrial Application of Carbon Steel Flanges
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