Carbon Steel Flanges
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Kalpataru Piping Solutions is one of the leading carbon steel flanges manufacturers in India, offering a wide range of carbon steel flanges in different types and material grades. Our carbon steel flanges use high-quality materials like carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, molybdenum, and vanadium, depending on the grade. The carbon steel pipe flange prices vary according to the material grade. These flanges come in different dimensions and strengths, with a tensile strength starting at 485MPa and a minimum yield strength of 250MPa.
We also specialize in carbon steel ASTM A105 flanges and carbon steel forged flanges, which are available in different pressure classes like the ANSI B16.5 Class 150, a medium-pressure rating. The sizes of these steel pipe flanges range from ½ inch to 48 inches, with various pressure ratings. For different applications, we offer types like carbon steel blind flanges to close off pipes either permanently through welding or temporarily with bolts and nuts. Our CS flange manufacturers in India also produce steel flanges like the CS lap joint flange, which is known for its unique design.
As carbon steel ASTM A105 flanges manufacturers, we pride ourselves on our flanges’ durability, toughness, and resistance. If you’re looking for reliable carbon steel flange suppliers, feel free to reach out to us for details on carbon steel weld neck flange dimensions, pricing, and more information.
A105 forged carbon steel is widely used today, available in sizes from 1/2″ to 96″ depending on the standard. It handles temperatures up to 1,000°F and pressures between 20 to 6,170 psi, making it ideal for industrial applications and a cost-effective option.
Explore our selection of Carbon Steel products, which includes pipes, tubes, flanges, and fittings, each offering exceptional corrosion resistance.
Carbon steel typically contains up to 2.1% carbon and mainly consists of iron. As the carbon content increases, the steel becomes harder and stronger through heat treatments like quenching and tempering, though it can become less flexible and harder to weld. No minimum amounts of alloying elements like molybdenum, nickel, or chromium are required for A105 steel.
Carbon Steel Slip-On Flanges are hardened through quenching and are commonly used in construction and petrochemical industries, with the outer diameter welded to the pipe. Carbon Steel Weld Neck Flanges have a neck for butt-weld connections and are recommended for harsh conditions.
Flanges connect two pipe ends or close off a pipe, and carbon steel flanges are a common choice due to their corrosion resistance and durability.
Carbon Steel Blind Flanges close pipes, with 0.25% to 0.60% carbon, improving their strength and ductility. Carbon Steel Plate Flanges are welded to pipes for easy connection and work well in low temperatures, often used in fuel and water pipelines.
Check Out Our Related Blog On – Lap Joint Flanges vs Slip On Flanges
Carbon Steel Flange Material Specification :
| Standard | : | ANSI, JIS, DIN, EN1092-1, UNI, BS4504, SABS1123, AS2129, GOST-12820 |
| Sizes | : | 1/8″ NB TO 24″ NB |
| Class | : | 150#, 300#, 400#, 600#, 900#, 1500# & 2500#. |
| Wall Thickness | : | SCH.10, 20, 30, 40, 80, 120, 160, STD, XS, XXS. |
| Material | : | ASTM A105, ASME A105, ASTM A266 GR.1, GR.2, GR.3, GR.4, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 |
| Form | : | Slip-on Flanges – SORF, Weld neck Flanges – WNRF, Socket weld Flanges – SWRF, Blind Flanges – BLRF Lapped joint Flanges, Screwed Flanges, Long weld neck Flanges, Reducing Flanges, Spectacle Flanges, Ring joint Flanges |
Chemical Composition of ASTM A105 Carbon Steel Flanges:
| Carbon Steel Grades | C | Mn | Si | S Max. | P Max. |
| Ck 45 | 0.42/0.50 | 0.50/0.80 | 0.15/0.35 | 0.04 | 0.04 |
| Ck 55 | 0.52/0.60 | 0.60/0.90 | 0.15/0.35 | 0.04 | 0.04 |
| Ck 60 | 0.57/0.65 | 0.60/0.90 | 0.15/0.35 | 0.04 | 0.04 |
| SAE1006 | 0.08 max | 0.25/0.40 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1008 | 0.10 max | 0.30/0.50 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1010 | 0.08/0.13 | 0.30/0.60 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1018 | 0.15/0.20 | 0.60/0.90 | 0.10/0.30 | 0.05 | 0.04 |
| SAE1020 | 0.18/0.23 | 0.30/0.60 | 0.10/0.30 | 0.09 | 0.04 |
| SAE1030 | 0.28/0.34 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1035 | 0.32/0.38 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1040 | 0.37/0.44 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| SAE1045 | 0.40/0.50 | 0.60/0.90 | 0.10/0.40 | 0.05 | 0.04 |
| En-8D | 0.40/0.45 | 0.70/0.90 | 0.05/0.35 | 0.06 | 0.06 |
| En-9 | 0.50/0.60 | 0.50/0.80 | 0.05/0.35 | 0.06 | 0.06 |
ASTM A105 / A105N Carbon Steel Flanges Mechanical Properties:
| Property | Ultimate Tensile Strenght | 0.2% Yield Strenght | Elongation | Reduction of Area | Charpy Impact Toughness | Hardness |
| Value |
70 Min Ksi(485 Mpa) |
36 Min Ksi (250 Mpa) |
30% Min | 22% Min | 30 | 187 HBW MAX |
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) Flange | 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 Pressure Ratings
| Temperature (F°) | 150# | 300# | 400# | 600# | 900# | 1500# | 2500# |
|---|---|---|---|---|---|---|---|
| < 100 | 285 | 740 | 985 | 1480 | 2220 | 3705 | 6170 |
| 200 | 260 | 680 | 905 | 1360 | 2035 | 3395 | 5655 |
| 300 | 230 | 655 | 870 | 1310 | 1965 | 3270 | 5450 |
| 400 | 200 | 635 | 845 | 1265 | 1900 | 3170 | 5280 |
| 500 | 170 | 605 | 805 | 1205 | 1810 | 3015 | 5025 |
| 600 | 140 | 570 | 755 | 1135 | 1705 | 2840 | 4730 |
| 650 | 125 | 550 | 730 | 1100 | 1650 | 2745 | 4575 |
| 700 | 110 | 530 | 710 | 1060 | 1590 | 2655 | 4425 |
| 750 | 95 | 505 | 675 | 1015 | 1520 | 2535 | 4230 |
| 800 | 80 | 410 | 550 | 825 | 1235 | 2055 | 3430 |
| 850 | 65 | 320 | 425 | 640 | 955 | 1595 | 2655 |
| 900 | 50 | 230 | 305 | 460 | 690 | 1150 | 1915 |
| 950 | 35 | 135 | 185 | 275 | 410 | 685 | 1145 |
| 1000 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
| Hydrostatic Test Pressure (psig) | 450 | 1125 | 1500 | 2225 | 3350 | 5575 | 9275 |
Carbon Steel Flange Dimensions
| Nominal Size |
Outside Diameter (OD) |
Bore Diameter (B) |
No. of Bolt Holes |
Bolt Hole Diam. |
Bolt Circle (BC) |
Thickness (T) |
Hub Length (L) |
Hub Diam. (H) |
Lap Radius ( R ) |
Approx. Weight (lbs) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 4.25 | 1.38 | 4 | 0.625 | 3.13 | 0.563 | 0.688 | 1.938 | 0.13 | 2 |
| 1 1/4 | 4.68 | 1.72 | 4 | 0.625 | 3.50 | 0.625 | 0.813 | 2.312 | 0.19 | 3 |
| 1 1/2 | 5.00 | 1.97 | 4 | 0.625 | 3.88 | 0.688 | 0.875 | 2.563 | 0.25 | 3 |
| 2 | 6.00 | 2.46 | 4 | 0.750 | 4.75 | 0.750 | 1.000 | 3.063 | 0.31 | 5 |
| 2 1/2 | 7.00 | 2.97 | 4 | 0.750 | 5.50 | 0.875 | 1.125 | 3.563 | 0.31 | 7 |
| 3 | 7.50 | 3.60 | 4 | 0.750 | 6.00 | 0.938 | 1.188 | 4.250 | 0.38 | 8 |
| 3 1/2 | 8.50 | 4.10 | 8 | 0.750 | 7.00 | 0.938 | 1.250 | 4.812 | 0.38 | 11 |
| 4 | 9.00 | 4.60 | 8 | 0.750 | 7.50 | 0.938 | 1.312 | 5.312 | 0.44 | 13 |
| 5 | 10.00 | 5.69 | 8 | 0.875 | 8.50 | 0.938 | 1.438 | 6.438 | 0.44 | 15 |
| 6 | 11.00 | 6.75 | 8 | 0.875 | 9.50 | 1.000 | 1.562 | 7.562 | 0.50 | 18 |
| 8 | 13.50 | 8.75 | 8 | 0.875 | 11.75 | 1.125 | 1.750 | 9.688 | 0.50 | 30 |
| 10 | 16.00 | 10.92 | 12 | 1.000 | 14.25 | 1.188 | 1.938 | 12.000 | 0.50 | 42 |
| 12 | 19.00 | 12.92 | 12 | 1.000 | 17.00 | 1.250 | 2.188 | 14.375 | 0.50 | 64 |
| 14 | 21.00 | 14.19 | 12 | 1.125 | 18.75 | 1.375 | 2.250 | 15.750 | 0.50 | 90 |
| 16 | 23.50 | 16.19 | 16 | 1.125 | 21.25 | 1.438 | 2.500 | 18.000 | 0.50 | 98 |
| 18 | 25.00 | 18.20 | 16 | 1.250 | 22.75 | 1.562 | 2.688 | 19.875 | 0.50 | 125 |
| 20 | 27.50 | 20.25 | 20 | 1.250 | 25.00 | 1.688 | 2.875 | 22.000 | 0.50 | 160 |
| 24 | 32.00 | 24.25 | 20 | 1.375 | 29.50 | 1.875 | 3.250 | 26.125 | 0.50 | 212 |
| 30** | 38.75 | 30.25 | 28 | 1.375 | 36.00 | 2.125 | 3.500 | 32.750 | 0.50 | 305 |
| 36** | 46.00 | 36.25 | 32 | 1.625 | 42.75 | 2.375 | 3.750 | 39.250 | 0.50 | 440 |
Types Of Carbon Steel Flanges :
| Carbon Steel Flanges | Carbon Steel EN 1092-1 Flanges |
| Carbon Steel BS 4504 Flanges | Carbon Steel A105N Forged Flanges |
| Carbon Steel A105 Flanges | Carbon Steel Slip-on Flanges |
| Carbon Steel Flat Flange Suppliers | ANSI Carbon Steel Blind Flange |
| Carbon Steel A105N Weld Neck Flanges Dealer | Carbon Steel Socket weld Flanges Exporter |
| Carbon Steel Long Weld Neck Flanges Stockholder | CS ASTM A105 Threaded Flanges Distributors |
| Carbon Steel ASTM A105 Reducing Flanges | Carbon Steel Ring Type Joint Flanges Manufacturer |
| Carbon Steel A105 Orifice Flange | ASTM A105 Carbon Steel Spectacle Blind Flanges |
| ASME SA105 Carbon Steel WNRF Flange | Carbon ASTM A105N SORF Flanges |
| ANSI B16.5 Carbon Steel RTJ Flanges | Carbon Steel Screwed Flanges Stockist |
| ASTM A105N Carbon Steel Lap Joint Flanges | ASME SA105 Carbon Steel BLRF Flange |
| Carbon Steel Raised Face Flanges | ASTM A105 Carbon Steel Nipoflange |
| A105 Carbon Steel Square Flanges | ASME SA105N Carbon Steel SWRF Flange |
| Steel Tongue & Groove Flanges | Carbon Steel Male & Female Flanges |
| A105 Carbon Steel DIN Flanges | Carbon Steel ASME B16.5 Flanges |
FAQ
What is the ASME code for carbon steel flanges?
ASME B16. 5 Carbon Steel Flanges
What are Carbon Steel Flanges?
Carbon steel flanges are connectors made from carbon steel. They come in different types and follow common standards like ASTM A694, ASTM A105N (SA105N), MSS SP-44, and DIN 2533. These flanges have pressure ratings that range from class 150 to 2500. Carbon steel contains up to 2.1% carbon by weight, giving it strength and durability
What is A105 Flange Material?
An ASTM A105 flange is made from carbon steel or mild steel. Its material includes carbon, manganese, phosphorus, sulfur, and iron. Viha Steel & Forging is a top manufacturer of A105 carbon steel flanges, producing various grades of these flanges.
Marking & Packing Of Carbon Steel Flanges
Kalpataru Piping Solutions Pack Carbon Steel Flanges Properly And Carefully To Ensure That There Is No Damage To The Carbon Steel Flanges During The Transit. We Pack Carbon Steel Flanges In Wooden Boxes And Supply It All Over The World.
High-Quality Carbon Steel Flanges – Quality Assurance!
Kalpataru Piping Solutions Is One Of The Most Trusted Exporter, Supplier, Stockist & Manufacturer Of Carbon Steel Flanges. Kalpataru Piping Solutions Offers High-Quality Carbon Steel Flanges. We Inspect Our Carbon Steel Flanges At Each Stage Of Production Process To Make Sure That The Quality Of The Carbon Steel Flanges Is Not Compromised. They Are Examined To Confirm Their Standards And We Also Offer Third Party Inspection Of Our Carbon Steel Flanges On Demand Of Our Clients. Kalpataru piping solutions even Offer Test Certificates For Our Carbon Steel Flanges.
We Pack Carbon Steel Flanges Properly And Carefully To Ensure That There Is No Damage To Carbon Steel Flanges During The Transit. We Pack Carbon Steel Flanges In Wooden Boxes And Supply It All Over The World.
Why Choose Kalpataru Piping Solutions For Buying Carbon Steel Flanges?
- Huge Stock Of Carbon Steel Flanges.
- Large Production Capacity Of Carbon Steel Flanges
- Kalpataru Piping Solutions Offer Highest Quality Carbon Steel Flanges At Lowest Price
- We Offer Customised Sizes For Carbon Steel Flanges Depending On Our Clients Requirement
- Kalpataru Piping Solutions Offer High-Quality Carbon Steel Flanges With Test Certificates. We Even Allow Third Party Inspection.
