Marzouk Steel, located in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of Carbon Steel A105 flanges. They pride themselves on delivering products that adhere to strict international quality and performance standards. Thanks to their advanced manufacturing capabilities and rigorous quality control processes, Marzouk Steel guarantees high dimensional accuracy, strength, and reliability in every flange they produce. They cater to a diverse array of industries, supplying dependable piping components for both local and global markets. With their technical know-how and dedication to customer satisfaction, Marzouk Steel stands out as a trustworthy source for ASTM A105 carbon steel flanges.
Carbon Steel A105 flanges are constructed of forged carbon steel with iron, carbon (0.35% max), manganese (0.60-1.05%), phosphorus (0.035% max), and sulfur (0.040% max) composition. They possess superior mechanical properties, such as tensile strength of 70,000 psi (min) and yield strength of 36,000 psi (min), with good hardness and impact resistance. Benefits are that they have good durability, economical, weld easily, and suitable for high pressure and high-temperature use in industries such as power generation, petrochemicals, and oil & gas.
| Specs | ASTM A105/ ASME SA105 |
|---|---|
| Pressure Classes | Cl 150, Class 300, Cl. 400, 600, Class 900, Cl 1500 and 2500 |
| Standards | ASME | BS | DIN | ANSI | GOST | EN Flange |
| Size Ranges | From 1/2 inch (i.e. 15 NB) upto 48 inch (i.e. 1200NB) |
| Flange Face Type | FF, RF, LMF, SMF, RTJ, LJF. |
| JIS Standards | 5 K, 10K, 16K, 20 K, 30K, 40K, 63 K |
| UNI/ DIN / EN Standard | 6Bar, 10 Bar, 16Bar, 25 Bar, 40Bar |
| Elements | Composition, % |
| Carbon [C] | ≤0.35 |
| Manganese [Mn] | 0.60-1.05 |
| Phosphorus [P] | ≤0.35 |
| Sulfur [S] | ≤0.40 |
| Silicon [Si] | 0.10-0.35 |
| Copper [Cu] | ≤0.40 |
| Nickel [Ni] | ≤0.40 |
| Chromium [Cr] | ≤0.30 |
| Molybdenum [Mo] | ≤0.12 |
| Vanadium [V] | ≤0.08 |
| 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 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Carbon Steel A105 is a forged carbon steel material known for its carefully controlled chemical composition, which mainly includes carbon, manganese, silicon, and minimal amounts of sulfur and phosphorus. This specific makeup gives it remarkable strength, toughness, and the ability to withstand pressure and temperature fluctuations. In terms of mechanics, A105 flanges boast impressive yield and tensile strength, high impact resistance, and excellent machinability. They also offer good weldability when the right procedures are followed, making them ideal for high-pressure piping systems and critical service applications.
| ASTM A105 Flange Weights by Pressure Class and Size | ||||||||||||||||||
| Pipe Size | Class 150 | Class 300 | Class 600 | Class 900 | Class 1500 | Class 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 | 1500 Class Weight | 5 | 4 | 4 | 7 | 7 | 7 | ||
| 3/4″ | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 3 | 1500 Class Weight | 6 | 5 | 6 | 8 | 8 | 8 | ||
| 1″ | 3 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | 1500 Class Weight | 9 | 8 | 8 | 12 | 11 | 11 | ||
| 1 1/2″ | 4 | 3 | 3 | 7 | 6 | 6 | 8 | 7 | 8 | 1500 Class Weight | 13 | 12 | 13 | 25 | 22 | 23 | ||
| 2″ | 6 | 5 | 5 | 9 | 7 | 8 | 12 | 9 | 10 | 1500 Class Weight | 25 | 25 | 25 | 42 | 37 | 39 | ||
| 2 1/2″ | 8 | 7 | 7 | 12 | 10 | 12 | 18 | 13 | 15 | 1500 Class Weight | 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 |
| Size in inches | Outer Dia. | Size in millimeter | RF Height | Flange Thick. | RF Diam. | PCD | Bolt Size UNC | No of Bolts | Machine Bolt Lengths | Hole Size | RF Stud Length | ISO Stud Size | Weight in kg |
| Â | A | Â | D | B | C | E | Â | Â | Â | Â | Â | Â | Â |
| 1/2 | 90 | 15 | 2 | 9.6 | 34.9 | 60.3 | 1/2 | 4 | 50 | 5/8 | 55 | M14 | 0.9 |
| 3/4 | 100 | 20 | 2 | 11.2 | 42.9 | 69.9 | 1/2 | 4 | 50 | 5/8 | 65 | M14 | 0.9 |
| 1 | 110 | 25 | 2 | 12.7 | 50.8 | 79.4 | 1/2 | 4 | 55 | 5/8 | 65 | M14 | 0.9 |
| 1 1/4 | 115 | 32 | 2 | 14.3 | 63.5 | 88.9 | 1/2 | 4 | 55 | 5/8 | 70 | M14 | 1.4 |
| 1 1/2 | 125 | 40 | 2 | 15.9 | 73 | 98.4 | 1/2 | 4 | 65 | 5/8 | 70 | M14 | 1.8 |
| 2 | 150 | 50 | 2 | 17.5 | 92.1 | 120.7 | 5/8 | 4 | 70 | 3/4 | 85 | M16 | 2.3 |
| 2 1/2 | 180 | 65 | 2 | 20.7 | 104.8 | 139.7 | 5/8 | 4 | 75 | 3/4 | 90 | M16 | 3.2 |
| 3 | 190 | 80 | 2 | 22.3 | 127 | 152.4 | 5/8 | 4 | 75 | 3/4 | 90 | M16 | 4.1 |
| 3 1/2 | 215 | 90 | 2 | 22.3 | 139.7 | 177.8 | 5/8 | 8 | 75 | 3/4 | 90 | M16 | 5.9 |
| 4 | 230 | 100 | 2 | 22.3 | 157.2 | 190.5 | 5/8 | 8 | 75 | 3/4 | 90 | M16 | 7.7 |
| 5 | 255 | 125 | 2 | 22.3 | 185.7 | 215.9 | 3/4 | 8 | 85 | 7/8 | 95 | M20 | 9.1 |
| 6 | 280 | 150 | 2 | 23.9 | 215.9 | 241.3 | 3/4 | 8 | 85 | 7/8 | 100 | M20 | 11.8 |
| 8 | 345 | 200 | 2 | 27 | 269.9 | 298.5 | 3/4 | 8 | 90 | 7/8 | 110 | M20 | 20.5 |
| 10 | 405 | 250 | 2 | 28.6 | 323.8 | 362 | 7/8 | 12 | 100 | 1 | 115 | M24 | 32 |
| 12 | 485 | 300 | 2 | 30.2 | 381 | 431.8 | 7/8 | 12 | 100 | 1 | 120 | M24 | 50 |
| 14 | 535 | 350 | 2 | 33.4 | 412.8 | 476.3 | 1 | 12 | 115 | 1 1/8 | 135 | M27 | 64 |
| 16 | 595 | 400 | 2 | 35 | 469.9 | 539.8 | 1 | 16 | 115 | 1 1/8 | 135 | M27 | 82 |
| 18 | 635 | 450 | 2 | 38.1 | 533.4 | 577.9 | 1 1/8 | 16 | 125 | 1 1/4 | 145 | M30 | 100 |
| 20 | 700 | 500 | 2 | 41.3 | 584.2 | 635 | 1 1/8 | 20 | 140 | 1 1/4 | 160 | M30 | 130 |
| 24 | 815 | 600 | 2 | 46.1 | 692.2 | 749.3 | 1 1/4 | 20 | 150 | 1 3/8 | 170 | M33 | 196 |
These Carbon Steel A105 flanges find extensive use in industries such as oil and gas, petrochemical, power generation, and refining, where strength and reliability are paramount. They’re commonly found in piping systems, valves, pressure vessels, and fittings designed to handle high pressure and elevated temperatures. Additionally, these flanges are utilized in chemical processing plants, offshore installations, and industrial pipelines. The blend of mechanical strength, durability, and adherence to international standards makes Carbon Steel A105 flanges a top choice for demanding industrial settings.
Marzouk Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Tunis, Tunisia.
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