Carbon Steel A105 Flanges
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Thabiso Steel, a reputable manufacturer and supplier located in Cape Town, South Africa, specializes in high-quality **Carbon Steel A105 Flanges** designed for durability, strength, and reliable performance in high-pressure and high-temperature settings. These flanges are crafted to meet international standards, ensuring precision, consistency, and long-lasting operational efficiency. Thabiso Steel caters to various industries, including oil and gas, petrochemical, power generation, and construction, delivering products that blend structural integrity with corrosion resistance. With a strong commitment to quality and customer satisfaction, Thabiso Steel has positioned itself as a top supplier of carbon steel flanges, offering dependable solutions for essential piping and industrial systems.
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ASTM A105 Carbon Steel RTJ Flanges
Carbon Steel A105 Forged Flanges
Carbon Steel A105 Flat Face Flanges
Table of Contents
What is Carbon Steel A105 Flanges?
**Carbon Steel A105 Flanges** are mainly made up of carbon, manganese, phosphorus, sulfur, and silicon, along with controlled alloying elements that boost their mechanical performance. They showcase impressive tensile and yield strength, exceptional hardness, and high impact resistance. These flanges also provide good ductility, weldability, and toughness, ensuring they perform reliably under high-pressure and high-temperature conditions. These mechanical attributes make A105 flanges perfect for piping systems, pressure vessels, and structural applications that demand durability, strength, and consistent performance in challenging industrial environments.
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Carbon Steel A105 Flanges Specification
| 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 |
Carbon Steel A105 Flanges Chemical Composition
| 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 |
Carbon Steel A105 Flanges Mechanical Properties
| 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 |
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Pipes, Sheet, Fittings and Flanges
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Top Manufacturer and Supplier of Carbon Steel A105 Flanges in Cape Town, South Africa
ThabisoSteel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel A105 Flanges in Cape Town, South Africa. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.
ANSI A105 Flanges Pressure Rating
| 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 |
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Types of Carbon Steel A105 Flanges
ASTM A105 Flange Weight Chart
| 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 |
| A | D | B | C | E | |||||||||
| 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 |
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Uses of Carbon Steel A105 Flanges
**Carbon Steel A105 Flanges** are extensively used in industries that require secure and robust piping connections. They’re commonly found in oil and gas pipelines, refineries, chemical plants, power generation facilities, and steam distribution systems. Additionally, they play a vital role in boiler assemblies, heat exchangers, and petrochemical installations where safety and operational reliability are paramount. Their blend of mechanical strength, corrosion resistance, and precise dimensions guarantees long-term performance, making them an excellent choice for connecting pipes, valves, and equipment in high-pressure applications.
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