Ismail Flanges, a well-known manufacturer and supplier located in Jakarta, Indonesia, focuses on crafting top-notch Mild Steel Flanges for a variety of industries. Renowned for their precision engineering and commitment to global standards, Ismail Flanges provides cost-effective and durable solutions for piping systems. Their Mild Steel Flanges are made from high-quality mild steel, ensuring excellent machinability, weldability, and moderate strength. Catering to sectors like water treatment, HVAC, petrochemical, and construction, Ismail Flanges guarantees reliable performance, timely delivery, and competitive pricing for customers both in Indonesia and around the globe.
The Mild Steel Flanges produced by Ismail Flanges are crafted from low-carbon steel, which contains about 0.05–0.25% carbon, along with trace amounts of manganese, silicon, and other elements. This specific composition grants them outstanding ductility, toughness, and ease of welding. Their mechanical properties feature a tensile strength ranging from 400–550 MPa, a minimum yield strength of 250 MPa, and an elongation of approximately 20%. These flanges are designed for moderate-pressure and temperature applications, making them perfect for general use. Their excellent machinability ensures precise fitting and long-lasting reliability in various industrial piping systems.
| Specifications | MS |
|---|---|
| Size Ranges | From 1/2 inch (i.e. 15 NB) upto 48 inch (i.e. 1200NB) |
| JIS Standards | 5 K, 10K, 16K, 20 K, 30K, 40K, 63 K |
| Flange Face Type | FF, RF, LMF, SMF, RTJ, LJF. |
| Pressure Classes | Cl 150, Class 300, Cl. 400, 600, Class 900, Cl 1500 and 2500 |
| Standards | ASME | BS | DIN | ANSI | GOST | EN Flange |
| UNI/ DIN / EN Standard | 6Bar, 10 Bar, 16Bar, 25 Bar, 40Bar |
| Composition | Content |
|---|---|
| Sulfur, S | ≤ 0.050 % |
| Iron, Fe | 98.81 – 99.26 % (as remainder) |
| Carbon, C | 0.14 – 0.20 % |
| Manganese, Mn | 0.60 – 0.90 % |
| Phosphorous, P | ≤ 0.040 % |
| Mechanical Properties | Metric | Imperial |
|---|---|---|
| Hardness, Knoop (Converted from Brinell hardness) | 145 | 145 |
| Hardness, Brinell | 126 | 126 |
| Tensile Strength, Yield | 370 MPa | 53700 psi |
| Elongation at Break (In 50 mm) | 15.0 % | 15.0 % |
| Poissons Ratio | 0.290 | 0.290 |
| Reduction of Area | 40.0 % | 40.0 % |
| Machinability (Based on AISI 1212 steel. as 100% machinability) | 70 % | 70 % |
| Modulus of Elasticity | 205 GPa | 29700 ksi |
| Bulk Modulus | 140 GPa | 20300 ksi |
| Shear Modulus | 80.0 GPa | 11600 ksi |
| Hardness, Vickers (Converted from Brinell hardness) | 131 | 131 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 71 | 71 |
| Tensile Strength, Ultimate | 440 MPa | 63800 psi |
| Size inches | Size (millimeter) | Flange Thk. | O.D. | RF Height | RF Diam. | PCD | Bolt Size UNC | No. of Bolts | Machine Bolt Length | Hole Size | RF Stud Length | ISO Stud Size | Wt in kilogram |
| B | A | D | C | E | |||||||||
| 1/2 | 15 | 9.6 | 90 | 2 | 34.9 | 60.3 | 1/2 | 4 | 50 | 5/8 | 55 | M14 | 0.9 |
| 3/4 | 20 | 11.2 | 100 | 2 | 42.9 | 69.9 | 1/2 | 4 | 50 | 5/8 | 65 | M14 | 0.9 |
| 1 | 25 | 12.7 | 110 | 2 | 50.8 | 79.4 | 1/2 | 4 | 55 | 5/8 | 65 | M14 | 0.9 |
| 1 1/4 | 32 | 14.3 | 115 | 2 | 63.5 | 88.9 | 1/2 | 4 | 55 | 5/8 | 70 | M14 | 1.4 |
| 1 1/2 | 40 | 15.9 | 125 | 2 | 73 | 98.4 | 1/2 | 4 | 65 | 5/8 | 70 | M14 | 1.8 |
| 2 | 50 | 17.5 | 150 | 2 | 92.1 | 120.7 | 5/8 | 4 | 70 | 3/4 | 85 | M16 | 2.3 |
| 2 1/2 | 65 | 20.7 | 180 | 2 | 104.8 | 139.7 | 5/8 | 4 | 75 | 3/4 | 90 | M16 | 3.2 |
| 3 | 80 | 22.3 | 190 | 2 | 127 | 152.4 | 5/8 | 4 | 75 | 3/4 | 90 | M16 | 4.1 |
| 3 1/2 | 90 | 22.3 | 215 | 2 | 139.7 | 177.8 | 5/8 | 8 | 75 | 3/4 | 90 | M16 | 5.9 |
| 4 | 100 | 22.3 | 230 | 2 | 157.2 | 190.5 | 5/8 | 8 | 75 | 3/4 | 90 | M16 | 7.7 |
| 5 | 125 | 22.3 | 255 | 2 | 185.7 | 215.9 | 3/4 | 8 | 85 | 7/8 | 95 | M20 | 9.1 |
| 6 | 150 | 23.9 | 280 | 2 | 215.9 | 241.3 | 3/4 | 8 | 85 | 7/8 | 100 | M20 | 11.8 |
| 8 | 200 | 27 | 345 | 2 | 269.9 | 298.5 | 3/4 | 8 | 90 | 7/8 | 110 | M20 | 20.5 |
| 10 | 250 | 28.6 | 405 | 2 | 323.8 | 362 | 7/8 | 12 | 100 | 1 | 115 | M24 | 32 |
| 12 | 300 | 30.2 | 485 | 2 | 381 | 431.8 | 7/8 | 12 | 100 | 1 | 120 | M24 | 50 |
| 14 | 350 | 33.4 | 535 | 2 | 412.8 | 476.3 | 1 | 12 | 115 | 1 1/8 | 135 | M27 | 64 |
| 16 | 400 | 35 | 595 | 2 | 469.9 | 539.8 | 1 | 16 | 115 | 1 1/8 | 135 | M27 | 82 |
| 18 | 450 | 38.1 | 635 | 2 | 533.4 | 577.9 | 1 1/8 | 16 | 125 | 1 1/4 | 145 | M30 | 100 |
| 20 | 500 | 41.3 | 700 | 2 | 584.2 | 635 | 1 1/8 | 20 | 140 | 1 1/4 | 160 | M30 | 130 |
| 24 | 600 | 46.1 | 815 | 2 | 692.2 | 749.3 | 1 1/4 | 20 | 150 | 1 3/8 | 170 | M33 | 196 |
Ismail Flanges, a leading supplier in Indonesia, Jakarta, offers an extensive selection of Mild Steel Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
Mild Steel Flanges from Ismail Flanges find extensive use in industries that need affordable and versatile flange solutions. They are commonly applied in water pipelines, HVAC systems, structural engineering, and low-pressure fluid transfer systems. Their ease of fabrication and welding makes them ideal for construction projects, automotive applications, and general engineering tasks. Additionally, Mild Steel Flanges are utilized in agricultural irrigation systems and drainage lines, thanks to their cost-effectiveness and sufficient strength for these purposes. Ismail Flanges offers a diverse range of Mild Steel Flanges, including slip-on, weld neck, and blind flanges, to meet various needs.
| NPS | O.D. of Flange | Flanges Thickness | Diameter of RF | Diameter of Hub at Base | Lengtd Tdru Hub | Bore or Diameter | Dia. of Hub at Bevel | Radius of Fillet | Deptd of Socket | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Welding (WN) Neck | Slip-On (SORF) Threaded (NPT) Socket (SWRF) | Lap Joint (Loose) | Slip-on (SORF) Socket (SWRF) | Lap Joint (Loose) | ||||||||
| O | Q | R | X | Y | Y | Y | W | B | H | r | Z | |
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 1-7/8 | 5/8 | 5/8 | .88 | .90 | .84 | 1/8 | 3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 2-1/16 | 5/8 | 5/8 | 1.09 | 1.11 | 1.05 | 1/8 | 7/16 |
| 1 | 4-1/4 | 9/16 | 2 | 1-15/16 | 2-3/16 | 11/16 | 11/16 | 1.36 | 1.38 | 1.32 | 1/8 | 1/2 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 2-5/16 | 2-1/4 | 13/16 | 13/16 | 1.70 | 1.72 | 1.66 | 3/16 | 9/16 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 2-9/16 | 2-7/16 | 7/8 | 7/8 | 1.95 | 1.97 | 1.90 | 1/4 | 5/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 2-1/2 | 1 | 1 | 2.44 | 2.46 | 2.38 | 5/16 | 11/16 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 3-9/16 | 2-3/4 | 1-1/8 | 1-1/8 | 2.94 | 2.97 | 2.88 | 5/16 | 3/4 |
| 3 | 7-1/2 | 15/16 | 5 | 4-1/4 | 2-3/4 | 1-3/16 | 1-3/16 | 3.57 | 3.60 | 3.50 | 3/8 | 13/16 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 4-13/16 | 2-13/16 | 1-1/4 | 1-1/4 | 4.07 | 4.10 | 4.00 | 3/8 | 7/8 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 3 | 1-5/16 | 1-5/16 | 4.57 | 4.60 | 4.50 | 7/16 | 15/16 |
| 5 | 10 | 15/16 | 7.5/16 | 6-7/16 | 3-1/2 | 1-7/16 | 1-7/16 | 5.66 | 5.69 | 5.56 | 7/16 | 15/16 |
| 6 | 11 | 1 | 8-1/2 | 7-9/16 | 3-1/2 | 1-9/16 | 1-9/16 | 6.72 | 6.75 | 6.63 | 1/2 | 1-1/16 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 9-11/16 | 4 | 1-3/4 | 1-3/4 | 8.72 | 8.75 | 8.63 | 1/2 | 1-1/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 4 | 1-15/16 | 1-15/16 | 10.88 | 10.92 | 10.75 | 1/2 | 1-5/16 |
| 12 | 19 | 1-1/4 | 15 | 14-3/8 | 4-1/2 | 2-3/16 | 2-3/16 | 12.88 | 12.92 | 12.75 | 1/2 | 1-9/16 |
| 14 | 21 | 1-3/8 | 16-1/4 | 15-3/4 | 5 | 2-1/4 | 3-1/8 | 14.14 | 14.18 | 14.00 | 1/2 | 1-5/8 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 18 | 5 | 2-1/2 | 3-7/16 | 16.16 | 16.19 | 16.00 | 1/2 | 1-3/4 |
| 18 | 25 | 1-9/16 | 21 | 19-7/8 | 5-1/2 | 2-11/16 | 3-13/16 | 18.18 | 18.20 | 18.00 | 1/2 | 1-15/16 |
| 20 | 27-1/2 | 1-11/16 | 23 | 22 | 5-11/16 | 2-7/8 | 4-1/16 | 20.20 | 20.25 | 20.00 | 1/2 | 2-1/8 |
| 24 | 32 | 1-7/8 | 27-1/4 | 26-1/8 | 6 | 3-1/4 | 4-3/8 | 24.25 | 24.25 | 24.00 | 1/2 | 2-1/2 |
| Nominal Pipe Sizes (NPS) | Slip On (SORF) | Threaded (NPT) | Socket Weld (SWRF) | Lap Joint (Loose) | Blind (BLRF) | Weld Neck (WRNR) |
|---|---|---|---|---|---|---|
| ½ | 1 | 1 | 2 | 1 | 2 | 2 |
| ¾ | 2 | 2 | 2 | 2 | 2 | 2 |
| 1 | 2 | 2 | 2 | 2 | 2 | 3 |
| 1¼ | 3 | 3 | 3 | 3 | 3 | 3 |
| 1½ | 3 | 3 | 3 | 3 | 4 | 4 |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 |
| 2½ | 8 | 8 | 8 | 8 | 7 | 10 |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 |
| 3½ | 11 | 12 | 11 | 11 | 13 | 12 |
| 4 | 13 | 13 | 13 | 13 | 17 | 16.5 |
| 5 | 15 | 15 | 15 | 15 | 20 | 21 |
| 6 | 19 | 19 | 19 | 19 | 27 | 26 |
| 8 | 30 | 30 | 30 | 30 | 47 | 42 |
| 10 | 43 | 43 | 43 | 43 | 70 | 54 |
| 12 | 64 | 64 | 64 | 64 | 123 | 88 |
| 14 | 90 | 90 | 90 | 105 | 140 | 114 |
| 16 | 106 | 98 | 98 | 140 | 180 | 140 |
| 18 | 130 | 130 | 130 | 160 | 220 | 165 |
| 20 | 165 | 165 | 165 | 195 | 285 | 197 |
| 22 | 185 | 185 | 185 | 245 | 355 | 225 |
| 24 | 220 | 220 | 220 | 275 | 430 | 268 |
Yes, we offer custom sizes for Mild Steel Flanges to meet specific project needs. Our team at Ismail Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ismailflanges.id.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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