Ismail Flanges, a Jakarta, Indonesia-based company, is a renowned Carbon Steel Socket Weld Flanges manufacturer and supplier renowned for offering resilient, affordable piping system solutions. The flanges are intended for use in high-pressure, small-diameter pipelines and are suited for applications with a need for firm, leak-resistant joints. The socket weld configuration makes it possible to insert the pipe into the flange prior to welding to enable precise alignment and flow quality. ASME and ASTM compliant, Ismail Flanges Carbon Steel Socket Weld Flanges provide superior mechanical strength, close dimensional tolerances, and long service life.
Ismail Flanges Carbon Steel Socket Weld Flanges are usually produced from ASTM A105 or A350 LF2 steel, which offers superior tensile strength, impact resistance, and weldability. These flanges are generally furnished with tensile strengths between 485 MPa and 620 MPa and are used in ambient as well as low-temperature applications. The socket weld design minimizes leakage tendencies and enhances the weld joint integrity. These flanges can be supplied with raised or flat faces based on system requirements and are resilient to moderate corrosion through suitable surface treatment.
| Specification | ASTM A694 / ASME SA694 |
|---|---|
| Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged, Heat treated and machined |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Manufacturer of | ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange B.S: BS4504 , BS3293, BS1560, BS10 AS 2129: Table D; Table E; Table H ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48 ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 American standard (ANSI) German (DIN) British standard (BS) DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 ASTM A694 LF2 Carbon Steel Flanges The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276 |
| Grades | Carbon Steel LF2, A36, F65, F80, F60, A105, F52, F70, F42, IS2062 |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Ismail Flanges, a leading supplier in Indonesia, Jakarta, offers an extensive selection of Carbon Steel Weldneck 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.
These flanges are used extensively in oil and gas plants, chemical plants, water treatment plants, power plants, and refineries. They are best suited for high-pressure fluid, gas, and steam systems where welding access is restricted. They are ideal for close spaces and critical usage due to their low profile and consistent sealing performance. Carbon Steel Socket Weld Flanges provide solid mechanical connections and simple installation, which is why they are a convenient option for new installations and maintenance activities in industrial pipe networks.
| Size in In | Size in Millimeter | (OD) Outer Diameter | Flange Thick. | Hub OD | Weld Neck Outer Diameter | Welding Neck Length | Bore | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | J | ||
| 1/2 | 15 | 95 | 12.7 | 38 | 21.3 | 51 | Refer Note | 34.9 | 2 | 66.7 | 1.6 |
| 3/4 | 20 | 115 | 14.3 | 48 | 26.7 | 56 | 42.9 | 2 | 82.6 | 1.6 | |
| 1 | 25 | 125 | 15.9 | 54 | 33.4 | 60 | 50.8 | 2 | 88.9 | 1.6 | |
| 1 1/4 | 32 | 135 | 17.5 | 64 | 42.2 | 64 | 63.5 | 2 | 98.4 | 1.6 | |
| 1 1/2 | 40 | 155 | 19.1 | 70 | 48.3 | 67 | 73 | 2 | 114.3 | 1.6 | |
| 2 | 50 | 165 | 20.7 | 84 | 60.3 | 68 | 92.1 | 2 | 127 | 1.6 | |
| 2 1/2 | 65 | 190 | 23.9 | 100 | 73 | 75 | 104.8 | 2 | 149.2 | 1.6 | |
| 3 | 80 | 210 | 27 | 117 | 88.9 | 78 | 127 | 2 | 168.3 | 1.6 | |
| 3 1/2 | 90 | 230 | 28.6 | 133 | 101.6 | 79 | 139.7 | 2 | 184.2 | 1.6 | |
| 4 | 100 | 255 | 30.2 | 146 | 114.3 | 84 | 157.2 | 2 | 200 | 1.6 | |
| 5 | 125 | 280 | 33.4 | 178 | 141.3 | 97 | 185.7 | 2 | 235 | 1.6 | |
| 6 | 150 | 320 | 35 | 206 | 168.3 | 97 | 215.9 | 2 | 269.9 | 1.6 | |
| 8 | 200 | 380 | 39.7 | 260 | 219.1 | 110 | 269.9 | 2 | 330.2 | 1.6 | |
| 10 | 250 | 445 | 46.1 | 321 | 273 | 116 | 323.8 | 2 | 387.4 | 1.6 | |
| 12 | 300 | 520 | 49.3 | 375 | 323.8 | 129 | 381 | 2 | 450.8 | 1.6 | |
| 14 | 350 | 585 | 52.4 | 425 | 355.6 | 141 | 412.8 | 2 | 514.4 | 1.6 | |
| 16 | 400 | 650 | 55.6 | 483 | 406.4 | 144 | 469.9 | 2 | 571.5 | 1.6 | |
| 18 | 450 | 710 | 58.8 | 533 | 457 | 157 | 533.4 | 2 | 628.6 | 1.6 | |
| 20 | 500 | 775 | 62 | 587 | 508 | 160 | 584.2 | 2 | 685.8 | 1.6 | |
| 24 | 600 | 915 | 68.3 | 702 | 610 | 167 | 692.2 | 2 | 812.8 | 1.6 |
| Welding Neck Flange Bores (in inch) | ||||||||||||||
| NPS | O D | Sch 10 | Sch 20 | Sch 30 | Std. Wall | Sch 40 | Sch 60 | Extra Strong | Sch 80 | Sch 100 | Sch 120 | Sch 140 | Sch 160 | Double Extra Strong |
| 1/2” | 0.840 | 0.674 | 0.622 | 0.622 | 0.546 | 0.546 | 0.464 | 0.252 | ||||||
| 3/4” | 1.050 | 0.884 | 0.824 | 0.824 | 0.742 | 0.742 | 0.612 | 0.434 | ||||||
| 1” | 1.315 | 1.097 | 1.049 | 1.049 | 0.957 | 0.957 | 0.815 | 0.599 | ||||||
| 1.1/4” | 1.660 | 1.442 | 1.380 | 1.380 | 1.278 | 1.278 | 1.160 | 0.896 | ||||||
| 1.1/2” | 1.900 | 1.682 | 1.610 | 1.610 | 1.500 | 1.500 | 1.338 | 1.100 | ||||||
| 2” | 2.375 | 2.157 | 2.067 | 2.067 | 1.939 | 1.939 | 1.687 | 1.503 | ||||||
| 2.1/2” | 2.875 | 2.635 | 2.469 | 2.469 | 2.323 | 2.323 | 2.125 | 1.771 | ||||||
| 3” | 3.500 | 3.260 | 3.068 | 3.068 | 2.900 | 2.900 | 2.624 | 2.300 | ||||||
| 3-1/2” | 4.000 | 3.760 | 3.548 | 3.548 | 3.364 | 3.364 | 2.728 | |||||||
| 4” | 4.500 | 4.260 | 4.026 | 4.026 | 3.826 | 3.826 | 3.624 | 3.438 | 3.152 | |||||
| 5” | 5.563 | 5.295 | 5.047 | 5.047 | 4.813 | 4.813 | 4.563 | 4.313 | 4.063 | |||||
| 6” | 6.625 | 6.357 | 6.065 | 6.065 | 5.761 | 5.761 | 5.501 | 5.187 | 4.897 | |||||
| 8” | 8.625 | 8.329 | 8.125 | 8.071 | 7.981 | 7.981 | 7.813 | 7.625 | 7.625 | 7.437 | 7.187 | 7.001 | 6.813 | 6.875 |
| 10” | 10.750 | 10.420 | 10.250 | 10.136 | 10.020 | 10.020 | 9.750 | 9.750 | 9.562 | 9.312 | 9.062 | 8.750 | 8.500 | 8.750 |
| 12” | 12.750 | 12.390 | 12.250 | 12.090 | 12.000 | 11.938 | 11.626 | 11.750 | 11.374 | 11.062 | 10.750 | 10.500 | 10.126 | 10.750 |
| 14” | 14.000 | 13.500 | 13.376 | 13.250 | 13.250 | 13.124 | 12.812 | 13.000 | 12.500 | 12.124 | 11.814 | 11.500 | 11.188 | |
| 16” | 16.000 | 15.500 | 15.376 | 15.250 | 15.250 | 15.000 | 14.688 | 15.000 | 14.312 | 13.938 | 13.564 | 13.124 | 12.812 | |
| 18” | 18.000 | 17.500 | 17.376 | 17.124 | 17.250 | 16.876 | 16.500 | 17.000 | 16.124 | 15.688 | 15.250 | 14.876 | 14.438 | |
| 20” | 20.000 | 19.500 | 19.250 | 19.000 | 19.250 | 18.812 | 18.376 | 19.000 | 17.938 | 17.438 | 17.000 | 16.500 | 16.062 | |
| 24” | 24.000 | 23.500 | 23.250 | 22.876 | 23.250 | 22.624 | 22.062 | 23.000 | 21.562 | 20.938 | 20.376 | 19.876 | 19.312 | |
| 30” | 30.000 | 29.376 | 29.000 | 28.750 | 29.250 | 29.000 | ||||||||
| 36” | 36.000 | 35.376 | 35.000 | 34.750 | 35.250 | 34.500 | 35.000 | |||||||
| 42” | 42.000 | 41.250 | 41.000 | |||||||||||
Yes, we offer custom sizes for Carbon Steel Socket Weld 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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