Golden Steel Material is a premier ISO-certified stockist based in Al Jubail. We supply high-performance pipes, fittings, valves, and flanges to the Oil & Gas and Industrial sectors across Saudi Arabia and the GCC.
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Alloy Steel Flanges are specialized piping components engineered to withstand extreme temperatures and high-pressure conditions that exceed the capabilities of standard carbon steel. Manufactured in accordance with ASTM A182 and ASME SA182 standards, these flanges contain varying amounts of alloying elements such as Chromium, Molybdenum, and Manganese. These additions significantly enhance the material's tensile strength, toughness, and resistance to creep and oxidation. Our range includes high-demand grades like F5, F9, F11, F22, and the high-performance F91, which is essential for critical power generation and petrochemical applications.
We specialize in the production of Alloy Steel weld neck, slip-on, blind, and socket weld flanges, providing reliable sealing solutions for refineries, boiler plants, and heat exchangers. To ensure long-term structural integrity, our alloy steel flanges undergo rigorous heat treatment processes, including normalizing and tempering, to achieve the desired metallurgical properties. Precision CNC machining ensures that each flange meets the strict dimensional tolerances of ASME B16.5 or B16.47. Whether your project requires the thermal stability of Chrome-Moly steel or the enhanced hardness of low-alloy variants, our flanges offer the durability needed for the most demanding industrial environments.
| Specification | Details |
|---|---|
| Specification | ASTM A182 / A403 & ASME SA182 / SA403 |
| Grade | ASTM A182 F1, F5, F9, F11, F12, F22, F91 |
| Connect Type/ Flange Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove |
| Surface treatment | Anti-rust oil, transparent/ yellow/ black anti trst paint, Zinc, hot dipped galvanized |
| Size Range | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
| Pressure | DIN:PN6 PN10 PN16 PN25 PN40; ANSI: class: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-PN6, PN10, PN16, PN25, PN40, PN64 etc. JIS: 5K, 10 K, 16 K 20 K,30 K,40 K, 63 K |
| Standard | ANSI DIN,GOST,JIS,UNI,BS,AS2129,AWWA,EN,SABS,NFE etc. ASME, API, ASTM, BS, DIN, EN, MSS, JIS, AWWA, GOST ANSI Flange, ASME Flange, BS Flange, DIN Flange, EN Flange
|
| Production technique: | Forged, Heat treated and machined |
| Special Design |
As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations Alloy Steel Threaded Flange, Slip-On Flange, Socketweld Flange, Weld Neck Flange, Blind Flange |
| 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 |
| Origin | West Europe / Japan / Indian / USA / Korean |
| Test Certificates | Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report |
| Specialized manufacturer of | Alloy Steel Blind Flanges, Alloy Steel Table Flanges, Alloy Steel Weld Neck Flanges, Alloy Steel Threaded Flanges, Alloy Steel Slip-On Flanges, Alloy Steel Socketweld Flanges, Alloy Steel Plate Flanges, Alloy Steel Lap Joint Flanges, Alloy Steel Loose Flanges, and Alloy Steel Orifice Flanges. Alloy Steel AS 4087 Water Flanges are available in class 150, 300, 600, 900, 1500 and 2500. |
| Key markets and industries |
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| Similar Pipe Flange Key Grades |
|
| Flange Type | Dimension Range | Standard / Drawing Valid Norm |
|---|---|---|
| Alloy Steel Blind Flanges | DN15 – DN2500 | DIN2527 PN16 DN150 BL 300lb 6" |
| ½" – 24" | Standard ANSI / ASME Class 150 to 2500 | |
| Alloy Steel Threaded with neck | DN15 – DN150 | DIN2566 DN32 / 42.4 TH 300lb 1" |
| Alloy Steel Threaded Flanges | ½" – 24" | Standard Threaded NPT / BSPT Sizes |
| Flanges smooth for welding (Plate) | DN15 – DN2500 | DIN2576 DN150 |
| Alloy Steel Welding Neck Flanges | DN15 – DN2500 | DIN2635 DN150 / 168.3 WN 300lb 6", GOST Dy150 Py16 |
| ½" – 24" / Dy10 – Dy2400 | ASME B16.5 WN Classes 150 – 2500 | |
| Alloy Steel loose flanges, smooth Bunde | DN15 – DN2500 | DIN2642 DN150 |
| Alloy Steel loose flanges Stub | DN15 – DN2500 | DIN2673 DN150 |
| Alloy Steel Welding flanges with neck | DN15 – DN2500 | DIN86030 DN150 |
| Alloy Steel Slip On Flanges | ½" – 24" | SO 300lb 6" |
| Dy10 – Dy2400 | GOST Standard Specifications | |
| Alloy Steel Lap Joint Flanges | ½" – 24" | LJ 300lb 6" |
| Alloy Steel Socket Welding Flanges | ½" – 3" | SW 300lb 6" |
| Forged and Plate Flanges (Slip-On, Weld Neck, Blind, Lap Joint, Threaded, Socket Weld, Reducing, Plate) |
½" – 36" | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue & Groove |
Alloy Steel Weld Neck Flange
Alloy Steel Lap Joint Flange
Alloy Steel Orifice Flange
Alloy Steel Spectacle Blind Flange
Alloy Steel Ring Flange
Alloy Steel Socket Weld Flange
| Grade (ASTM A182) | C (%) | Mn (%) | Si (%) | Cr (%) | Mo (%) |
|---|---|---|---|---|---|
| F5 | 0.15 max | 0.30–0.60 | 0.50 max | 4.00–6.00 | 0.44–0.65 |
| F9 | 0.15 max | 0.30–0.60 | 0.50–1.00 | 8.00–10.00 | 0.90–1.10 |
| F11 (Cl. 2) | 0.10–0.20 | 0.30–0.80 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 |
| F22 (Cl. 3) | 0.05–0.15 | 0.30–0.60 | 0.50 max | 2.00–2.50 | 0.87–1.13 |
| F91 | 0.08–0.12 | 0.30–0.60 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Hardness (HBW) |
|---|---|---|---|
| ASTM A182 F5 | 485 min | 275 min | 143 - 217 |
| ASTM A182 F9 | 585 min | 380 min | 179 - 217 |
| ASTM A182 F11 (Cl. 2) | 485 min | 275 min | 143 - 207 |
| ASTM A182 F22 (Cl. 3) | 515 min | 310 min | 156 - 207 |
| ASTM A182 F91 | 585 min | 415 min | 190 - 248 |
| Industrial Locations & Keywords |
|---|
| Riyadh Industrial Cities (1st, 2nd, 3rd & Sudair) |
| Jeddah Industrial Cities (1st, 2nd & 3rd) |
| Dammam Industrial Areas (1st, 2nd & 3rd) |
| Jubail Industrial City |
| Yanbu Industrial City |
| Rabigh Industrial City |
| Al Khobar Industrial Area |
| Al Ahsa Industrial City |
| Madinah Industrial City |
| Makkah Industrial City |
| Taif Industrial City |
| Tabuk Industrial City |
| Jazan Industrial City |
| Industrial supplier in Saudi Arabia |
| Pipe fittings supplier in Jubail / Dammam / Riyadh |
| Flange and valve supplier Saudi Arabia |
| Fast delivery industrial materials KSA |
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