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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ASTM A182 F321H Stainless Steel Flanges are specialized high-carbon, titanium-stabilized austenitic piping components engineered for severe, high-temperature structural applications. Manufactured in strict accordance with the ASTM A182 and ASME SA182 standards, these forged flanges are produced from grade 321H stainless steel. By maintaining a higher carbon range of 0.04% to 0.10%, these F321H flanges provide enhanced creep strength and higher resistance to stress rupture at temperatures exceeding 538 °C (1000 °F), while the titanium stabilization prevents intergranular corrosion.
Our manufacturing facility delivers a comprehensive range of ASTM A182 F321H slip-on, weld neck, blind, threaded, and socket weld flanges. These components are available across all standard pressure classes from Class 150 up to Class 2500 and are precision CNC machined to ensure high-integrity seating surfaces. Designed to withstand continuous thermal cycles, these high-temperature flanges are the industry benchmark for oil refineries, thermal power generation plants, superheater tubes, and petrochemical processing lines handling extremely hot fluids.
| Specification | Details |
|---|---|
| Specification | ASTM A182 / A403 & ASME SA182 / SA403 |
| Grade | ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L |
| 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 Stainless 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 | Stainless Steel Blind Flanges, Stainless Steel Table Flanges, Stainless Steel Weld Neck Flanges, Stainless Steel Threaded Flanges, Stainless Steel Slip-On Flanges, Stainless Steel Socketweld Flanges, Stainless Steel Plate Flanges, Stainless Steel Lap Joint Flanges, Stainless Steel Loose Flanges, and Stainless Steel Orifice Flanges. Stainless 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 |
|---|---|---|
| Stainless Steel 321H Blind Flanges | DN15 – DN2500 | DIN2527 PN16 DN150 BL 300lb 6" |
| ½" – 24" | Standard ANSI / ASME Class 150 to 2500 | |
| Stainless Steel 321H Threaded with neck | DN15 – DN150 | DIN2566 DN32 / 42.4 TH 300lb 1" |
| Stainless Steel 321H Threaded Flanges | ½" – 24" | Standard Threaded NPT / BSPT Sizes |
| Flanges smooth for welding (Plate) | DN15 – DN2500 | DIN2576 DN150 |
| Stainless Steel 321H 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 | |
| Stainless Steel 321H loose flanges, smooth Bunde | DN15 – DN2500 | DIN2642 DN150 |
| Stainless Steel 321H loose flanges Stub | DN15 – DN2500 | DIN2673 DN150 |
| Stainless Steel 321H Welding flanges with neck | DN15 – DN2500 | DIN86030 DN150 |
| Stainless Steel 321H Slip On Flanges | ½" – 24" | SO 300lb 6" |
| Dy10 – Dy2400 | GOST Standard Specifications | |
| Stainless Steel 321H Lap Joint Flanges | ½" – 24" | LJ 300lb 6" |
| Stainless Steel 321H 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 |
Stainless Steel 321H Weld Neck Flange
Stainless Steel 321H Lap Joint Flange
Stainless Steel 321H Orifice Flange
Stainless Steel 321H Spectacle Blind Flange
Stainless Steel 321H Ring Flange
Stainless Steel 321H Socket Weld Flange
| Element | Value (%) |
|---|---|
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 17.00 – 19.00 |
| Nickel (Ni) | 9.00 – 12.00 |
| Titanium (Ti) | 4 x C min to 0.70 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 515 min |
| Yield Strength (0.2% Offset, MPa) | 205 min |
| Elongation in 2 in. or 50mm (%) | 30 min |
| Reduction of Area (%) | 50 min |
| Hardness (Brinell HBW) | 201 max |
| Hardness (Rockwell B) | 92 max |
| 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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