Supachok Flanges, a well-respected manufacturer and supplier located in Bangkok, Thailand, specializes in high-quality Super Duplex Steel Flanges that are built for exceptional strength, durability, and resistance to corrosion. With state-of-the-art manufacturing facilities and a strong commitment to global standards, this company produces flanges that meet the rigorous demands of industries like oil and gas, petrochemicals, power generation, and marine engineering. Supachok Flanges prides itself on delivering reliable, cost-effective, and long-lasting solutions, all backed by technical expertise and a focus on customer service, making it a trusted partner for clients both at home and abroad.
Super Duplex Steel Flanges are made up of about 24–26% chromium, 6–8% nickel, 3–4% molybdenum, and nitrogen, resulting in a well-balanced dual-phase microstructure of ferrite and austenite. This unique composition gives them remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, these flanges boast high tensile and yield strength, impressive impact toughness, and strong resistance to fatigue and wear. Their combination of structural integrity and durability makes them perfect for tough industrial environments and applications that demand both performance and longevity.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/8″ NB TO 24″ NB |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | : | S32750 / S32760 / S32950 |
Supachok Flanges, a leading supplier in Bangkok, Thailand, offers an extensive selection of Super Duplex 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.
| % | ASTM A182 Super Duplex UNS S32750 And UNS 32760 Flanges |
| C | 0.03 maximum |
| Mn | 1.5 |
| Mo | 3.0-5.0 |
| Ni | 5.5-8.0 |
| N | 0.2-0.35 |
| Si | 0.8 |
| P | 0.035 |
| S | 0.02 |
| Cr | 24-26 |
| Cu | 0.5-3.0 |
| Tensile Strength (in MPa) | 770 |
| A5 Elongation (in %) | 25 |
| Proof Stress 0.2% (in MPa) | 550 |
Super Duplex Steel Flanges find extensive use across a variety of industries that prioritize strength and corrosion resistance. In the oil and gas sector, they are crucial for offshore platforms, subsea equipment, and pipelines that face chloride-rich conditions. In the petrochemical and chemical industries, they are utilized in reactors, pressure vessels, and heat exchangers. Marine applications include shipbuilding, desalination plants, and seawater cooling systems. Furthermore, they are also used in paper and pulp, power generation, and structural engineering projects, providing a long service life, safety, and dependable performance even under extreme operating conditions.
| Normal Pipe Size | Flanges Diameter (‘O’) | Diameter of (B.C.) ‘A’ | Diameter of (B.H.) ‘D’ | Holes Number | Flanges Wall Thickness ‘C’ | Diameter (Flanges) at Weld Bevel | (Flanges) Diameter of Hub ‘E’ | Length Of Through Hub | Bore (‘B’) | Diameter of (RF) R | Depth of Socket Weld F | Threading Length | ||||
| SORF/ SWRF (Y) | WNRF (Y) | Lap Joit (Y) | SORF/ SWRF (B) | Lap Joit (B) | ||||||||||||
| 1/2” | 15 | 95.2 | 66.7 | 15.9 | 4 | 14.3 | 21.3 | 38.1 | 22.2 | 52.4 | 22.2 | 22.3 | 22.9 | 34.9 | 9.5 | 15.9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/4” | 20 | 117.5 | 82.5 | 19.0 | 4 | 15.9 | 26.7 | 47.6 | 25.4 | 57.1 | 25.4 | 27.7 | 28.2 | 42.9 | 11.1 | 15.9 |
| 1” | 25 | 123.8 | 88.9 | 19.0 | 4 | 17.5 | 33.5 | 54.0 | 27.0 | 61.9 | 27.0 | 34.5 | 35.0 | 50.8 | 12.7 | 17.5 |
| 1 | 32 | 133.3 | 98.4 | 19.0 | 4 | 20.6 | 42.2 | 63.5 | 28.6 | 66.7 | 28.6 | 43.2 | 43.7 | 63.5 | 14.3 | 20.6 |
| 1 | 40 | 155.6 | 114.3 | 22.2 | 4 | 22.2 | 48.3 | 69.8 | 31.7 | 69.8 | 31.7 | 49.5 | 50.0 | 73.0 | 15.9 | 22.2 |
| 2” | 50 | 165.1 | 127.0 | 19.0 | 8 | 25.4 | 60.4 | 84.1 | 36.5 | 73.0 | 36.5 | 62.0 | 62.5 | 92.1 | 17.5 | 25.4 |
| 2 | 65 | 190.5 | 149.2 | 22.2 | 8 | 28.6 | 73.1 | 100.0 | 41.3 | 79.4 | 41.3 | 74.7 | 75.4 | 104.8 | 19.0 | 28.6 |
| 3” | 80 | 209.5 | 168.3 | 22.2 | 8 | 31.8 | 88.9 | 117.5 | 46.0 | 82.5 | 46.0 | 90.7 | 91.4 | 127.0 | – | 30.2 |
| 3 | 90 | 228.5 | 184.2 | 22.2 | 8 | 34.9 | 101.6 | 133.4 | 49.3 | 85.7 | 49.3 | 103.4 | 104.1 | 140.0 | – | 31.7 |
| 4” | 100 | 273.0 | 215.9 | 25.4 | 8 | 38.1 | 114.3 | 152.4 | 54.0 | 101.6 | 54.0 | 116.1 | 116.8 | 157.2 | – | 33.3 |
| 5” | 125 | 330.2 | 266.7 | 28.6 | 8 | 44.4 | 141.2 | 188.9 | 60.3 | 114.3 | 60.3 | 143.8 | 144.5 | 185.7 | – | 36.5 |
| 6” | 150 | 355.6 | 292.1 | 28.6 | 12 | 47.6 | 168.4 | 222.2 | 66.7 | 117.5 | 66.7 | 170.7 | 171.4 | 215.9 | – | 39.7 |
| 8” | 200 | 419.1 | 349.2 | 31.7 | 12 | 55.6 | 219.2 | 273.0 | 76.2 | 133.3 | 76.2 | 221.5 | 222.2 | 269.9 | – | 44.4 |
| 10” | 250 | 508.0 | 431.8 | 34.9 | 16 | 63.5 | 273.0 | 342.9 | 85.7 | 152.4 | 111.2 | 276.3 | 277.4 | 323.8 | – | 49.2 |
| 12” | 300 | 558.8 | 488.9 | 34.9 | 20 | 66.7 | 323.8 | 400.0 | 92.1 | 155.6 | 117.3 | 327.1 | 328.2 | 381.0 | – | 55.6 |
| 14” | 350 | 603.2 | 527.0 | 38.1 | 20 | 69.9 | 355.6 | 431.8 | 93.7 | 165.1 | 127.0 | 359.1 | 360.2 | 412.7 | – | 57.1 |
| 16” | 400 | 685.8 | 603.2 | 41.3 | 20 | 76.2 | 406.4 | 495.3 | 106.4 | 177.8 | 139.7 | 410.5 | 411.2 | 469.9 | – | 63.5 |
| 18” | 450 | 742.9 | 654.0 | 44.4 | 24 | 82.6 | 457.2 | 546.1 | 117.5 | 184.1 | 152.4 | 461.8 | 462.3 | 533.4 | – | 68.3 |
| 20” | 500 | 812.8 | 723.9 | 44.4 | 24 | 88.9 | 508.0 | 609.6 | 127.0 | 190.5 | 165.1 | 513.1 | 514.3 | 584.2 | – | 73.0 |
| 24” | 600 | 939.8 | 838.2 | 50.8 | 24 | 101.6 | 609.6 | 717.5 | 139.7 | 203.2 | 184.1 | 615.9 | 615.9 | 692.1 | – | 82.5 |
Yes, we offer custom sizes for Super Duplex Steel Flanges to meet specific project needs. Our team at Supachok Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@supachokflanges.com.
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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