Duplex Steel Forged Fittings
Duplex steel is a special steel with excellent corrosion resistance and high strength, widely used in the Petroleum, chemical, electric power and other industries. Forging duplex steel pipe fittings is an important processing method to produce highly reliable and excellent performance pipe fittings. It can produce highly reliable and excellent performance pipe fittings.
| Size | 1/2"NB TO 4"NB IN |
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.11 & BS3799, etc. |
| Grade | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Class | 2000LBS, 3000LBS, 6000LBS, 9000LBS, etc. |
| Type | Socket Weld (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT, Threaded Fittings |
Duplex Steel Forged Fittings Manufacturing Standards :
| ASTM A182 - ASME SA182 | Standard Specification for Wrought Austenitic Duplex Steel Piping Fittings |
| ASME B16.11 | Socket Welding and Threaded Forged Fittings |
| MSS SP-43 | Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications |
| MSS SP-95 | Swage(d) Nipples and Bull Plugs |
| BS3799 | Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry |
ASTM A182 Duplex Steel Forged Fitting Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
Grade S31803 / S32205 Duplex Steel Forged Fitting Mechanical properties
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 / S32205 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
A182 Steel Pipe Cap
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