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A forged fitting bushing is a type of pipe fitting used to change the size of a threaded connection, typically used to reduce or enlarge the pipe diameter at a specific point. A bushing has one end with a larger thread size and the other with a smaller thread size, making it ideal for adapting different pipe sizes.
Forged bushings are manufactured through the hot forging process, which ensures they have a dense, durable structure capable of withstanding high pressure and temperature. These bushings are often made from carbon steel, stainless steel, or alloy steel, depending on the required strength, corrosion resistance, and application.
Specifications
| Specification | Details |
|---|---|
| Type | Forged Bushing (Threaded Connection) |
| Thread Sizes | Typically NPT (National Pipe Thread) or BSP (British Standard Pipe) threads |
| Pressure Rating | Class 2000, 3000, 6000 |
| Materials | - Carbon Steel (ASTM A105) |
| - Stainless Steel (ASTM A182 F304, F316) | |
| - Alloy Steel (ASTM A182 F5, F9) | |
| Size Range | 1/8” to 4” NPS |
| Temperature Range | Varies by material (typically designed for high-pressure and high-temperature environments) |
| Design Standards | ASME B16.11, MSS SP-83, BS 3799 |
| End Connections | Threaded (NPT or BSP) |
| Applications | Oil & Gas, Petrochemical, Power Generation, Hydraulic Systems, Water Treatment |
Grades
| Material Type | Grade | Description |
|---|---|---|
| Carbon Steel | ASTM A105 | Standard carbon steel grade for general-purpose applications. Suitable for high-pressure systems. |
| Stainless Steel | ASTM A182 F304 | General-purpose stainless steel with good corrosion resistance. Widely used in chemical and food industries. |
| ASTM A182 F316 | Improved corrosion resistance, especially in marine or acidic environments. Common in harsh environments. | |
| Alloy Steel | ASTM A182 F5 | Chromium alloy steel, suitable for high-temperature and high-pressure applications like steam systems. |
| ASTM A182 F9 | Higher strength and temperature resistance than F5, used in heat exchangers and boilers. | |
| Duplex Stainless Steel | ASTM A182 F51 | High strength and excellent resistance to pitting and corrosion, especially in chloride-rich environments. |
| Low-Temperature Carbon Steel | ASTM A350 LF2 | Designed for low-temperature applications, such as cryogenic systems and low-temperature piping. |
| Specification | Details |
|---|---|
| Threaded Connections | Designed with different thread sizes on each end (typically NPT or BSP threads). |
| Pressure Rating | Suitable for high-pressure systems (Class 2000, 3000, 6000). |
| Materials | - Carbon Steel (ASTM A105) |
| - Stainless Steel (ASTM A182 F304, F316) | |
| - Alloy Steel (ASTM A182 F5, F9) | |
| Size Range | Typically from 1/8” to 4” NPS |
| Standards | Complies with ASME B16.11, MSS SP-83, BS 3799 |
Dimenstion Chart
| Size (NPS) | Threaded (NPT/BSP) Length (inches) | Socket Weld Length (inches) | Outside Diameter (inches) | Pressure Class (Class) |
|---|---|---|---|---|
| 1/8" | 1.00 | 1.00 | 0.405 | 2000, 3000, 6000 |
| 1/4" | 1.10 | 1.10 | 0.540 | 2000, 3000, 6000 |
| 3/8" | 1.20 | 1.20 | 0.675 | 2000, 3000, 6000 |
| 1/2" | 1.40 | 1.40 | 0.840 | 2000, 3000, 6000 |
| 3/4" | 1.60 | 1.60 | 1.050 | 2000, 3000, 6000 |
| 1" | 1.80 | 1.80 | 1.315 | 2000, 3000, 6000 |
| 1 1/4" | 2.00 | 2.00 | 1.660 | 2000, 3000, 6000 |
| 1 1/2" | 2.20 | 2.20 | 1.900 | 2000, 3000, 6000 |
| 2" | 2.50 | 2.50 | 2.375 | 2000, 3000, 6000 |
| 2 1/2" | 3.00 | 3.00 | 2.875 | 2000, 3000, 6000 |
| 3" | 3.50 | 3.50 | 3.500 | 2000, 3000, 6000 |
| 4" | 4.00 | 4.00 | 4.500 | 2000, 3000, 6000 |