American socket weld 90° elbow
- Standards: ASME B16.11, ASME B16.9
- Size range: Nominal diameter 1/4“ to 2” (DN6~DN50).
- Pressure Rating: Common Class 3000/6000, Class 6000 for ultra-high pressure scenarios.
- Material: carbon steel, stainless steel, nickel-chromium alloy.
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The American socket weld 90° elbow is specially used in small diameter (nominal pipe size NPS≤2) piping systems. The socket welding process is used to change the fluid flow direction in the small diameter (NPS≤2) piping system to a 90° right angle, with excellent sealing and mechanical strength.
American socket weld 90° elbow
1. Molybdenum-containing stainless steel 316L (ASTM A403) is used to treat corrosive media (such as acids and alkalis). This type is widely used due to its excellent corrosion resistance.
2. Pre-welding treatment: To ensure the cleanliness of the inner wall of the pipeline, it is necessary to remove the scale in the pipeline to prevent pores or slag inclusions in the weld.
3. Clamp connection: The clamp process is preferred for high-pressure applications. This has good sealing and can reduce the resistance of the fluid in the pipeline.
4. Low temperature conditions: In order to prevent brittle fracture, low-temperature steel (such as ASTM A402 WPL6) can be used.
5. Welding parameters: Select matching welding materials according to the parent material (such as A105 welding rod for carbon steel), control the current, and avoid insufficient penetration or burn-through.
6. In applications in high temperature and high pressure environments, it is recommended to use nickel-based alloys (such as Monel 400) to ensure its heat resistance and stress corrosion resistance.
Materials and Standards
| Parameter | Carbon Steel (ASTM A105) | Stainless Steel (316L) | Low-Temp Steel (ASTM A420 WPL6) | Nickel Alloy (Monel 400) |
| Applicable Standard | ASME B16.11 12 | ASTM A403 23 | ASME B16.9 56 | ASTM B564 47 |
| Nominal Diameter (NPS) | 1/4″ – 2″ (DN6~DN50) 23 | 1/4″ – 2″ (DN6~DN50) 23 | 1/2″ – 2″ (DN15~DN50) 5 | 1/4″ – 2″ (DN6~DN50) 2 |
| Typical Wall Thickness | 3.91 mm (Sch40) 58 | 7.11 mm (Custom for High Pressure) 2 | 3.91 mm (Sch40) 58 | Custom (Seamless Process) 7 |
| Applicable Pressure Class | Class 3000 23 | Class 3000/6000 23 | Class 3000 56 | Class 6000 27 |
American socket weld 45° elbow Dimension
