American socket weld x threaded reducing cross
- NPS ：1/8“ to 4” (DN6-DN100)
- Reduced size combination limit: Maximum allowable 2-step difference
- Threaded end: 2000/3000/6000LB
- Socket weld end: 3000/6000/9000LB
- Standards: A105, F304/F316/F51, WP11/WP22
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American socket weld × threaded reducing cross The central interface uses socket weld connection, while the branch interface uses NPT threaded connection, specifically designed for small-diameter pipeline systems (DN ≤ 100 mm). This pipe fitting is formed through forging, combining the high sealing performance of socket weld with the convenience of threaded connection, and is widely used in high-pressure applications such as petroleum and chemical industries. Its pressure-temperature rating must be verified in accordance with ASME B16.11 Appendix C, and the size difference between the two sizes must comply with the specified limits.
American socket weld x threaded reducing cross
American socket weld x threaded reducing cross Thickness
| NPS | DN | Pressure at socket weld end | Thread end pressure | 3000LB Thickness(mm) | 6000LB Thickness(mm) | 9000LB Thickness(mm) |
| 1/8″ | 6 | 3000/6000/9000 | 2000/3000/6000 | 1.73 | 2.41 | 3.02 |
| 1/4″ | 8 | 3000/6000/9000 | 2000/3000/6000 | 2.24 | 3.02 | 3.91 |
| 1/2″ | 15 | 3000/6000/9000 | 2000/3000/6000 | 3.73(SCH80) | 5.54(XS) | 7.62 |
| 1″ | 25 | 3000/6000/9000 | 3000/6000 | 5.69(SCH80) | 7.92(SCH160) | 11.13(XXS) |
| 2″ | 50 | 3000/6000 | Not recommended for threads | 6.93(SCH80) | 11.13(SCH160) | – |
| 4″ | 100 | 3000/6000 | Not recommended for threads | 13.49(SCH160) | 17.12(XXS) | – |
socket weld x threaded reducing cross Advantages
1. The weld penetration depth of the socket weld end is ≥2.5mm, and the threaded end uses PTFE sealing tape, with a leakage rate of <0.001%.
2. Installation efficiency is 40% higher than that of fully welded solutions, allowing for an angle deviation of ±5°, which facilitates maintenance and disassembly.
socket weld x threaded reducing cross Combination Rules
1. Size Difference Restrictions:
DN ≤ 50 mm: Maximum 2 size differences allowed (e.g., 2“ × 1”)
DN > 50 mm: Only 1 size difference allowed (e.g., 4“ × 3”)
2. Pressure Matching: After combining different diameters, the overall pressure rating is determined based on the lowest port.
3. Common Combination Examples
Main diameter: 2“, branch diameter: 1.5”
Main diameter: 3“, branch diameter: 2”
Main diameter: 1“, branch diameter: 3/4”