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BS3799 Stainless Steel Screwed Union A182 (F6, F429, F430)
Stainless Steel Screwed Union
**Product Type:**
Full coupling, Half coupling, Reducing coupling, Reducer insert, Union, 90° elbow, 45° elbow, Tee, Cross, Cap, Square head plug, Hex head plug, Round head plug, Hex head bushing, Reducing swage, Welding Boss, Mitre Boss, High Pressure Boss, Socket Reducing Insert.
**Size:**
1/2" to 4" (DN15~DN100)
**Range (Wall Thickness):**
3000LB to 9000LB
XS, Sch80, Sch160, XXS
**Standard:**
ASME/ANSI B16.11, MSS SP-79, MSS SP-83, MSS SP-95, MSS SP-114, JIS B2316, JIS B2302, etc.
**Material:**
Stainless steel, Duplex steel, Alloy steel, Carbon steel, Low-temperature steel, Nonferrous metal (Nickel alloy, Aluminum alloy, Titanium alloy, etc.)
**+ SOCKET WELD FITTINGS**
Socket weld fittings are commonly used in small bore piping systems (NPS 2 or smaller). These fittings are inserted into a recessed area of valves, flanges, or other fittings and joined using fillet-type seal welds. They offer high leakage integrity and structural strength, making them ideal for critical applications. Although fatigue resistance is lower than butt-welded joints due to the use of fillet welds and abrupt geometry, they still outperform most mechanical joining methods. SW fittings are widely used in high-pressure industrial processes.
**Types of Threaded Fittings by Class and Size**
| Description | Class Designation |
|-------------|-------------------|
| | 3000 | 6000 | 9000 |
| Elbows (45°, 90°), Tees, Crosses, Couplings, Half-Couplings, End or Pipe Caps | 1/2 - 4 | 1/2 - 2 | 1/2 - 2 |
| Pipe Size by Wall Thickness | SCH 80 / XS | SCH 160 | XXS |
*Note: Plugs and Bushings are not included in the classification. They may be used up to Class 6000 NPS.*
**+ THREADED FITTINGS**
Threaded joints are one of the oldest methods for connecting piping systems. Like socket weld fittings, they are primarily used for small pipe diameters (NPS 2 or smaller). Threaded connections provide a reliable and easy-to-install option for low to medium pressure applications.
**Types of Threaded Fittings by Class and Size**
| Description | Class Designation |
|-------------|-------------------|
| | 2000 | 3000 | 6000 |
| Elbows (45°, 90°), Tees, Crosses, Coupling, Half-Coupling, Cap | 1/2 - 4 | 1/2 - 2 | 1/2 - 2 |
| Pipe Wall | SCH 80 / XS | SCH 160 | XXS |
*Note: Plugs and Bushings are not identified. They may be used up to Class 6000.*
These fittings are essential components in various industries such as oil and gas, chemical processing, and power generation, where reliability, durability, and compliance with international standards are crucial. Whether it's for high-pressure environments or precision applications, the right fitting can make all the difference in performance and safety.