Socket weld and threaded fittings. Weldolets and Sockolets for branch connections. 1/2" - 4" (DN15 - DN100), Class 2000 - 9000LB.
JIAJI FORGING manufactures a comprehensive range of forged pipe fittings including ASME B16.11 socket weld and threaded fittings (elbows, tees, caps, couplings, unions, etc.) and MSS-SP-97 Olets (Weldolets, Sockolets, Threadolets) for branch connections. Our fittings are used in oil & gas, petrochemical, power generation, and industrial piping systems worldwide.
MSS-SP-97 Standard | 1/2" - 24" | SCH10S - SCHXXS | For high-pressure branch connections in piping systems
Connection: Butt Weld (BW)
Standard: MSS-SP-97
Size Range: 1/2" - 24" (DN15 - DN600)
Schedule: SCH10S - SCHXXS
Weldolets provide a strong, leak-resistant branch connection by welding the olets directly to the run pipe. Preferred for high-pressure and high-temperature applications in oil, gas, and petrochemical piping.
Connection: Socket Weld (SW)
Standard: MSS-SP-97
Size Range: 1/2" - 24" (DN15 - DN600)
Schedule: SCH10S - SCHXXS
Sockolets feature a socket weld connection for the branch outlet. Suitable for small-to-medium size branch connections where socket weld is preferred or required by project specification.
Connection: Threaded (TH)
Standard: MSS-SP-97
Size Range: 1/2" - 24" (DN15 - DN600)
Schedule: SCH10S - SCHXXS
Threadolets provide threaded branch connections where welding is not permitted. Typically used for instrument connections, sampling lines, and low-pressure auxiliary piping.
1/2" - 4" (DN15 - DN100) | Class 2000 / 3000 / 6000 / 9000LB | SW (Socket Weld) and TH (Threaded) connections
| Product | Connection | Size Range | Pressure Class | Standard | Materials |
|---|---|---|---|---|---|
| Elbow 90 Degree | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Elbow 45 Degree | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Tee | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Cross | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Cap | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Coupling (Full) | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Half Coupling | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Union | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Hex Head Plug | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Hex Head Bushing | SW / TH | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Nipple | BW / TH / PE | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
| Swaged Nipple (CON/ECC) | BW / TH / PE | 1/2" - 4" | 2000# - 9000# | ASME B16.11 | SS304/316L, Duplex, Alloy |
Fitting has a socket bore. Pipe is inserted into socket and fillet welded. Used for small bore, high pressure applications. Better pressure containment than threaded.
Internal NPT/BSPT threads. No welding required. Used for low-pressure, temporary, or no-weld applications. Not recommended for severe cyclic conditions.
Beveled ends for butt welding to pipe. Seamless bore with smooth flow path. Preferred for high-pressure and high-temperature applications.
Threaded and socket weld fittings are rated by pressure class (2000#, 3000#, 6000#, 9000#) which corresponds to different maximum working pressures at various temperatures.
| Class | Threaded (NPT) Max WP | Socket Weld Max WP | Typical Application |
|---|---|---|---|
| 2000# | ~1000 psi | ~1000 psi | Low pressure, general service |
| 3000# | ~2000 psi | ~2000 psi | Medium pressure, process piping |
| 6000# | ~3000 psi | ~6000 psi | High pressure, oil & gas |
| 9000# | ~N/A | ~9000 psi | Very high pressure |
Pressure ratings per ASME B16.11 are for reference at room temperature. Actual working pressure depends on temperature, material, and service conditions. Always verify with project engineering specifications.
Send us your fitting requirements with quantity, material, size, pressure class, and standard. Our Shanghai team will provide competitive pricing within 4 hours.
