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High-Pressure Threaded / Socket Weld Fittings Socket Weld Fittings
Socket Weld Reducing Coupling
- Standard
- ASME B16.11, MSS-SP-79
- Pressure class
- 3000 LB / 6000 LB
- Connection Type
- Socket Weld
- Material Options
- ASTM A182 F304, F304L, F316, F316L
- Size Range
- 1/8″ – 4″
- Material and standard are confirmed in writing in the quote
- Reply with stock status and lead time
Description
About the product

Socket Weld Reducing Couplings are high-pressure pipe fittings used to join pipes of different diameters safely and in a leak-tight manner. Thanks to the socket weld connection, they provide strong mechanical strength and deliver reliable performance, especially under high-pressure, high-temperature and vibrating operating conditions.
Socket weld reducing couplings, which can be manufactured from stainless steel, carbon steel and alloy steel materials, are widely used in petrochemical, chemical plants, power plants, marine, hydraulic systems, and gas and liquid transfer lines.
Features
- Suitable for high-pressure applications.
- Provides a reliable and leak-tight weld connection.
- Allows the connection of different pipe diameters.
- Offers ease of installation in tight spaces thanks to its compact design.
- Provides high resistance to corrosion and wear.
- Has a long service life.
Applications
Socket Weld Reducing Couplings are used in all industrial facilities where a transition is needed between pipes with different nominal diameters. Their stainless steel versions in particular deliver high performance in corrosive environments, reducing maintenance costs and increasing system safety.
Dimensions
Size chart
Sizes are in mm and weights in kg/piece. Just enter the size you need in the quote form.
| Nom. Pipe Size | 3000 LB | 6000 LB | B1 | B2 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| D | H | J | L | D | H | J | L | |||
| 1/4″x1/8″ | 6.9 | 22.2 | 10.5 | 27.5 | 4.0 | 23.8 | 10.5 | 27.5 | 14.3 | 10.9 |
| 3/8″x1/8″ | 6.9 | 26.1 | 10.5 | 28.5 | 4.0 | 28.1 | 10.5 | 28.5 | 17.7 | 10.9 |
| 3/8″x1/4″ | 9.3 | 26.1 | 10.5 | 28.5 | 6.4 | 28.1 | 10.5 | 28.5 | 17.7 | 14.3 |
| 1/2″x1/8″ | 6.9 | 31.6 | 12.5 | 34.5 | 4.0 | 34.2 | 12.5 | 34.5 | 21.9 | 10.9 |
| 1/2″x1/4″ | 9.3 | 31.6 | 12.5 | 34.5 | 6.4 | 34.2 | 12.5 | 34.5 | 21.9 | 14.3 |
| 1/2″x3/8″ | 12.6 | 31.6 | 12.5 | 34.5 | 9.2 | 34.2 | 12.5 | 34.5 | 21.9 | 17.7 |
| 3/4″x1/8″ | 6.9 | 37.4 | 14.0 | 37.5 | 4.0 | 41.6 | 14.0 | 37.5 | 27.3 | 10.9 |
| 3/4″x1/4″ | 9.3 | 37.4 | 14.0 | 37.5 | 6.4 | 41.6 | 14.0 | 37.5 | 27.3 | 14.3 |
| 3/4″x3/8″ | 12.6 | 37.4 | 14.0 | 37.5 | 9.2 | 41.6 | 14.0 | 37.5 | 27.3 | 17.7 |
| 3/4″x1/2″ | 15.8 | 37.4 | 14.0 | 37.5 | 11.8 | 41.6 | 14.0 | 37.5 | 27.3 | 21.9 |
| 1″x1/8″ | 6.9 | 45.7 | 15.0 | 43.0 | 4.0 | 50.2 | 15.0 | 43.0 | 34.0 | 10.9 |
| 1″x1/4″ | 9.3 | 45.7 | 15.0 | 43.0 | 6.4 | 50.2 | 15.0 | 43.0 | 34.0 | 14.3 |
| 1″x3/8″ | 12.6 | 45.7 | 15.0 | 43.0 | 9.2 | 50.2 | 15.0 | 43.0 | 34.0 | 17.7 |
| 1″x1/2″ | 15.8 | 45.7 | 15.0 | 43.0 | 11.8 | 50.2 | 15.0 | 43.0 | 34.0 | 21.9 |
| 1″x3/4″ | 21.0 | 45.7 | 15.0 | 43.0 | 15.6 | 50.2 | 15.0 | 43.0 | 34.0 | 27.3 |
Quote
Request a quote for Socket Weld Reducing Coupling
Send the size, material grade and quantity, and we will reply with stock status, price and lead time.
Details that speed up your quote
- Product code or name, size (DN / inch)
- Material grade: 304, 304L, 316 or 316L
- Standard / pressure class (PN, LB, SCH)
- Quantity and requested delivery location