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Threadolet 1/2'' - 3/4'' × 36'' NPT A105 Class 3000
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Description
Threadolet 1/2'' - 3/4'' × 36'' NPT A105 Class 3000
- Size: 1/2'' - 3/4'' × 36''
- Thread: 1/2'' NPT
- Connects a 1/2'' NPT threaded fitting or valve to a 3/4''–36'' pipe
- Thread type: NPT (tapered)
- Material: ASTM A105 carbon steel (equivalent to P245GH, P265GH, P285GH)
- Pressure class: Class 3000 (206 bar)
- Excellent weldability
- Dimensions according to MSS SP-97
- Applications: High-pressure industrial installations, high-temperature systems, pressure vessels, central heating systems
- 3.1 material certificate available on request (free of charge)
- Origin: European Union

Alternative Name: Threadolet 1/2'' - 3/4'' × 36'' NPT A105 Class 3000, threaded branch outlet, welding branch fitting, Threadolet, Weldolet, threaded O-let, Screwbranch, branch connection fitting.
Information
Threadolet 1/2'' - 3/4'' × 36'' NPT A105 Class 3000 belongs to the family of steel branch outlet fittings (O-lets), including Weldolet, Threadolet, Sockolet, Boss, Couplet, and Latrolet. These fittings provide an alternative method of making branch connections in piping systems.
O-lets are pre-shaped to match the curvature of the run pipe, allowing easy welding to the pipe while creating a strong and reliable branch connection. They provide excellent flow characteristics and an optimized stress distribution. Branch outlets are commonly used in high-pressure and high-temperature applications.
Other Available Options
- Pressure classes: Class 3000, Class 6000
- Socket Weld (SW) Couplets
- Threaded Couplets: NPT, BSPP, BSPT
- Material: ASTM A105 carbon steel
- Material: ASTM A350 LF2 Class 1 low-temperature carbon steel (down to -50°C)
- Material: Stainless steel 304, SA182 F304/L, TP304, TP304L, 316, SA182 F316L, F321, F347
- Threaded
- Socket Weld (SW)
- 3.1 material certificate available
- Origin: European Union
Material
ASTM A105 is a carbon steel grade widely used for piping components and forged fittings operating in pressure systems at ambient and elevated temperatures. It offers excellent weldability and reliable mechanical properties.
Applications: Oil and gas pipelines, petrochemical plants, power stations, pressure vessels, and industrial process systems.
Comparable steel grades: 1.0460, C22.8, P245GH, P265GH, P285GH.
Each fitting is permanently marked with its size, material grade, heat number, and pressure class.
Advantages
- Suitable for high-pressure applications
- Excellent weldability
- Optimized stress distribution
- Reliable branch connection
- High mechanical strength
- Long service life
Applications
Oil and gas industry, petrochemical plants, power generation, pressure vessels, industrial piping systems, central heating systems, and high-temperature process installations.
We also offer Threadolets, Weldolets, Sockolets, Bosses, Couplets, and other branch outlet fittings in many sizes and materials. If you have any questions, please contact us. Call +48 63 261 42 02 or email biuro@polberis.pl.
Learn more about branch outlet fittings here >>
Technical data
| Branch Fitting Type | Threadolet |
| Material | Carbon Steel |
| Size | 1/2'' |
| Connection Type | NPT Thread |
Safety
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