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Socket Weld Reducing Coupling 3/4" × 1 1/4" ASTM A105 Class 3000

Mufa 3/4''- 1 1/4'' socket weld A105 kl.3000

Availability: on sale

Dispatched within: 24 hours

Gross price: €13.22

incl. 23% TAX, excl. shipping costs

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13.22

Net price: €10.74

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Vendor:

Product code: 105T

Description

Socket Weld Reducing Coupling 3/4" × 1 1/4" ASTM A105 Class 3000

Size: 3/4" × 1 1/4"
Dimension B2: 27.2–27.6 mm
Dimension B1: 42.7–43.1 mm
Material grade: ASTM A105 (equivalent to P245GH / P285GH)
High-pressure boiler-grade carbon steel
Socket Weld reducing coupling
Pressure class: Class 3000 (206 bar)
3.1 material certificate available on request (free of charge)
Socket Weld fitting manufactured according to ANSI B16.11
Applications: Industrial installations, steel industry, marine industry, refineries, boilers, high-pressure piping systems
Origin: European Union

Alternative Name

Socket Weld Reducing Coupling 3/4" × 1 1/4" ASTM A105 Class 3000, SW Reducing Coupling, High-Pressure Socket Weld Fitting, Forged Steel Socket Weld Coupling, Boiler Steel Coupling, Pipe Socket Reducer

Information

The 3/4" × 1 1/4" Socket Weld Reducing Coupling ASTM A105 Class 3000 belongs to the group of high-pressure Socket Weld fittings, where the pipe is inserted into the socket before welding. The welded socket creates a strong, leak-tight connection that ensures maximum safety and long service life in high-pressure piping systems.

The Socket Weld (SW) system provides a permanent welded joint and allows easy selection of fittings according to the required pressure rating. Each fitting is permanently marked with its size, material grade, heat number, and pressure class. All Socket Weld fittings are available with a 3.1 material certificate.

Advantages

No pipe beveling required before welding
Easy and reliable installation
Permanent leak-tight welded connection
Alternative to threaded fittings
High mechanical strength
Manufactured according to ANSI B16.11
Pressure class: Class 3000 (206 bar)
3.1 material certificate available on request

Material

ASTM A105 is a forged carbon steel widely used for pressure piping components and Socket Weld fittings. It provides excellent mechanical strength, good machinability, and excellent weldability, making it suitable for ambient and elevated-temperature pressure service.

Typical applications include oil and gas pipelines, petrochemical plants, power stations, pressure vessels, and industrial process systems.

Equivalent or similar material grades include:

1.0460
C22.8
P245GH
P265GH
P285GH

Marking

Each fitting is permanently marked with:

Size
Material grade
Heat number
Pressure class
Thread designation (where applicable)

All markings comply with the applicable industry standards.

Applications

Industrial installations, steel mills, marine industry, refineries, boilers, high-pressure piping systems, petrochemical plants, oil & gas industry, and power generation.

We also offer Socket Weld reducing couplings in many other sizes. If you have any questions, please contact us. Call +48 63 261 42 02 or email biuro@polberis.pl.

Learn more about our Socket Weld fittings here >>

Technical data

Coupling Type	Coupling
Material	Carbon Steel
Pressure	Pressure Range 101–250 bar
Connection 1	1 1/4''
Thread Type – Connection 1	Socket Weld (SW)
Connection 2	3/4''
Thread Type – Connection 2	Socket Weld (SW)