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Socket Weld Coupling 3/4" ASTM A350 LF2 Class 3000

Availability: on sale

Dispatched within: 24 hours

Gross price: €6.42

incl. 23% TAX, excl. shipping costs

Regular price:

6.42

Net price: €5.22

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Vendor: LAME

Product code: 12715B

Description

Socket Weld Coupling 3/4" ASTM A350 LF2 Class 3000

Size: 3/4"
Material grade: ASTM A350 LF2 (equivalent to P355GH / P355NH)
Operating temperature: -46°C to +350°C
Suitable for welding
Socket Weld fitting manufactured according to ANSI B16.11
Pressure class: Class 3000 (206 bar)
3.1 material certificate available on request (free of charge)
Applications: Industrial installations, steel industry, marine industry, refineries, boilers
Origin: European Union

Alternative Name

Socket Weld Coupling 3/4" ASTM A350 LF2 Class 3000, SW Coupling, High-Pressure Socket Weld Coupling, Socket Weld Fitting, Boiler Steel Coupling, Forged Steel Coupling, Pipe Socket Coupling

Information

The 3/4" Socket Weld Coupling ASTM A350 LF2 Class 3000 belongs to the group of high-pressure Socket Weld fittings, where the pipe is inserted into a recessed socket before welding. Once welded, the socket creates a strong, leak-tight connection, ensuring maximum safety and durability in pressure piping systems.

The Socket Weld (SW) design provides a permanent welded joint and makes selecting fittings according to pressure class straightforward. 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
Quick and easy installation
Permanent leak-tight welded joint
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 A350 LF2 is a low-alloy forged steel developed for low-temperature service. It is widely used for forged fittings, flanges, valves, and pressure piping components operating in cold environments. The material offers excellent weldability, toughness, and impact resistance.

Suitable for service temperatures down to -50°F (LF2) and up to +350°C.

Equivalent or similar material grades include:

P355GH
P355NH
S355J2 (1.0570)
ASTM A333 Grade 2

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, petrochemical plants, pressure piping systems, and energy facilities.

We also offer Socket Weld 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 couplings here >>

Technical data

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