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Coupling 1 1/4" BSPT Class 3000 ASTM A105

Availability: on sale

Dispatched within: 24 hours

Gross price: €19.18

incl. 23% TAX, excl. shipping costs

Regular price:

19.18

Net price: €15.59

excl. 23% TAX, excl. shipping costs

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Product code: 10721CW

Description

Coupling 1 1/4" BSPT Class 3000 ASTM A105

Size: 1 1/4" (thread diameter: 39.0–39.5 mm)
Dimension D: 57 mm
Dimension W: 67 mm
Thread type: BSPT tapered thread (ISO 7 Rc)
Material: ASTM A105 carbon steel (properties comparable to S235JR, 1.0460, C22.8, P245GH, P265GH, P285GH)
Pressure class: Class 3000 (206 bar)
Excellent weldability
Applications: Industry, exported machinery, pressure systems, hydraulic installations, high-performance systems, central heating installations
3.1 material certificate available on request (free of charge)
Marking: Size, pressure class, material grade, heat number, and thread type stamped on each coupling
Complies with: PED 97/23/EC, PED 2014/68/EU, ASME Section II, ASTM A105
Origin: European Union

Alternative Name

Coupling 1 1/4" BSPT Class 3000 ASTM A105, High-Pressure BSPT Coupling, Female Threaded Coupling, Tapered Thread Coupling, Forged Steel Coupling, Carbon Steel Coupling

Information

The 1 1/4" BSPT Class 3000 ASTM A105 Coupling is a high-pressure threaded fitting designed for demanding industrial piping systems. It features female BSPT tapered threads on both ends, providing a secure, leak-tight connection suitable for pressure applications up to 206 bar.

Manufactured from ASTM A105 forged carbon steel, the coupling combines high mechanical strength with excellent weldability. Each fitting is permanently marked with its size, material grade, pressure class, heat number, and thread type, ensuring complete traceability and compliance with international standards.

Material

ASTM A105 is a forged carbon steel widely used for pressure piping components and threaded fittings operating at ambient and elevated temperatures. It offers excellent mechanical strength, good machinability, and outstanding weldability.

Equivalent or similar material grades include:

S235JR
1.0460
C22.8
P245GH
P265GH
P285GH

Advantages

BSPT tapered female threads
Pressure class: Class 3000 (206 bar)
Excellent weldability
High mechanical strength
Reliable leak-tight threaded connection
Manufactured from forged ASTM A105 steel
3.1 material certificate available on request

Marking

Each coupling is permanently marked with:

Size
Material grade
Heat number
Pressure class
Thread type

All markings comply with the applicable industry standards.

Standards

PED 97/23/EC
PED 2014/68/EU
ASME Section II
ASTM A105

Applications

Industrial installations, pressure systems, hydraulic systems, exported machinery, oil and gas installations, heating systems, and high-performance process piping.

We also offer BSPT carbon steel 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	1 1/4''
Thread Type – Connection 1	BSP / G / Rp / Rc Thread
Connection 2	1 1/4''
Thread Type – Connection 2	BSP / G / Rp / Rc Thread