ST 52.3 seamless pipes are made from a low-alloy, high-strength carbon steel grade as per DIN 17121 / DIN 2391 standards. Known for their excellent mechanical properties, high tensile strength, and good weldability, these pipes are widely used in heavy-duty industrial applications.

Key Features

Seamless structure with no weak points
Excellent weldability and machinability
High load-bearing strength
Resistant to corrosion (with protective coating)
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Technical Specifications

Grade: ST 52.3 (also referred to as S355J2G3 in EN standards)
Type: Seamless (hot-finished or cold-drawn)
Tensile Strength: 490 – 630 MPa
Yield Strength: ≥ 355 MPa
Outer Diameter: 10 mm to 273 mm (custom sizes available)
Wall Thickness: 2 mm to 30 mm

Applications

Surface: Black, oiled, phosphated, or painted
End Finish: Plain, beveled, or threaded
Automotive and machine parts
Power plants and pressure vessels
Oil & gas and offshore structures

Delivery Options

Hydraulic and pneumatic cylinder pipes
Construction and building structures
Certification: Supplied with test certificates (EN 10204 3.1/3.2 as needed)

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