EN 10216-3 P355NL1 / 1.0566 Fine-Grain Seamless Steel Pipes for Low-Temperature Pressure Service

Seamless Steel Pipes 1.0566 / P355NL1, EN 10216-3

Seamless steel pipes 1.0566 (P355NL1) are low-alloy structural steel designed for pressure applications at low temperatures. This material offers high impact toughness, excellent weldability, and load resistance, making it ideal for use in the energy, mechanical engineering, and petrochemical industries.

Key Material Characteristics

• High strength – ensures structural reliability under pressure
• Excellent weldability – easily joins with all types of welding
• Impact toughness at low temperatures – prevents brittle fractures
• Corrosion resistance – enhanced durability in aggressive environments
• Longevity – resistant to mechanical and thermal loads

Applications

• Energy sector – pipelines for steam and water systems
• Oil and gas industry – pipes for transporting oil and gas
• Boiler and thermal equipment – steam pipelines, heat exchangers
• Mechanical engineering – structures operating under high pressure
• Chemical industry – pipes for chemical and aggressive media

Chemical Composition

The optimized balance of carbon, manganese, and alloying elements ensures high mechanical strength and impact toughness.

Mechanical Properties

• Yield strength: ≥ 355 MPa
• Tensile strength: 490-630 MPa
• Elongation: ≥ 22%
• Impact toughness (KV): ≥ 27 J (at -50°C)
• Hardness: ≤ 250 HB

Advantages of Seamless Pipes 1.0566 / P355NL1

✅ High strength and reliability – withstands high pressure and loads
✅ Excellent weldability – easy joining without thermal cracks
✅ Low-temperature resistance – prevents brittle failure
✅ Durability and wear resistance – maintains properties in harsh operating conditions
✅ Wide range of applications – suitable for various industrial sectors

Seamless steel pipes 1.0566 (P355NL1, EN 10216-3) are the ideal material for systems operating under high pressure and low temperatures.

Supply forms of boiler seamless pipes EN 10216-3