P355NL2 pipes – 1.1106 pressure pipes EN 10216-3
P355NL2 is a low-temperature-tough fine-grain steel for pressure applications at low temperatures – with guaranteed impact toughness down to −50 °C. ROHRLINE supplies P355NL2 pipes and tubes to EN 10216-3 with EN 10204 3.1 inspection certificates – worldwide.
Application & properties
P355NL2 is a low-temperature-tough fine-grain steel for pressure applications at low temperatures – with guaranteed impact toughness down to −50 °C.
- Pressure vessels and piping at low temperatures
- Refrigeration and low-temperature plants
- LPG and process plants
Tell us the medium, temperature and pressure – we will check the grade with you.
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| C | ≤ 0.18 |
| Si | ≤ 0.50 |
| Mn | 0.90–1.70 |
| P | ≤ 0.020 |
| S | ≤ 0.010 |
| Ni | ≤ 0.50 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 (t ≤ 16 mm) | ≥ 355 MPa |
| Tensile strength Rm | 490–650 MPa |
| Elongation A | ≥ 22 % |
| Impact energy KV (−50 °C) | ≥ 40 J |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10028-3, EN 10216-3 |
| ASME/ASTM equivalent | ~ ASTM A333 / A537 |
| Material no. | 1.1106 |
| Short name / aka | Fine-grain structural steel · low temperature |
We supply P355NL2 as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Supply programme & machining
| Item | Details |
|---|---|
| Dimensions (pipe) | Programme range: outside Ø 10.2 to 2,032 mm · DN 6 to DN 2000 · all standard wall thicknesses; available sizes depend on grade and standard |
| As flange & fitting | DN 10 to DN 1200 · PN 6 to PN 400 · Class 150 to Class 2500 to ASME B16.5 (to NPS 24), above that ASME B16.47 to Class 900 |
| Lengths & cutting | Mill lengths, sawn fixed lengths and fitting pieces from 0.1 to 12 m – sawn and bevelled |
| Minimum quantity | From a single item – from one fitting piece to the complete piping system |
| Availability | Common grades and sizes available at short notice, special sizes procured per project |
| Lead time | Standard sizes usually 3–5 working days; the binding date is confirmed with the quote |
| Machining | Sawing and bevelling, roll grooving for grooved couplings, threading to EN 10226, drilling, facing, bending with special radii |
| Surface | Blasting Sa 2½, primer and top coat, powder coating in RAL shades, galvanising to EN ISO 1461, PE coating to DIN 30670 |
| Certificates | Mill certificate 2.2, inspection certificate 3.1 to EN 10204 (standard with machining), 3.2 with notified body on request |
| Testing | Non-destructive testing by ultrasound, eddy current and X-ray, pressure test report on request |
These figures describe our supply programme. Which size is actually available in this grade is clarified with your enquiry – you usually receive the quote the same day.
We clarify availability, price and inspection certificate with your enquiry.
Frequently asked questions about P355NL2
What does NL2 mean in P355NL2?
N stands for normalised, L for low-temperature toughness and 2 for the higher toughness class (impact energy at −50 °C).
When to use P355NL2?
For pressurised applications at low service temperatures to avoid brittle fracture.
Which dimensions and certificates does ROHRLINE supply for P355NL2?
ROHRLINE supplies P355NL2 in the following range: Programme range: outside Ø 10.2 to 2,032 mm · DN 6 to DN 2000 · all standard wall thicknesses; available sizes depend on grade and standard. Documentation: Mill certificate 2.2, inspection certificate 3.1 to EN 10204 (standard with machining), 3.2 with notified body on request. Delivery worldwide; the binding date is confirmed with the quotation.
Components in P355NL2 pipes
We supply these ready-to-install parts in this grade – to your drawing, tested and documented.
Pipe spools (prefabricated piping assemblies) are piping sections…
Headers bring steam, water or gas together and distribute it again. We…
The plate in which the boiler tubes end
Pressure vessels, collecting and buffer vessels, separators and…
Special flanges, collars and pipe fittings to drawing and works…
Typical industries
Request P355NL2?
Grade, standard, size, pressure rating and quantity are enough – on request with an EN 10204 3.1 / 3.2 mill certificate. Your quote usually the same day.
All data are typical values per the relevant EN standards for first orientation – without warranty. The applicable standard and the mill certificate of the delivery are decisive.