P355GH pipes – 1.0473 boiler tubes EN 10028-2
P355GH is a high-strength unalloyed creep-resistant steel – for higher-loaded pressure vessels, boilers and piping at moderate temperatures.
Application & properties
P355GH is a high-strength unalloyed creep-resistant steel – for higher-loaded pressure vessels, boilers and piping at moderate temperatures.
- Highly loaded pressure vessels and steam boilers
- Piping for steam and water
- Plant and apparatus engineering
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 | 0.10–0.22 |
| Si | ≤ 0.60 |
| Mn | 1.10–1.70 |
| P | ≤ 0.025 |
| S | ≤ 0.010 |
| Mo | ≤ 0.08 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 (t ≤ 16 mm) | ≥ 355 MPa |
| Tensile strength Rm | 510–650 MPa |
| Elongation A | ≥ 20 % |
| Impact energy KV | ≥ 40 J |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10028-2, EN 10273 |
| ASME/ASTM equivalent | ~ ASTM A516 Gr. 70 |
| Material no. | 1.0473 |
| Short name / aka | Carbon steel · creep-resistant · higher-strength |
We supply P355GH 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 P355GH
What distinguishes P355GH from P265GH?
P355GH has a higher yield strength (355 vs. 265 MPa) for higher-loaded parts at a comparable service temperature (~400 °C).
Is P355GH weldable?
Yes, with suitable welding sequence and preheating if required.
Which dimensions and certificates does ROHRLINE supply for P355GH?
ROHRLINE supplies P355GH 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 P355GH 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
Bent tube runs that take up or give off heat
Pressure vessels, collecting and buffer vessels, separators and…
Special flanges, collars and pipe fittings to drawing and works…
Typical industries
Request P355GH?
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.