Differences between P355GH steel and P355NH steel

Both P355GH steel and P355NH steel are European standard pressure vessel plate. Do you know the differences between them?

Difference in element content

P355GH steel composition(%)

P355NH steel composition(%)

Small difference in category

P355GH steel is a non-alloy steel with specified elevated temperature properties. It is designed in EN 10028-2: 2009 flat products made of steels for pressure purposes standard. P355GH steel is used worldwide by fabricators of welded pressure vessels, industrial boilers and heat exchangers and is engineered to work well in elevated temperature service.

P355NH steel is normalized weldable fine grain steel flats under EN 10028-3: 2009 standard. P355NH steel plate is widely used in petroleum, chemical, power station, boiler and other industries to make reactors, heat exchangers, separators, SPHErical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, Equipment and components such as high-pressure water pipes of hydropower stations and turbine volutes.

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