P355 grade steel is a high quality structural material with excellent mechanical properties. P355 steel is mild, fine grain structural steel that is often used in pressure vessels and boilers. Its high strength and corrosion resistance make it the ideal choice for use in demanding industrial applications. Subgrades of P355 grade steel P355 grade … Continue reading P355NL1, P355NL2, P355NH, P355GH, 1.0565, 1.0566, 1.0473 – mild, structural steel