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P275NL2 steel plate is normalizing weldable fine grain steel, European standard steel plate, non-alloyed steel, the corresponding number is 1.1104.
link:https://www.chinasteelcompany.com/pressure-vessel-steel-plates/european-standard-boiler-pressure-vessel/p275nl2-pressure-vessel-plate.html
P275NL2 Pressure Vessel Plate