GL FH40 is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties. GL FH40 steel can be used in the manufacture of the ocean ship's hull structure whose weight is above 10000 tons.
http://www.bsteelplate.com/Shipbuilding-steel/GL/GL-FH40-steel.html?li
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