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Weather Resistance Steel Plate Q345gnhl

Product Details

Weather Resistance Steel Plate Q345gnh

Q345GNH Steel Plate Bridge Features: Traditional high-strength bridge steel not only has poor impact toughness, weldability and fatigue properties, but also cannot resist the corrosion of the atmosphere and marine environment. Therefore, the concept of High Performance Steel (HP) III has been proposed abroad. Q345GNH steel plate has a high strength, but its welding properties, low temperature toughness, especially corrosion resistance has also been greatly improved. Weathering steel is a low alloy steel between ordinary steel and stainless steel, weathering resistance is 2 to 8 times than ordinary steel. High performance weathering bridge steel can resist corrosion from industrial atmosphere, acid rain, marine atmosphere and seawater, and is suitable for uncoated use in inland and coastal bridges.

Weather Resistance Steel Plate Q345gnhl Specification


Carbon steel coil


AiSi, ASTM, bs, DIN, GB, JIS


0.75-300mm or as required


600-1500mm or as required


600-6000mm or as required

Model Number

Q235B,Q195B,A283,A285,GR.A,GR.B,GR,C,ST52,ST37,ST35,A36,SS400,SS540,S275JR,S355JR,S275J2H,Q345,Q345B,A516 ,GR.50/GR.60,GR.70,etc

Delivery Time


Coil Weight


Coil ID



Hot Rolled /Cold Rolled


30% TT/LC


Container and Bulk Ship

Weather Resistance Steel Plate Q345gnh chemical composition

Grade C Si Mn P S Cu Ti Re
Q345GNH ≤0.12 0.20-0.60 0.50-0.90 0.07-0.12 ≤0.035 0.25-0.50 ≤0.13 ≤0.15

Weather Resistance Steel Plate Q345gnhl physical properties

Grade Yield Strength (MPa) Ultimate Tensile Strength (MPa) Elongation at Break (%)
Q345GNH 345 440 22
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