As the thickness and hardness of S235J0W, S355J0W weathering steel increase, the tendency to crack at the cutting edge increases. In order to prevent the S235J0W, S355J0W weathering steel from cutting cracks, preheating should be carried out before S235J0W, S355J0W weathering steel cutting. Special attention should be paid to preheating to make the entire S235J0W, S355J0W weathering steel interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole S235J0W, S355J0W weathering steel cannot be preheated, the partial preheating method can be used instead.
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Q355NHE grade is a weather-resistant structural steel used in construction, bridges, and railway vehicles. Q represents yield strength, NH represents weather resistance, and E represents quality grade (A, B, C, D, E) composition. Q355NHE is an atmospheric corrosion-resistant steel plate, also called weather-resistant steel plate. It has the properties of high-quality steel such as strength, ductility, forming, welding, abrasion, high temperature, and fatigue resistance.