Jingye Huaxi Special Steel Group has successfully developed Q355ND medium and heavy steel plates, with specifications covering 12-50 mm in thickness and 2000-2500 mm in width. All performance indicators meet the requirements of GB/T1591-2018, with certain key properties exceeding those of comparable international products, marking an important breakthrough in low-alloy high-strength steel.

By adopting a medium-carbon and multi-element microalloying design concept together with optimized rolling processes, an excellent balance between strength and toughness was achieved. 

The product offers outstanding impact performance across a wide temperature range (-40°C to 500°C), good weldability, and formability, making it suitable for applications in construction, bridge and tunnel engineering, offshore platforms, energy equipment, and railway transportation.