China's largest and most advanced pure steel railway frog production line was officially put into operation.

4月11日，China's largest and most advanced pure steel railway frog production line was officially put into operation at Zhongtieshan Bridge Group Co., Ltd.(hereinafter referred to as Zhongtieshan Bridge) located in Shanhaiguan District, Qinhuangdao City, Hebei Province ，投产后年生产能力将达到15000颗高锰钢辙叉，较该生产线投产前产能提高20%，将进一步提升市场占有率，环保达到国家环保绩效B级以上水平。

Pure steel, also known as high manganese steel, contains more manganese and carbon than ordinary steel. It has strict requirements for the control of inclusions including non-metals in the steel, so it has higher hardness and toughness. Under severe impact or contact stress, the surface of the pure steel will harden rapidly, while the core still maintains extremely strong toughness. This characteristic of being hard on the outside and tough on the inside, both wear and impact resistance can ensure the safety of train operation to the greatest extent possible.

Frog refers to equipment that allows a wheel to pass from one rail to another. It requires materials that are both wear and impact resistant, and pure steel just meets the requirements.

Experts said that the new production line will change the current traditional and backward smelting process and production methods of domestic high-manganese steel integral cast frog in one fell swoop, reverse the situation that China lags behind the world's advanced standards and specifications in terms of high-manganese steel integral cast frog standards and specifications, and boost China's high-manganese steel integral cast frog "goes out".