Large high-end castings researched and developed by NHI are widely used in various industries, including heavy industrial equipment, mining experiment, smelting iron and steel mould, machine tools. NHI supply accessories for Shanghai Bao Steel Co., Ltd., Qigihar Machine Tool Co., Ltd., Changchun Chaoyang experimental instrument factory, Dalian Huarui Heavy Industry Group Co., Ltd.,etc.
 
Main products includes heavy section ductile iron castings, large cast iron with unit weight more than 20 tons, high alloy cast iron(including wear-resistant, corrosion-resistant, low temperature resistance, high temperature resistance).
 
Taking iron and steel research institute as technical support, giving full play to the company after the integration of the advantage of equipment, NHI can supply large nodular cast iron with maximum thickness of 800mm and maximum unit weight of 50 tons, In the industry - leading level; the lowest temperature of low temperature resistance castings is -196℃, in the domestic-leading level; maximum working pressure of pressure tight castings reach 20MPa, far ahead of peers; unit weight of the largest casting is 200 tons.