Pie-shaped forgings are mainly used in petrochemical industry, pressure pipelines, pressure vessels, heavy machinery and equipment, mold industry and other fields. The maximum tonnage of pie-shaped forgings can reach 6 tons, and the maximum diameter can reach φ2500mm. Materials used include 25#, 35#, 45#, 16Mn, 20MnMo, 1Cr5Mo, 16MnD, 09MnNiD and other brands of carbon steel, alloy steel, low temperature low alloy steel, stainless steel, dual phase steel, etc. The material standards involve national standard, US standard, standards of Ministry of Energy, etc. The product can choose different materials and processes according to the applicable place and performance requirements to meet various environments such as low temperature, high pressure, corrosive medium and so on. Representative products include various tube plates, flat covers, flange covers, tire mold bases, side plates, etc., herringbone gear for machine tools, idlers, eccentric bodies, impellers for steam turbines, etc.