On September 6, the first batch of ductile iron blades developed by China North Locomotive & Forging Co., Ltd. was commissioned by North China Alstom (Beijing) Electric Equipment Company and successfully delivered. Marking the locomotive company in Dalian to fill the gap in the field of technology, which entered the Alstom global supplier system. North Heavy Alstom (Beijing) Electrical Equipment Company is principally engaged in the design and manufacture of steam turbines and turbine generators. The blades installed on the steam turbine were all purchased from abroad before. Because of the complex structure and strict quality requirements, the testing standards are very harsh, and no defects are allowed in the magnetic particle inspection, ultrasonic flaw detection and ray flaw detection. In the ductile iron casting industry, This leaf casting difficulty in no way inferior to the satellite into space, Alstom has worked with many domestic manufacturers to conduct multiple tests failed. After 2 years of scientific and technological research, Dalian Locomotive Casting and Forging Branch constantly tried its best to improve its products. The products finally passed the inspection of European experts' inspection team. European experts believe that the quality of blade casting is impeccable and can completely replace foreign products. Localization.