Steel plant business: With the economic and social development, the rail traffic in steel plants increases. According to the specifications of the steel plants, the crossover alloy steel turnout no. 60-7 was developed, solving the problem of the high-manganese steel turnout’s fast abrasion. At the same time the single turnout no. 50-7 and 50-9 have entered parts of the iron and steel enterprises, for example the Hangzhou Iron & Steel Group Company etc.