Hengshui Yitong Pipe Industry Co.,ltd is the largest corrugated steel culvert pipe manufacture of China established in 1998. As a first grade enterprise providing the most well-found product line and systematic service, it plays an important role in the corrugated steel industry in China and abroad. Yitong company has more than 600 employees, including 96 engineering technicians and 20 senior engineers. The teams of product development, production management and quality control are top of the line. Yitong also has an independent laboratory and a specialized quality inspection system. Yitong company is capable of producing 100,000 tons of corrugated steel culvert annually. And it has an annual sales revenue of 1.2 billion yuan and export volume of 200 million yuan. Yitong has advanced production equipment of corrugated steel culvert and the most advanced production line of spiral corrugated steel pipe culvert in the world. Yitong’s product can be divided into integral type and assembled type according to the structure. The section shapes of products are multiple, such as round, oval, horseshoe, arch, and etc. The diameter is from 0.3m to 24m and the thickness is from 1.6-10mm. The culvert pipe can meet the requirements of structures with filling height of 0.5-130m. Our products are widely used in highway and railway culverts, bridges, tunnels, channels, water conservancy, flood discharge pipes, municipal drainage pipes, military applications and old structure reinforcement. We maintain excellent cooperation with business partners in many countries. We have participated in the construction of an important national defense projects in Tajikistan,a key water conservancy projects in Laos, a highway construction in the Far East of Russia, design and construction of many mine projects in South America, etc.