Hengshui Yitong Metal Products Co., Ltd is professional corrugated culvert pipes
manufacturer, was founded in 1998, 600 employees. After 14 years growth, Hengshui
Yitong Metal Products Co., Ltd became the most comprehensive leading corrugated
culvert pipes manufacturer. we have more than 30 patents, and are the member unit
joined to formulate the state standard,.
Our main products includes 4 types culvert pipes and irregular-shaped pipes, annual