The project is located in Yongnian County, Handan, Hebei Province, entrusted by Hebei Yong Yang Special Steel Group Co., Ltd., our company undertook the pile foundation construction of this project. The foundation is made of concrete infill piles, with a total of 174 concrete bored piles of 800mm in diameter.
The pile diameter of this project is 800mm, and the end of the pile enters into the bearing layer of the moderately weathered diorite not less than 1.6m, the concrete strength grade is C40, the impermeability is P8, the main reinforcement of the reinforcement cage is 
16, the reinforcement is 14, and the spiral hoop is 
8. The project started on October 5, 2021 and ended on January 10, 2022, lasting for 58 calendar days.
During the construction process, our project department strictly carried out the relevant specification standards and the owner's requirements, organized strictly, managed scientifically, constructed carefully, and fully accepted the management and supervision of the owner, supervising engineers and administrative departments. The overall quality of the project was accepted. The safety production achieved "zero" accident, and the environmental protection indexes such as sludge disposal and noise impact reached the national and local standards without general environmental pollution accidents, which was highly recognized by the owner and the supervisor.
