Larsen steel sheet piles are also called U-shaped steel sheet piles. As a new type of building material, they can be used as soil retaining walls, water retaining walls, and sand retaining walls when building bridges and cofferdams, laying large pipelines, and excavation of temporary ditches; they can also be used as walls at docks and unloading sites. Protective walls, retaining walls, embankments, etc. play an important role in engineering. Larson steel sheet piles used as cofferdams are not only green and environmentally friendly, but also have fast construction speed, low construction costs, and good waterproof functions.