Steel sheet piles are categorized by production process into cold-bent and hot-rolled types. Cold-bending involves continuously cold-bending steel strips to form various shapes, such as U-shapes. Hot-rolling involves welding and hot-rolling to produce sheet piles. Hot-rolling is a more advanced process than cold-bending, resulting in a tight, water-tight interlocking joint. Cold-bending is also relatively inexpensive and offers a higher cost-performance ratio.

By shape, sheet piles can be categorized as U-, Z-, L-, S-, and straight. U-shaped sheet piles, also known as Larsen sheet piles, are the most common.
Larsen piles are easy to produce, offer guaranteed performance, high rigidity, strength, and reusability, making them highly sought after in the market. The locking ends of the Z-shaped steel sheet pile are symmetrically distributed on both sides of the central axis, and the web is continuous, which has a higher moment of inertia, thereby increasing the stiffness of the pile and reducing deformation. Due to its unique cross-sectional shape, it exhibits better water-stopping and corrosion resistance.

Larsen steel sheet piles are U-shaped steel sheet piles with locking tabs at both ends, allowing them to interlock together to form a single sheet pile wall. They offer excellent sealing, high rigidity, and strength, providing both soil and water retention, strong support capabilities, and reliable stability. They require the appropriate type of pile driver to be selected based on soil conditions and pile size.

Regular steel sheet piles are similar to channel steel in a U-shape and lack locking tabs at both ends. While they retain soil, they lack strong water retention. The thickness of the steel is not strong, and they are prone to deformation after use, requiring correction and maintenance. They can be used for support in locations with less stringent environmental requirements. They are inexpensive, can be used in large quantities, are easy to install, and can be driven with an excavator.

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