Steel Sheet Pile
Steel sheet pile is a type of steel with a locking mouth, which has sections such as straight plate, groove, and Z-shaped, and various sizes and interlocking forms. Common ones include Larsson style, Lakawana style, and so on. Its advantages are: high strength, easy to penetrate into hard soil layers; Construction can be carried out in deep water, and if necessary, inclined supports can be added to form a cage. Good waterproof performance; It can form various shapes of cofferdams as needed and can be reused multiple times, making it widely used.
Steel sheet pile products are divided into two types according to production process: cold-formed thin-walled steel sheet piles and hot-rolled steel sheet piles.
(1) There are two types of cold-formed steel sheet piles: non bite type cold-formed steel sheet piles (also known as channel plates) and bite type cold-formed steel sheet piles (divided into L-type, S-type, U-type, Z-type). Production process: Continuously roll forming using thinner sheets (typically 8mm~14mm in thickness) in a cold bending machine. Advantages: Low investment in the production line, low production costs, and flexible product sizing control. Disadvantages: The thickness of each part of the pile body is the same, and the cross-sectional size cannot be optimized, resulting in an increase in steel consumption. The shape of the locking part is difficult to control, and the connection is not tightly fastened and cannot stop water. The pile body is prone to tearing during use.
(2) Hot rolled steel sheet piles are mainly classified into several categories and dozens of specifications, such as U-shaped, Z-shaped, AS shaped, and H-shaped, in the world. The production, processing, and installation processes of Z-type and AS-type steel sheet piles are relatively complex, mainly used in Europe and America; U-shaped steel sheet piles are mainly used in China. Production process: Formed by high-temperature rolling from a section steel rolling mill. Advantages: Standardized size, superior performance, reasonable cross-section, high quality, and tight water resistance with locking bite.
