Steel sheet piles are widely applied in foundation works, port construction, riverbank stabilization, and various infrastructure projects thanks to their strong load-bearing performance and reliable soil-retention capability. However, choosing the appropriate sheet pile is not simply a matter of availability—it requires a clear understanding of standard lengths and pile types, as different project conditions call for different specifications.
The length of sheet piles can be customized according to project requirements, depending on the design requirements and construction conditions. Generally, the length of sheet piles can range from a few meters to tens of meters. Below are some common sheet pile lengths and their applications:
Common Sheet Pile Lengths
1. Short Sheet Piles (3-6 meters)
Applications: Commonly used in shallow foundation engineering, temporary cofferdams, and small foundation pit support.
Features: Easy to transport and install, suitable for small projects and short-term use.
2. Medium-Length Sheet Piles (6-12 meters)
Applications: Suitable for general foundation engineering, riverbank protection, and medium-sized foundation pit support.
Features: Good applicability, meeting the needs of most civil engineering projects.
3. Long Sheet Piles (12-24 meters)
Applications: Widely used in large-scale projects such as port and wharf construction, deep foundation pit support, and dam reinforcement.
Features: Provides deeper support and higher stability, suitable for projects requiring greater support depth.
4. Extra-long steel sheet piles (24 meters and above)
Applications: Suitable for extremely deep foundation pit support, deep-water wharves, coastal protection projects, etc.
Features: Requires specialized construction equipment and technical support; provides effective support under extreme conditions.
Five Common Types of Steel Plates
Generally, circulating steel plates can be classified into several types based on their manufacturing methods and subsequent processing. This section introduces five main types used in industrial products and construction sites.
1. SPHC (SPH) Hot-Rolled Steel Plate
This material is also simply called HOT or black steel. It is a material rolled at a high temperature of 900°C to 1200°C, with a black oxide film (also known as oxide scale) covering its surface. This material has a wide range of applications and is suitable for bending and deep drawing processes.
Uses, Types, and Characteristics of Rolled Steel Plates: SPHC (Hot-Rolled Steel Plate), SPCC (Cold-Rolled Steel Plate)
2. SPHC-P (SPHC) Hot-Rolled Steel Plate
Also known as pickled steel plate, this material is obtained by removing the oxide film from the surface of hot-rolled steel plates using a pickling method. SPHC can refer to both black steel and pickled steel, so when specifying the material, pay attention to whether it includes "P" or indicates that it has undergone pickling. Its properties are the same as black steel, and it is mostly used in stamping and other processing processes.
3. SPCC Cold-Rolled Steel Sheet
Also known as rolled steel, cold-rolled steel, or smooth sheet, it is made by further cold-rolling hot-rolled steel sheet. It has a smooth, glossy surface; it is soft and has excellent machinability. Because it lacks an oxide film, it rusts very easily. Oiling is required for protection during distribution and processing. When used as a product, rust-preventive treatments such as spraying are necessary before and after processing.
4. SECC Electro-galvanized Steel Sheet
Also known as galvanized steel sheet, it is a cold-rolled steel sheet that has undergone electro-galvanizing. It is one of the most widely used surface-treated steel sheets. The galvanizing treatment gives it good rust resistance and a beautiful, glossy appearance. Furthermore, it is easy to process and has excellent decorative properties, often used for covers and other parts in machinery.
5. SGCC Hot-Dip Galvanized Steel Sheet
This type of steel sheet is often called sheet metal. It is a cold-rolled steel sheet that has undergone hot-dip galvanizing. Due to its thicker coating, it has higher corrosion resistance than electro-galvanized steel. Therefore, it is often used in outdoor building materials.
