Understanding the allowable stress for sheet piles is crucial for ensuring their structural integrity and performance in demanding environments.

This article starts with the structural characteristics of commonly used composite steel sheet piles, focuses on a comparative analysis of HZ/AZ composite steel sheet piles, steel pipe sheet piles and box composite piles, and combines specific engineering cases to explain the factors that should be considered in the practical application of composite steel sheet piles. 

Electric resistance welded (ERW) black steel pipes refers to the process of joining untreated black steel pipes using high-frequency resistance welding technology.

Casing  pipe strength is closely related to the mechanical properties of the octg casing material, including yield strength, tensile strength, compressive strength and shear strength.

In order to ensure the quality and safety of steel sheet piles, it is particularly necessary to formulate a standard specification.

Black welded steel tube refers to a welded pipe with a black surface.