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.

Seamless OCTG casing is a casing made of seamless steel pipe as raw material.

U type steel sheet pile, also known as cold-formed steel sheet pile, is a high-strength, high-quality building material that is widely used in foundation projects, water conservancy projects and support structures of structures.