The "Other Steel Pipes" category refers to a broad range of steel pipe products that are not limited to specific applications or standards. Although they do not fall into major classifications such as general structural, piping, or mechanical structural uses, they are manufactured in various steel grades, sizes, wall thicknesses, and shapes (e.g., round, square, irregular) to meet diverse industrial needs. Their characteristics include high versatility and customizability according to specific performance requirements. Applications are diverse, including auxiliary members for building and civil engineering structures, frames and parts for industrial machinery, agricultural materials, and decorative items. Typical processing methods include cutting, bending, welding, drilling, threading, and surface treatments such as plating and painting for rust prevention and aesthetic purposes, which determine the function and appearance of the final product.