Cold drawn steel pipe is a high-precision steel pipe material processed by cold drawing or hot rolling. Due to its advantages such as non-oxidized inner and outer walls, high pressure resistance without leakage, high precision, high luster, ease of cold bending without deformation, no cracks during expansion or flattening, it is mainly used for producing products like pneumatic or hydraulic components, such as cylinders, which can be seamless or welded pipes.