Metal hoses are primarily composed of flexible bodies (corrugated tubes), mesh, and various types of connectors, serving as crucial components in the piping connections of modern industrial equipment. They are used as protective conduits for electrical wires, cables, and signals of automation instruments, as well as civil shower hoses, with sizes ranging from 3mm to 150mm. Small-bore metal hoses (inner diameter 3mm-25mm) are mainly used for protecting the sensing lines of precision optical scales and industrial sensor lines.