Ferrule fittings serve as core components for connecting rigid tubing (such as carbon steel pipes and stainless steel pipes). Compliant with the ISO 8434-1/DIN 2353 international standards, they employ a mechanical structure featuring “a cutting edge that shears into the pipe + a tapered seal” to achieve convenient connections without welding, flaring, or tapered threads. These fittings are widely used in industrial machinery, marine vessels, wind power, automation equipment, and other fields.