Use two types of carbon steel and stainless steel materials, steel strip width of the two materials were 10mm, 12mm, and torsional Naiyaqiangdu high torque from the work of the 5-10Nm, as much as Naiyaqiangdu 1.3Mpa, are widely used in the automobile industry, Shipbuilding industry, machine-building industry in a variety of equipment, oil, water, gas pipelines, is a hose and hose to connect a variety of fastening the ideal accessory.