How to become an expert in buying metal hoses and corrugated hoses

How to become an expert in buying metal hoses and corrugated hoses

Metal hose: The stainless steel metal hose is made of stainless steel SUS304 or SUS301, used as a protection tube for wires, cables, optical fibers, automatic instrument signal lines and instrument wire and cable protection tubes, the outer diameter can be from 3mm to 150mm, small diameter stainless steel The metal hose (outer diameter 5mm-25mm) is used for the protection of precision electronic equipment and sensor circuits, the protection of precision optical scale sensing circuits, and the protection of industrial sensor circuits. It has excellent flexibility, corrosion resistance, high temperature resistance, abrasion resistance, and tensile resistance.       

Metal corrugated hose: The structure is composed of corrugated pipe, net sleeve, and joint. It is easier to cause the net sleeve and corrugated belt to break along the weld. The main function of the hose is the soft connection of the pipeline, which plays a role of shock absorption and noise resistance, and can compensate for the quantitative displacement of the pipeline. The corrugation of the metal hose is formed by a wave punching machine. The length can be any length. The corrugation shape is smaller than the corrugation height and distance of the compensator. The length of the hose can be as long as it is. The bellows compensator is composed of metal bellows and components. The working principle of the bellows compensator is mainly to use its own elastic expansion and contraction function to compensate the axial, angular, lateral and combined displacements of the pipeline due to thermal deformation, mechanical deformation and various mechanical vibrations. The compensation function is resistant to The functions of pressure, sealing, corrosion resistance, temperature resistance, impact resistance, vibration reduction and noise reduction can reduce pipeline deformation and increase pipeline service life.

       1. State, according to the state of the metal hose when it is used, refer to the correct use and installation method of the metal hose and the optimal length of the hose for settlement compensation.

　    2. size, nominal diameter of metal hose, selection of joint type (mainly flange connection, threaded connection, quick connector connection), size of metal hose, and hose length.

　　3. Pressure, according to the actual working pressure of the metal hose, and then query the nominal diameter and pressure gauge of the corrugated metal hose to decide whether to use the stainless steel mesh type metal hose.

　　4. Temperature, the working temperature and range of the medium in the metal hose; the ambient temperature when the hose is working. When the temperature is high, the pressure after temperature correction must be determined according to the temperature correction coefficient of the working pressure of the metal hose at high temperature to determine the correct pressure level.

　　5. Medium, the chemical properties of the medium conveyed in the metal hose, according to the corrosion resistance of the hose material, determine the material of each part of the hose.