China Jiayao Co., Ltd. Company News

Basic concepts and structures of metal hoses: A metal flexible hose is a flexible pipeline composed of inner and outer metal thin-walled pipes, as well as flanges or joints at both ends. It has a certain degree of flexibility and elasticity, and can be used to connect pipes or equipment in different directions, heights, angles, and lengths. It is widely used in fields such as petroleum, chemical, aviation, and aerospace.   Specification requirements for metal hoses: 1. Length requirements: The length of metal flexible hoses should comply with relevant national and industry standards during use. Generally speaking, the length of a single section of metal flexible hose should not exceed 6m, and the length of a combination of multiple sections should not exceed 12m. This is because when connecting pipes or equipment, the length of the metal hose is too long, which will increase the stress and vibration of the fittings, thereby affecting the stable operation of the pipeline, and may even lead to fatigue fracture of the metal hose. 2. Flange requirements: The end connectors of metal hoses usually use flanges or fittings, and their specifications, models, and materials should meet the requirements of pipelines or equipment. When selecting metal hose flanges, comprehensive consideration should be given to factors such as usage environment, medium, pressure, temperature, etc., and installation and reinforcement should be strictly carried out in accordance with relevant standards. 3. Installation requirements: When installing metal hoses, the installation operating procedures should be followed, and the flange connection and reinforcement requirements should be strictly followed, especially paying attention to the fixing method and layout direction of the metal hoses. At the same time, support and reinforcement of brackets are required for long metal hoses to reduce external forces.   Precautions for metal hose 1. Selection of length: When using metal hoses, appropriate lengths should be selected according to actual needs to avoid situations of over length and over short, thereby ensuring stable operation and safe reliability. 2. Selection of specifications and materials: When selecting metal hoses, the specifications and materials that meet the requirements should be selected based on their usage environment and medium characteristics. Generally, metal hoses with high material strength, good corrosion resistance, and reliable sealing performance are chosen. 3. Maintenance: The service life of metal hoses is affected by their maintenance, and regular inspections and maintenance should be carried out. Damaged and aged metal hoses should be replaced in a timely manner to ensure their normal use.   【 Conclusion 】 The use of metal hoses is very common, but certain regulations and precautions need to be followed during use. Especially the length requirement of metal hoses should not exceed the specified range to ensure the stable operation and safe reliability of the pipeline.

The inspection and replacement of hydraulic hoses is an important maintenance process to ensure the efficiency and safety of the hydraulic system. The following are the steps for inspecting and replacing hydraulic hoses： 1. Regular inspections. Check the appearance of the hydraulic hose, including whether there are scratches, cracks, deformations, and other damages, as well as whether the hose connections are loose or leaking. 2. Clean the rubber hose. Remove mud, dust, and other debris from the hydraulic hose to prevent internal corrosion and wear. 3. Replacement and judgment. If there are cracks, deformations, or aging in the hydraulic hose, it should be replaced in a timely manner. Common signs of aging include hardening, cracking, etc; When replacing hydraulic hoses, products that meet specifications and quality requirements should be selected. 4. Determine the replacement time. It is generally recommended to inspect hydraulic hoses at least once a year and determine whether replacement is necessary based on their usage and condition; When used in extreme environments, the replacement cycle may be shorter. 5. Disassemble the old rubber hose. Before replacement, it is necessary to remove the old rubber hose, which usually involves releasing pressure from the hydraulic system and using appropriate tools to remove the joint. 6. Select a new hose. When selecting a new rubber hose, factors such as pipeline material (such as styrene butadiene rubber, chloroprene rubber, etc.), size, wall thickness, etc. should be considered to ensure that it is suitable for working conditions and media. 7. Install a new rubber hose. Before installing a new rubber hose, it is necessary to clean the inside of the pipeline and connect it with a dedicated connector to ensure that the pipeline is clean and free of impurities. 8. Testing and inspection. After installation, perform a leak test and pressure test on the hydraulic system to ensure that it operates normally without any leakage, distortion, or other issues. 9. Maintenance and recording. Regularly inspect the status of hydraulic hoses, promptly identify and address potential issues, record information such as the date and model of hose replacement, for subsequent maintenance and management. In addition, when replacing hydraulic hoses, attention should also be paid to using the correct tools to avoid damaging pipelines and other accessories, and to ensure that the pipeline connectors are completely sealed to avoid leakage.