Views: 480 Author: Site Editor Publish Time: 2022-03-01 Origin: Site
How to choose the metal hose?
Talking about how to choose the metal hose:
1. Pressure: The actual working pressure of the metal hose, the nominal pressure is PN/working pressure P.
2. Medium: The chemical properties of the conveying medium in the metal hose. Determine the material of each part of the hose according to the corrosion resistance table.
3. Temperature: the working temperature and range of the medium in the metal hose; the working environment temperature of the hose. At high temperatures, the temperature correction factor must be corrected to determine the maximum allowable pressure at the working temperature to determine the correct choice of pressure level.
4. Size: nominal diameter of metal hose, joint type and size, hose length.
As a kind of flexible pressure-resistant pipe, the metal hose is installed in the liquid conveying system to compensate for the mutual displacement of the pipes or the connecting ends of machines and equipment, absorb vibration energy, and play the role of vibration reduction and noise reduction. It has good flexibility and light weight. , Corrosion resistance, fatigue resistance, high and low temperature resistance, etc.
Stainless steel metal hose is a high-quality flexible pipeline in modern industrial pipelines. It is mainly composed of bellows, net sleeves and joints. Its inner tube is a spiral or ring-shaped thin-walled stainless steel corrugated tube, and the outer mesh sleeve of the corrugated tube is woven by stainless steel wire or steel belt according to certain parameters. The joints or flanges at both ends of the hose are matched with the joints or flanges of the customer's pipeline.
The corrugated pipe of the hose is formed by high-precision plastic processing of seamless or longitudinally welded stainless steel pipes with extremely thin walls. Due to the elastic properties of the bellows contour, the hose has good flexibility and fatigue resistance, making it easy to absorb various cyclic loads of movement and deformation, especially in the pipeline system, which has the ability to compensate for large displacements. In addition to the original excellent equipment for making hoses, our factory introduced two high-precision and high-tech automatic welding and forming production lines for corrugated pipes in 2012, which greatly improved the quality of the hose and made the length of the produced hose. Restrictions to meet the needs of extra-long hoses. The nominal diameter range of the hose is DN6-1000mm, and the length is optional.
The mesh sleeve is the main pressure-bearing part of the hose installed in the pressure pipe, and it also protects the corrugated pipe. According to the pressure in the pipe and the application site, one or more layers of stainless steel wire or steel belt can be selected for weaving. The pressure range of the hose is generally PN0.6-32.0MPa, up to 42.0MPa.