komeihose

One of the topics we are often asked is STAINLESS STEEL BRAIDED HOSE. There are many different types of hoses on the market. They include metal, rubber, composite materials, polytetrafluoroethylene and fabrics. Generally, when there is no other (non-metallic) structure to work, use metal hose. In other words, metal hoses are used as a last resort. The decision on which type of hose to buy depends on the purpose of the hose. In general, there are eight factors that should remind you to consider using metal hoses:

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1. Extreme temperature

If the temperature of the medium passing through the hose or the temperature of the surrounding atmosphere is very cold or very hot, the metal may be the only material that can withstand the extreme temperature.

2. Chemical compatibility

Metal hoses can handle a wider range of chemicals than most other hose types. If the hose will be exposed to corrosive chemicals (internal or external), the use of metal hose should be considered. Stainless steel has good resistance to many common chemicals, and special alloys can be used to increase corrosion resistance. Please note that special attention should be paid to ensure that all component components can resist chemical attack from the transmission medium and environment.

3. Penetration problem

Non-metallic hose is easy to let gas penetrate into the atmosphere through the hose wall. On the other hand, metal hoses are not allowed to penetrate when properly manufactured. If it is important to contain gas in the hose, a metal hose may be required.

4. Possibility of catastrophic failure

When the metal hose fails, it usually produces small holes or cracks. Other hose types tend to produce large cracks or complete separation. In non-metallic hoses, barb connectors are usually fixed at the end of the hose with clips or crimped collars. Since the joint is welded to the metal hose, there is almost no joint fixation problem. If the sudden failure of the hose may be catastrophic, the metal hose can help minimize the impact of the failure by leaking the product at a slower speed.

5. Wear and excessive bending

In order to prevent abrasion and excessive bending, metal hoses can be used as protective covers for wires and even other hoses. The winding hose is very wear-resistant and is very suitable for protecting the corrugated hose from abrasive media or external damage. Wrapping hose can also be applied to the outside of corrugated hose to prevent it from excessive bending. Bending corrugated hose is a method to make the metal hose of the component excessively fatigue. However, the wrapped hose cannot be excessively bent without pulling the hose apart, so it is an excellent bending limiter when installed on the corrugated component.

6. Fire safety

Other hose types will melt when exposed to fire, while metal hose can maintain its integrity at temperatures up to 1200 º F. Flexible corrugated hoses are usually all-metal (unless the joints contain non-metallic seals), which makes them naturally fireproof. Low permeability and fire resistance make corrugated hose the first choice for barge handling applications or any applications where the hose may be exposed to open fire. 

7. Realize full vacuum

Under full vacuum, the metal hose maintains its shape, while other hose types may collapse. The corrugated metal hose has excellent hoop strength and can handle full vacuum. Non-metallic hose must use spiral to improve its vacuum level, but it may still collapse. 

8. Flexibility of accessories configuration

Any weldable connector can be integrated into the corrugated hose assembly and can be configured in any way, while other hose types require special handles and collars. This may be an advantage over other hose types that require multiple threaded connections to connect multiple hoses together. Each threaded connection is a potential leak point, so each welded joint eliminates a leak point and can be easily installed. 

Therefore, even though the application may not require the use of metal hoses, sometimes metal may provide the versatility required by the application.


Post time: Feb-28-2023