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2020-02-24Exhibition, product

How to choose food grade steel wire hose?

 

At present, there are many types of food-grade steel wire hoses on the market, with different performances and great differences in quality. It is not easy to choose a good food-grade steel wire hose. When we pipe, we must have a clear understanding of the performance of the pipe, so that we can avoid many misunderstandings or detours

Pay attention to the following points when generally selecting food-grade steel wire hoses:

1. Material
There are two common food grade steel wire hoses: PVC and PU.
In terms of materials, PU itself has high safety performance, it is a polymer material. Is an emerging organic polymer material, known as the “fifth largest plastic”. After processing, it can completely reach the food grade, so it has a high safety factor and is an ideal hose. PVC can also be processed into food-grade hoses, but there is a risk of purification and use of additives, and it requires high process and technical requirements. Therefore, although a PVC steel wire hose is said to be a food-grade hose, it is generally difficult to achieve.

2. Object transport
The safety of the conveyed object is very important. If the stability of the hose is poor, it will easily dissolve with the conveyed material, which will cause contamination of the food, but the PU steel wire hose has a good resistance to hydrolysis and antimicrobials, Is a safe food grade hose choice.PU-Steel-duct-hose (5)

3. Use environment
Attention must be paid to what objects are transported, including the environment and temperature of the transported objects. Generally, food-grade PU and PVC can be used at normal temperature, but special attention must be paid when transporting objects at higher and lower temperatures.
Under high temperature environment, the stability of PVC will deteriorate, and the phenomenon of dissolution will occur easily. According to relevant data, PVC is prone to produce toxins at high temperatures. Therefore, PVC steel wire hoses are not suitable for use at temperatures exceeding 50 degrees Celsius. It has good stability and does not produce toxic substances. At low temperatures, PVC must be added with additives to maintain low temperature softness. PU steel hose can still maintain good mechanical properties at minus 35 degrees Celsius. Its excellent characteristics are unmatched.

 

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