Metal hoses and Teflon hoses have many similarities, such as high temperature resistance, corrosion resistance, wear resistance and other performance characteristics, and are used in electrical, chemical, mechanical, metal surface treatment, pharmaceutical, medical, food, metallurgy and smelting. It is widely used in high and low temperature resistance, corrosion resistance materials, insulating materials, anti-stick coatings, etc. in industries, making them irreplaceable products, so many people will consider them as a product. But in fact, metal hoses and Teflon hoses are two different products, and there are many differences.
The metal hose has strong corrosion resistance; the hose body is a thin-walled stainless steel tube, which has strong flexibility, strong elasticity, strong bending and strong vibration resistance. The reinforced protection of the braided mesh sleeve makes it have a higher pressure bearing capacity; there are many connection methods, and it is easy to connect the same instrument. It has good corrosion resistance, high temperature resistance, low temperature resistance (-196℃~+420℃), light weight and small size in the fields of petroleum, chemical industry, metallurgy, electric power, papermaking, wood, textile, construction, food, tobacco transportation , good softness and so on.

Teflon hose is actually a PTFE hose, which is a high-quality plunger extruded tube that uses a special processing technology to tightly combine the steel tube and the plastic tube. It has very good resistance to high temperature and low temperature. The temperature can reach 300 ℃ in a short time, and it can be used continuously in the middle of 240 ℃ ~ 260 ℃. It can work at freezing temperature without embrittlement and does not melt under high temperature. ; Has excellent wear resistance, under a certain load, has the dual advantages of wear resistance and non-adhesion; has a low friction coefficient, the friction coefficient changes when the load slides, but the value is only in the middle of 0.05-0.15; It has the characteristics of acid resistance, alkali resistance and resistance to various organic solvents. It is basically insoluble in all solvents and can protect the parts from being eroded by all chemicals. The PTFE hose has excellent non-combustibility characteristics and oxygen limit indicators. The value is below 90, and the incineration grade is V-0... It solves the disadvantage that the steel-lined PTFE pipes and parts cannot be used under negative pressure in the past, and has been widely used in many high-temperature and high-negative pressure systems such as distillation.

The above is about the difference between metal hose and Teflon hose. Generally speaking, Teflon hoses are more widely used than metal hoses.