RATTAY metal hoses

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Metal hoses

Corrosion resistance

Korrosionsbeständigkeit:

Stainless steel is known for its corrosion resistance. Stainless steel corrugated hose assemblies are therefore particularly suitable for applications where they could come into contact with corrosive substances, such as in chemical, petrochemical or marine environments.

High temperature resistance:

Stainless steel corrugated hose assemblies can withstand extreme temperatures, both high and low. This makes them ideal for applications where temperature fluctuations may occur, such as in food processing, the chemical industry, or in high or low temperature environments.

Flexibility:

The wave-shaped structure of stainless steel corrugated hoses gives them a high degree of flexibility. This enables easy installation, even in environments with confined spaces or complex pipe routing.

Pressure resistance:

Stainless steel corrugated hose lines can withstand high pressures. This makes them suitable for applications in industrial processes, power generation or hydraulic systems.

Long service life:

Thanks to the high corrosion resistance and durability of stainless steel, stainless steel corrugated hose lines generally have a long service life, resulting in low maintenance costs.

Hygienic:

Due to their smooth surface and ability to be easily cleaned, stainless steel corrugated hose lines are in high demand in industries with high hygiene requirements, such as the food and beverage industry.

Versatility:

Stainless steel corrugated hose assemblies are available in various sizes and configurations and can therefore be used in a wide range of applications including chemical, food processing, mechanical engineering and more.

It is important to note that selecting the appropriate type of stainless steel and the correct design of the corrugated hose assembly depends on the specific requirements of each application.

Pressure

Pr= burst pressure under “normal” conditions (hose straight and immobile, internal pressure hydrostatic, temperature + 20 °C).

Pn = Nominal pressure = highest operating pressure according to EN 10380 under “normal” conditions

Pratical rule: Ps = Pn · 

Ps = Highest operating pressure under operating conditions
Kt = Correction factor for temperature
Ks = safety factor, depending on application conditions

All hoses are tested according to the requirements of DIN EN ISO 10380.

The test pressure is 1.5 times the operating pressure, converted to 20 °C.

Bend

Bending radius = rolling radius + outer diameter : 2

Rs = Theoretical static minimum bending radius (hose immobile)
Rd = Theoretical minimum dynamic bending radius (repeated bending)

The theoretical values are permissible under low pressure and for temperatures between – 30 °C and + 150 °C.

Practical rule:

  • for – 30 °C < t < + 150 °C with operating pressure Pu
    Bending radius = Rs (or Rd) · 
  • for t < – 30 °C or t > + 150 °C, no matter whichPu
    Bending radius = Rs (or Rd) · 1,5

Temperature

Optimum resistance from – 269 °C (liquid helium) to + 550 °C, taking into account the above information.

Program overview

Here you will find an overview of the different standard and special versions of our metal hoses.