Product Description

Corrugated hoses are pressure and vacuum tight. The permissible operating pressures for hoses with small
dimensions reach **0 bar (with a *-fold burst pressure safety factor). The pressure resistance of large dimensions is
lower for technical reasons. Stainless steel models have a temperature resistance of up to approx. **0 °C,
depending on the pressure load, and even higher values are possible with special materials. In the low temperature
range, stainless steel corrugated hoses can be used down to ***0 °C.
 
Structure and function:
Corrugated hoses are used as economical, flexible connecting elements that permit movement, thermal expansion
and vibrations, and that can be used as filling hoses. The starting material is a seamless or longitudinally welded,
thin-walled tube into which corrugations are introduced by mechanical or hydraulic means using special tools.
Corrugated hoses are absolutely leak-tight and are used to convey liquids or gases under pressure or as vacuum
lines. They are also referred to as pressure hoses. Their special design achieves both flexibility and pressure
resistance.
 
Application areas of metal hoses
With its ability to meet high demands for conveying hot and cold substances, this modern technology has the
following major areas of application:
Electrical industry and mechanical engineering: as a protective hose for electrical cables or light conductors
As a suction, conveying and coolant hose, e.g. when conveying and transporting liquid gas
Automotive industry: as an exhaust gas hose that acts as a vibration decoupler in exhaust systems
As a ventilation hose in technical building equipment
Steel industry
Measuring and control equipment
Metal expansion joint (also called expansion bellows) are compensating elements for thermal expansion and relative movement in pipelines, containers and machines. They consist of one or more metal bellows, connectors at both ends, and tie rods that depend on the application. They are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints.
In modern expansion joints, the metal bellows are often produced with a so-called multi-ply design. To increase both flexibility and stability, multiple thin plies of metal are layered to form the bellow walls. There are two basic design types: The multi-ply and the multi-walled bellows structure. The multi-ply structure consists of a pressure-tight, longitudinally welded outer and inner cylinder of stainless steel. In between these cylinders is an open, spiral cylinder which forms multiple plies depending on the design. The multi-walled structure consists of several concentric, longitudinally welded cylinders. Each cylinder forms a pressure-tight and closed "wall".
Normally types are: axial / angular / lateral expansion joint,
The main advantages of multi-walled bellows:
Resistance to high and very high pressures
Large movement absorption
Small dimensions
Small adjusting force rates
Optimal compensation in a very small space
Early leak indication (in case of damage) via standard check hole
Complete burst resistance
Possibility of permanent leak monitoring in critical media
Economical use of high-quality, corrosion-resistant materials such as Inconel, Incoloy, Hastelloy, titanium and Tantal
Insulation against structure-borne noise up to *0 dB
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