Metal hoses
Metal hoses: scope, limits of use and technical checkpoints.
5 guides
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Construction of corrugated metal hoses
A corrugated metal hose is a type of hose that derives its flexibility from the corrugated structure of a metal tube wall. Fluid contact, pressure, temperature, motion and end fittings are evaluated together; the name s…
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Braid and pressure in metal hoses
The outer braid of a metal hose is part of the design for carrying the loads that arise under pressure. The number of braid layers does not on its own determine the pressure rating; the body, diameter, material, tempera…
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Vibration and fatigue in metal hoses
The vibration resistance of a metal hose cannot be demonstrated merely by passing a static pressure test. The direction, amplitude and frequency of motion, the live length and the stresses near the fitting are evaluated…
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Weld and document checks on metal hose ends
In a welded metal hose, the material document, weld fabrication and the finished assembly test are different pieces of evidence. A single certificate does not automatically cover all of these; the required documents mus…
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Static and dynamic installation of metal hoses
The static minimum bend radius is not automatically valid for dynamic use. In a dynamic application, the radius, live length and routing for the product's motion condition must be used; static and dynamic values are kep…
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