Corrugated Stainless Steel Hoses

HoseCo fabricate a full range of Corrugated Stainless Steel hoses in house. Stainless steel hoses are an excellent option for low and high temperatures applications as well as with a wide scope of chemicals.

With the ability to offer product to the premium 316 ISO 10380 Type 1-50 standard and with fully certified welding and NDE.

Installation Data

Construction

The hoses are annularly corrugated formed from butt welded rigid tube. Depending on the application, required working pressure and conditions of operation, a single or double layer of wire braid can be applied externally to the hose to restrain it, increasing its ability to withstand pressure, increasing hoop strength and protection from abrasion. The extent of braided, gauge and angle lay is calculated carefully to maximise performance.

Material

Tube: BS EN 10088-2:2005 1.4541 (321S31) or 1.4404 (316S11)
Braid: BS EN 10099-3:2005 1.4301 (304S31) or 1.4401 (316S31)

Shock Pressure

Pulsating, surge or shock pressures considerably affect hose longevity and if encountered, peak pressure must not exceed 50% of the maximum working pressure.

Flow Velocity

High velocities should be avoided as they can lead to premature fatigue failure.
An interlock hose should be used as a liner if velocity exceeds:

Unbraided: 30m/s (gas); 15m/s (liquid)
Braided: 45m/s (gas); 22.5m/s (liquid)
When the hose is installed in a bend condition, these values should be reduced by 50% for a 90˚ bend, 25% for a 45˚ and so on, proportionally to the angle. With higher velocity, the next larger hose with liner should be used.

Pressure Loss

To achieve the same pressure loss as in steel pipes, the diameter of the corrugated hose should be increased by 15%.

Pressure Derating Factors

The pressure ratings given apply to hose with welded end connections at room temperatures. The following derating factors must be applied at higher temperatures.

Download our Corrugated Stainless Steel Braided Hose Data Sheets

Please contact us for more information.