Stainless Steel Flexible Hose|corrugated metal hose

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Stainless Steel Flexible Hose|

Teflon Hose|

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Flexible Gas Connectors

Stainless Steel Flexible Hose

Teflon Hose

Contract Manufacturing service

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Stainless Steel Flexible Metal Hose

Flexible metal tubing is a kind of flexible connecting pipe used in modern industrial piping.Since the major components are made of austenitic stainless steel.the pipe is characterized by good flexibility.corrosion resistance.fatigue resistance,hign and low temperature resistance(-200℃～600℃) ,hign pressure resistance and long service life.Therefore,it is widely used by various industries.

Hydroformed Corrugation Process

A. Tube
The manufacturing process of flexible metal hose starts with stainless steel strip that is rolled and the edges welded together to form a thin-walled, gas-tight tube. Hose Master offers:

B. Hose
After the tube has been welded, corrugations are formed into the tube to make it flexible. There are two corrugation profiles, annular and helical.
Corrugated Hose 1

Braiding Process:

To give corrugated hose the ability to withstand pressure, stainless steel wire is braided over the hose. Hose may be single braided (one layer of braid) or double braided (two layers of braid) to achieve even greater working pressures. Braided braid is used on large diameter hose.

Designing the proper braid for each type of corrugated hose requires sophisticated engineering to maintain the proper balance between the braid strength and the hose flexibility. Hose Master's braid packages offer several advantages:

High Percentage Braid Coverage - Hose Master has a high percentage of braid coverage yielding better cycle life and protection against damage to the hose.

Machine Braided Hose - Hose Master weaves the braid directly onto the hose ensuring that the braid fits tightly against the hose, preventing potential hose deformation or squirm.

Selecting a Hose:

When selecting a hose, you must consider three variables: pressure carrying capability, flexibility, and chemical compatibility.

Pressure Carrying Capability - The hose must be strong enough to handle the pressures to which it will be exposed. To determine hose pressure capability, refer to the "Maximum Working Pressure" stated for the hose. The Maximum Working Pressure must be reduced for each of the following circumstances:
- Temperature - As temperature increases, hose working pressure decreases. After you have determined the proper alloy (see "Chemical Compatibility" below) go to the "Temperature Derating" table and match the alloy of the hose and braid with the highest temperature to which they will be exposed (either internally or externally) to obtain the proper derating factors. Then multiply the hose's Maximum Working Pressure by the most limiting temperature derating factor.
- Dynamic Pressure - Pulsating, surge, or shock pressures, like those encountered with quick opening or closing valves, can inflict severe damage on a hose. If your application entails pulsating pressures, the working pressure should be derated by 1/2. If your application entails shock pressures, derate the stated working pressure to 1/6 of its value.
Example: 1" Annuflex hose - T321 Stainless steel hose and T304 stainless steel braid @ 500°F with shock pressures.

Catalog Maximum Working Pressue = 718psi.
Temperature Derating Factor at 500°F = 0.88; and the Pressure Derating Factor = 1/6.
Maximum Application Working Pressure = 718 psi x 0.86 x 1/6 = 105.31 psi.
Flexibility - Confirm that the hose's minimum bend radius is less than the bend radius required. Keep in mind that the hose's minimum bend radius will change with pressure. To determine the minimum bend radius, go to the charts for the type of hose being used and match the line for the hose's I.D. with your application's pressure requirements. The chart will show you the recommended minimum bend radius. Care should also be taken for applications with vibration.
Chemical Compatibility - You must choose a material for the hose and braid that is compatible with the media being conveyed through the hose as well as the environment in which the hose is installed. When determining chemical compatibility it is important to know the temperature and concentration of the chemical(s). Although there are many resources to confirm chemical compatibility, two of the industry standards that you may use are the National Association of Corrosion Engineers (NACE) and the Compass Corrosion Guides. You may also contact our Customer Service Department which can check these sources for you.

Fittings:

Metal hose is more versatile than other hose in that virtually any fitting can be attached to metal hose. Other types of hose require special shanks and collars in order to attach fittings. For metal hose, any fitting made from a weldable material can be attached without the need for special features. This versatility also means that multiple fittings can be welded together to make custom solutions for difficult applications.
Selecting the proper fittings for an application is largely determined by the mating fittings to which the hose assembly will be attached. Once the mating fittings have been identified, the hose fittings should complement the mating fittings in type, size, and alloy. Even though the selection of hose fittings is determined by the mating fittings, it is a good idea to confirm that the fittings used in the application are appropriate for the application and any necessary changes made. Ensure that the fittings are chemically compatible with and are able to withstand the pressure and temperatures of both the media and the surrounding environment.
The following show commonly used fittings for corrugated metal hose assemblies. Please contact Hose Master's Customer Service Department for end connections that are not listed.