Stainless Steel Annular Corrugated Hose

Stainless Steel Annular Corrugated Hose

Stainless Steel Corrugated Hoses are to replace the traditional rubber and plastic hoses, where high or low temperature or chemically corrosive fluids are encountered. These hoses are used for correction of minor misalignment, to accommodate reciprocating or flexing movement, and to absorb vibrations.

The Advantage of Flexible Metal Hose

  1. High Physical Strength.
  2. Suitable for wide temperature range (-200oC to +700oC).
  3. Fire Resistant
  4. Good corrosion characteristic.
  5. Long Life (When Installed Correctly).
  6. Resistance to penetration and damage.
  7. Moisture Resistant.
  8. Connects misaligned rigid piping.
  9. Connects moving parts of machinery and equipment.

Static Installation

Where the flexible hose is use to connect pipe work out of alignment and remain in a static position.

  1. OCCASIONAL FLEXING : When the hose is only required to flex occasionally, such as manual handling.
  2. CONSTANT FLEXING : When the hose is only required to flex continuously, usually on moving machinery.
  3. VIBRATION : High Frequency, low amplitude movement, Generally caused by pumps and compressors.

Modes of movements

  1. ANGULAR  MOTION: Motion occurs when one end of the hose assembly is fixed and other is deflected in a simple bend.
  2. OFFSET MOTION : Motion occurs when one end of the hose assembly is fixed and other end is offset but remain parallel to the other end. Do not allow this motion to stretch the hose.
  3. AXIAL MOTION : Motion occurs when one end of the flexible hose assembly is fixed and the other end of the hose deflected along the axis of the hose. Braided Metal Hose is not suitable for axial motion.

TORSION : Twisting around the hose axis while the other end fixed. Metal hoses are sensitive to torsion and must be avoided.

BEND RADIUS : The minimum radius to which the hose can be bent without permanent deformation. Radius bend measured to hose center line.

DYNAMIC BEND RADIUS : The minimum radius to which the hose can be bent on one side of the center line when movement takes place.

STATIC RADIUS : The minimum radius to which the hose can be bent when no movement takes place.


Technical Data For S.S. Corrugated Hose

Material Hose : S.S. 304/321/316/316L, BRAID: S.S. 304

Temperature : -200oC to + 700oC

Construction : Annular convoluted close pitch Butt welded S.S tube with S.S tube with S.S. wire braiding suitable for high degree of flexibility and working pressure.

Hose Specification : B. S. 6501

PR In Kg/¢m2
at 20°C
in Kg/cm2
at 20°C
in mm
1/4 6 15 100 150 100 0.30
3/8 l0 19 90 135 150 0.30
1/2 12 22 80 120 200 0.30
3/4 20 31 64 96 203 0.30
l 25 37 50 75 229 0.30
1-1/4 32 47 40 60 267 033
1-1/2 40 57 30 45 292 0.33
2 50 71 28 42 318 0.38
2-1/2 65 86 24 36 508 0.38
3 80 98 18 27 610 0.40
4 100 128 16 24 750 0.40
5 125 155 12 18 900 0.40
6 150 178 10 15 1050 0.40
8 200 225 8 12 1180 0.45
10 250 278 6 9 1220 0.50
12 300 330 5 7.5 1400 0.60

MINIMUM BEND RADIUS : Dimensions given are for flexing application. For static condition 60% of the value should be used.

WORKING PRESSURE : Working pressure are quoted for fluid Temperature at 20°C. Higher fluid Temperature will result in a lower working pressure. These modified working pressure can be calculated using the TEMPERATURE CORRECTION CHART.

TESTING : All hose assemblies are hydraulically tested before being despatched.

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WORKING PRESSURE : The maximum service pressure To which 0 hose assembly should be subjected. Pressure fluctuation to be considered while selecting the hose.

TESTING PRESSURE : One and half of The actual working pressure, never exceed the rated test pressure.

MAXIMUM RATED TEST PRESSURE : The maximum pressure at room temperature to which a standard hose assembly should withstand without harmful deformation.

PULSATING PRESSURE: Pressure that fluctuates above and below the normal working pressure. If the pulsations are significant margin to be provided while selecting the hose.

SHOCK PRESSURE: A sudden pressure increases with shock wave pulse above the normal working pressure. This will effect the service life of the hose. If this situation’ is encountered the peak pressure must not exceed 50% of the maximum working pressure.