Fluid, piping & valves
Stainless steel hose assemblies
Stainless steel corrugated and braided flexible hose assemblies for steam, chemical, exhaust and pneumatic service, with single, double or triple wire braid and end fittings welded or brazed to suit the connection.
Overview
A stainless steel flexible hose has a thin-walled corrugated inner tube that provides flexibility and pressure containment, usually covered by one or more layers of stainless wire braid that carry the pressure load and limit elongation. Closed-pitch corrugations give greater flexibility; interlock hoses suit low-pressure duties such as exhaust. Corrugated hose is listed in AISI 321, 316L and 316, with 304 braid as standard and 321 or 316L braid on request, from 1/4 in to 12 in ID. End fittings include flanges, unions, BSP, BSPT, NPT and JIC threads, tri-clamp, camlock and quick-release couplings, attached by TIG welding or brazing. PMI testing is available.
Selecting a metal hose assembly
Pressure capacity falls as hose diameter increases and rises with additional braid layers, so confirm working pressure and temperature against the size required. Consider the bend radius and movement the hose must accommodate, the media for material choice, and the end connection at each end. Overall length is measured end to end including fittings.
Range overview
- Types and variants
- Corrugated Hose (Unbraided)
- Single Braid Hose Assemblies
- Double Braid Hose Assemblies
- Triple Braid Hose Assemblies
- Closed-Pitch Flexible Hose
- Interlock Hose
- Flexible Hoses for Cryogenic Service
- Materials and grades
- AISI 321
- AISI 316
- AISI 316L
- AISI 304 (Braid)
- Size range
- 1/4 in to 12 in ID
- Single Lengths 1 m to 6 m
- Pressure / temperature
- 1/4 in (6 mm): 154 bar max working (single braid), 246 bar (double braid)
- 1 in (25 mm): 50 bar max working (single braid), 80 bar (double braid)
- 2 in (50 mm): 31 bar max working (single braid), 49 bar (double braid)
- 4 in (100 mm): 16 bar max working (single braid), 26 bar (double braid)
- 10 in (250 mm): 6.5 bar max working (single braid), 10.5 bar (double braid)
- Connections and interfaces
- Flanges (Round, Square, Swivel)
- Unions
- BSP
- BSPT
- NPT
- JIC
- Tri-Clamp
- Camlock
- Quick-Release Couplings
- Standards referenced
- BS 6501-1:2004
- ISO 10380:2012
- Features
- TIG Welded or Brazed End Fittings
- Single, Double or Triple Braid
- PMI Testing Available
Exact specifications depend on the variant, material and size. Confirm ratings and certification against the datasheet or with our engineers before ordering.
Applications
- Steam Lines
- Boiler Connections
- Chemical Transfer
- Exhaust Lines
- Pneumatic Lines
- Vibration and Misalignment Absorption
Industries
- Chemical
- Pharmaceutical
- Fertilisers
- Pulp and paper
- Steel
- Power generation
- Oil and gas
Information that speeds up a quotation
Share what you know. Anything you are unsure of can be marked “not known” — our engineers will help confirm it.
- Nominal size
- Pressure class
- Material
- End connection
- Standard
- Temperature
- Media
- Drawing
- Certification
Need a datasheet?
Add this family to your enquiry list and mention the variant — we will send the relevant technical documents.
Piping and hydraulic connections
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Frequently asked questions
How do I specify a stainless steel hose assembly?
State the hose ID, overall length including fittings, the end connection at each end, the media, working pressure and temperature, and the braid configuration if known. Describe any movement the hose must take, such as vibration, offset or bending. You can request test records and material certificates with the assembly.
Why does a larger hose have a lower pressure rating?
For a given corrugation and braid construction, the pressure force on the hose wall grows with diameter, so the allowable working pressure falls as size increases. Adding braid layers raises the rating. This is why pressure and size need to be checked together when selecting a metal hose.
Ready to specify stainless steel hose assemblies?
Send the details you have — quantities, sizes, drawings or a part number. Unknowns are fine.