Thorburn S65 — Extra Flex Helical, Type 321 SS with 304 SS Braid

The Thorburn S65 — Extra Flex Helical, Type 321 SS with 304 SS Braid is a helical corrugated metallic hose in the Stainless SS Corrugated family. Type 321 SS core with single braid of Type 304 SS. Working pressure to 35 bar, operating temperature -200°C to +650°C.

Construction

• Type: Stainless SS Corrugated — Type 321 helical extra-flex (low torsional stress)
• Construction: Helical Corrugated
• Core material: Type 321 SS
• Braid: Single Braid — Type 304 SS
• End fitting material: 316L SS standard; Inconel, Hastelloy, or Monel available for matched-trim service
• Nominal ID range: DN 25 (1") to DN 250 (10")
• Bend radius (static): 75 mm minimum
• Bend radius (dynamic): 250 mm minimum
• Weight: ~0.4 kg/m (size-dependent)

Performance

Maximum working pressure 35 bar at the smallest bore (decreases with increasing diameter — refer to the OEM size table for per-size ratings). Minimum burst pressure 140 bar with safety factor 4:1 per ISO 10380. Operating temperature range -200°C to +650°C (continuous service; intermittent excursions evaluated on request). All assemblies hydrotested at 1.5× working pressure with a witness-test certificate available on request.

Applications

• High-cycle vibration absorption
• Compressed gas connectors with frequent bending
• Articulated / robotic motion lines
• Reciprocating equipment connectors

Compliance

• ISO 10380:2012 PSL 1 (Corrugated Metal Hoses and Hose Assemblies)
• Pressure Equipment Directive 2014/68/EU Module D
• ASME B31.1, B31.3
• CSA B51
• EN 10204 3.1 / 3.2 mill test reports on request

How to order

Confirm (a) line working pressure and process medium, (b) operating temperature range, (c) bore size and overall length, (d) end fitting type per side (NPT / BSPP / ANSI 150-1500# RF / DIN PN10-PN40 / sanitary tri-clamp / camlock / butt-weld / etc.), (e) braid configuration (unbraided / single / double / triple — drives pressure rating), (f) any required certifications (ISO 10380 PSL class, PED Module, ASME conformance, NACE MR0175, CGA / UL / Chlorine Institute). Indus quotes ex-Dubai for stock items and ex-OEM for build-to-order, with mill test reports and pressure-test certificates included.

Companion products

Pair with matched ANSI flange gaskets, hose clamps, and OEM end-fitting hardware. For high-vibration installations, also specify a Lock-Section or Armor-Flex external hose guard. For fire-rated runs, add a Fry-Sil Fire Jacket or Fire Tape covering. For high-cycle or premium-corrosion service, ask about the matched OEM expansion-joint variant of the same alloy and pressure class.