316L SS or Ti Grade 2

SS / Ti Porous Tubes

Name: SS / Ti Porous Tubes
Brand: FILTURE

Sintered porous tubes in 316L stainless steel or Grade 2 titanium. Open-ended tube format for installation in custom housings, reactors, or sparger assemblies.

0.22–100 µmFilter rating

φ14–200 mmOuter diameter range

1,200 mmMax tube length

SS & TiMaterial options

Sintered porous metal tubes at multiple angles

Sintered porous metal tube, open end detail

Sintered porous metal tubes grouped together

Sintered porous metal tubes in a crossed arrangement

Porous Components

SS / Ti Porous Tubes

Sintered porous tubes manufactured from the same 316L stainless steel or Grade 2 titanium powder as the filter elements, supplied as open-ended tubes for installation into custom housings, chemical reactors, or sparger assemblies.

Material

316L SS or Grade 2 Titanium

Filter rating

0.22 – 100 µm

OD range

φ14 – φ200 mm (Ti); φ20 – φ200 mm (SS)

Length

100 – 1,200 mm (single-piece)

Wall thickness

2 – 10 mm

End configs

Plain cut / flanged / threaded / capped

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Wall thickness 2–10 mm; outer diameter φ14–200 mm; length 100–1200 mm as a single-piece tube without joins. End configurations include plain cut (for weld-in or compression-fit installation), flanged, or threaded ends for direct pipe connection. Instrument-line tubes can also be fitted with a 1/4" tube socket-weld union (Swagelok-compatible), 3/4" male thread, or outer-thread connector. Welded end caps for use as complete cartridge elements are also available, and double-open (open at both ends) configurations allow bidirectional flow for backpulse or reverse-flush cleaning.

Titanium tubes are specified for corrosive media (HCl, H₂SO₄, seawater, wet chlorine) where SS tubes are unsuitable — including chlor-alkali secondary brine polishing and chlorine gas demisting at diameters up to φ200 mm, and industrial circulating water filtration down to 0.22 µm with ozone-compatible cleaning cycles. SS tubes cover standard industrial filtration, sparging, and diffusion duties. Both materials carry bubble-point test certification per element.

Technical Specifications

SS / Ti Porous Tubes — Full Specification

Properties & Performance

Material

316L SS; Ti Grade 2

Filter rating

0.22 – 100 µm

Porosity

30 – 45%

Max pressure

≈ 0.6 MPa typical (wall-dependent)

Max temperature

400 °C (not recommended above)

Dimensions & Configuration

OD — Ti tubes

φ14 – φ200 mm

OD — SS tubes

φ20 – φ200 mm

Length

100 – 1,200 mm

Wall thickness

2 – 10 mm

End options

Plain cut / flanged / threaded / welded cap / double-open

Instrument connectors

1/4" tube socket weld (Swagelok-compatible), 3/4" male thread, outer-thread

Custom dims

Yes — to customer drawing

Standard

GB/T 6886-2008 (SS) / GB/T 6887-2007 (Ti)

Product Features

Engineering Highlights of SS/Ti Porous Tubes

Open-Ended Tube Format

Supplied without end caps — plain cut, flanged, or threaded ends for direct integration into customer-designed housings and assemblies.

Custom Dimensions to Drawing

Non-standard OD, wall thickness, length, and end-cap geometry all available. Tolerances to ±0.1 mm on critical dimensions.

SS or Ti — Same Pore Range

Identical pore size range (0.22–100 µm) in both materials. Select SS for standard industrial duty; Ti for acid, chloride, or oxidising environments.

Bubble-Point Certified

Bubble-point test data available on request per ASTM F316. Batch records retained.

Backwashable

Rigid sintered structure withstands reverse-flow cleaning, acid soak, and ultrasonic cleaning without structural change. Double-open tubes allow bidirectional backpulse for thorough cleaning.

Double-Open Configuration Available

Open at both ends for bidirectional flow — maximises filtration area utilisation and enables reverse-flow or back-pulse cleaning from either direction.

Instrument-Line Connector Options

Small-diameter tubes fitted with a 1/4" tube socket-weld union (Swagelok-compatible), 3/4" male thread, or outer-thread connector for direct, leak-free installation in instrument and sample lines.

Full Material Certification

Mill test reports for powder raw material, chemical composition, and mechanical property data available on request.

Applications

Typical Applications for SS/Ti Porous Tubes

Ozone Sparger Tubes

Distribute fine ozone bubbles into water treatment reactors. Ti tubes used where ozone-resistant material is required; spherical/dome-shaped aeration heads with a 1/2" NPT connection are also available for fine-bubble aeration in recirculating aquaculture systems.

φ20–180 mm · 5–50 µm · Ti or SS

Reactor Filter Elements

Weld-in porous tube assemblies for in-situ filtration inside chemical reactors — removes catalyst particles or product crystals from reaction mixture.

2–50 µm · High-alloy options

In-Line Pipeline Filtration

Threaded or flanged tube elements for direct pipe installation in liquid and gas process lines.

5–100 µm · SS or Ti

Gas Diffusion and Distribution

Porous tubes for uniform gas injection into liquid columns in absorption, stripping, and aeration systems.

5–50 µm · Low ΔP · Custom OD

PEM Electrolyzer Components

Ti porous tubes for flow field and distribution elements in PEM electrolyzer modules.

1–10 µm · Ti Gr.2 · Custom

Chlor-Alkali Brine and Chlorine Gas Filtration

Ti tubes up to φ200 mm for secondary brine polishing and wet chlorine gas demisting ahead of membrane cells and compressors — titanium's passive oxide layer resists the chlorine and hypochlorite environment.

φ up to 200 mm · Ti · 30 µm

Pharmaceutical Sparging

Sterile gas sparging into bioreactors and fermenters. Ti or electropolished SS for cleanable pharmaceutical service.

5–20 µm · CIP-rated

Industrial Circulating Water Filtration

Ti tubes down to 0.22 µm for suspended solids removal in circulating water systems, including ozone-disinfected loops. Backwash at 3–5 bar restores flow without media replacement.

0.22 µm · Ti · Ozone-compatible

SS / Ti Porous Tubes

SS / Ti Porous Tubes

SS / Ti Porous Tubes — Full Specification