GUANLIN nano flame retardant filter cartridge, sub-micron element for welding fume, laser cutting and thermal spray extraction.
Nano fibre cartridges on a flame retardant substrate, capturing sub-micron fume while tolerating sparks in welding, laser, plasma and thermal spray extraction.
Description
Nano fibre media puts a very fine fibre layer on the upstream face of the pleat pack, so sub-micron particles are captured before they reach the coarser substrate. Combined with flame retardant treatment, this cartridge suits hot work and metal processing where fine fume and occasional sparks appear together — welding, laser cutting, plasma and thermal spraying.
Why Choose GUANLIN Nano Flame Retardant Cartridges
- Nano fibre layer — high sub-micron efficiency without the pressure penalty of a dense single-layer media.
- Flame retardant treatment — resists ignition from sparks and self-extinguishes once the source is removed.
- High dust holding capacity — the graded structure stores dust through the depth of the pleat.
- Stable pressure drop — blower performance stays within specification across the service interval.
- Robust pleat pack — separators and end caps hold geometry under pulse cleaning.
- Standard fit — interchangeable with common cartridge housings, custom lengths available.

Application Scenarios
Welding fume extraction
Sub-micron metal oxide fume combined with occasional sparks is the classic duty: the nano layer captures the fume while flame retardant treatment tolerates the sparks.
Laser and plasma cutting
Ultrafine fume and soot load quickly; the graded nano structure holds more dust before resistance rises.
Thermal spraying and metalizing
Fine metal particles at elevated temperature demand both sub-micron capture and spark tolerance.
Grinding and polishing with coolant residue
Fine metal dust plus light oil carry-over is handled better by nano media than plain polyester.
Battery and electronics manufacturing
Fine particulate control where product quality and operator exposure both matter.
Foundry and die casting fume
Hot, fine metallic fume with intermittent sparks suits the combined properties.

Applicable Working Conditions
- Sub-micron fume and fine dust
- Occasional sparks or hot particles
- Dry streams, standard ambient temperature
- Pulse jet cleaning

Product Specifications
| Item | Specification |
| Media | Nano fibre layer on flame retardant substrate |
| Filtration Rating | 0.3–10 μm |
| Flame Resistance | Self-extinguishing |
| Outer Diameter | Ø325 mm standard and custom |
| Length | 600 / 660 / 1000 mm and custom |
| MOQ | 10 pcs |

FAQ
Q1. What does the nano layer do?
It adds sub-micron efficiency on the upstream face without a large pressure penalty.
Q2. Is it fireproof?
No — it resists ignition and self-extinguishes after the source is removed.
Q3. Can it handle welding fume?
Yes, that is its primary application.
Q4. MOQ and lead time?
10 pcs, 7–15 days.
Key Specifications
- Media: nano fibre on FR substrate
- Rating: 0.3–10 μm
- Flame: self-extinguishing
- OD: Ø325 mm standard
- MOQ: 10 pcs




