# Stainless Steel (SS) Filter Cages – Premium Baghouse Support Cages for Dust Collectors
## What Are SS Filter Cages?
**Stainless steel (SS) filter cages** (also known as bag cages, filter bag cages, or baghouse support cages) are the internal skeleton structures that support filter bags in industrial dust collection systems. They prevent bag collapse during pulse-jet cleaning and maintain proper bag shape for optimal dust cake release and filtration efficiency.
Our SS filter cages are manufactured from high-grade stainless steel (304, 316, 316L, or 2205 duplex) to provide **superior corrosion resistance**, **high temperature tolerance**, and **long service life** in demanding environments such as chemical plants, incinerators, offshore platforms, and food processing facilities.
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## Why Choose Stainless Steel Over Carbon Steel?
| Feature | Carbon Steel Cage | Stainless Steel Cage (304/316) |
|---------|------------------|-------------------------------|
| Corrosion resistance | Low (requires coating/painting) | Excellent (no coating needed) |
| Moisture/humidity resistance | Poor – rusts quickly | Outstanding |
| Chemical resistance | Poor against acids/alkalis | Good to excellent (316L best) |
| Temperature limit | ~300°C (with coating degradation) | 400°C+ (SS itself) |
| Lifespan in wet/acidic gas | 6–12 months | 3–5+ years |
| Maintenance cost | High (frequent replacement) | Low |
For applications involving **condensation, acidic gases, salt spray, or high humidity**, stainless steel filter cages are the only reliable choice.
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## Key Features of Our SS Filter Cages
- **Material grades:** SS304, SS316, SS316L, SS2205 (duplex) – fully traceable mill certificates.
- **Wire diameter:** 2.5 mm – 4.5 mm (customizable).
- **Number of ribs:** 8, 10, 12, 16, 20, 24 ribs – optimized for bag length and pressure.
- **Top / bottom configurations:** Venturi, snap band, flanged, threaded, or custom punched caps.
- **Anti-collapse rings:** Double or triple rings with spacing designed to pulse-jet frequency.
- **Welding:** 100% fully welded joints – no sharp edges that could damage filter bags.
- **Surface finish:** Smooth, deburred, passivated (for SS) – optional PTFE coating for extreme chemical resistance.
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## Best Filter Cage Supplier in China – Why Customers Choose Us
We are recognized as **one of the best filter cage suppliers in China**, with over 15 years of OEM/ODM experience. Here is what makes us the top choice:
✅ **In-house production** – From wire drawing to welding, coating, and packaging – full quality control.
✅ **ISO 9001:2025 & ISO 14001 certified** factory.
✅ **Exact fit guarantee** – We manufacture based on your baghouse drawing or sample cage. Tolerances ≤ ±1 mm.
✅ **Fast lead time** – 7–15 days for standard sizes; 20 days for SS custom cages.
✅ **Export experience** – Delivered to USA, Germany, Japan, Korea, Middle East, Southeast Asia.
✅ **Competitive pricing** – 30% lower than European/US brands for identical quality.
**Search keywords:** *best filter cage supplier in China, stainless steel bag cage manufacturer, SS filter cage factory, China baghouse cage export, high quality dust collector cage, corrosion resistant filter cage*
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## Technical Specifications (Standard SS304/SS316)
| Parameter | Value |
|-----------|-------|
| Outer diameter | 120 mm – 170 mm (custom available) |
| Length | 1 m – 8 m (segmented connection for >6m) |
| Wire gauge | 2.5 mm – 4.5 mm |
| Rib quantity | 8 – 24 |
| Ring spacing | 250 mm – 500 mm (adjustable) |
| End cap thickness | 1.5 mm – 3.0 mm |
| Venturi ring | Yes (optional) |
| Max operating temperature | 450°C (for SS304/316) |
| Corrosion resistance | Excellent for pH 3–12 (SS316L best for acidic) |
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## Applications That Demand Stainless Steel Cages
- **Chemical & pharmaceutical dust** – Acidic/caustic gases.
- **Wet scrubber exhaust** – High humidity + corrosive compounds.
- **Incinerators & waste-to-energy plants** – High temperature + acidic condensate.
- **Food processing** – Sanitary requirements (no rust).
- **Offshore / marine dust collectors** – Salt spray corrosion.
- **Lithium battery material collection** – No ferrous contamination (use SS304/316).
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## Customization Options
We offer 100% custom SS filter cages based on your:
- Baghouse model (Donaldson, Camfil, Nederman, Schenck, etc.)
- Existing cage sample or drawing (PDF/DWG/STEP)
- Operating environment (temperature, humidity, chemical exposure)
- Bag diameter, length, and attachment type
Just send your requirements to:
📧 **info@suitagroup.com**
📱 **WhatsApp: +86 15957487562**
Our engineers will reply within 24 hours with a drawing and quotation.
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## Quality Assurance
- Each cage is checked for straightness, weld integrity, and dimensional accuracy.
- Stainless steel grade verified via PMI (Positive Material Identification) test.
- Passivation treatment ensures maximum corrosion resistance.
- Packed in reinforced wooden crates or steel pallets for sea/air freight.
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