HEBEIOUTAI ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD.
Trapezoidal Bag Cage
Trapezoidal Bag Cage
Trapezoidal Bag Cage
Trapezoidal Bag Cage
Trapezoidal Bag Cage
Trapezoidal Bag Cage

Trapezoidal Bag Cage

A Trapezoidal Bag Cage is a specialized type of filter support cage featuring a distinct trapezoidal (conical) shape that is wider at the top and narrower at the bottom. This engineered design ensures optimal filter bag deployment, prevents bag-to-bag contact in tight arrangements, and promotes more efficient dust dislodgement during pulse-jet cleaning cycles. It is the preferred cage design for high-efficiency dust collectors where maximizing filtration area and cleaning effectiveness are critical.

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Space-Optimizing Structural Support: The SENOTAY Trapezoidal Bag Cage

SENOTAY trapezoidal bag cages are engineered specifically for flat-bag and oval-bag pulse jet dust collectors, maximizing filtration surface area within tight footprint constraints. The precise flat-sided design maintains uniform fabric tension and prevents bag-to-bag contact during high-pressure cleaning cycles. This structural precision completely eliminates dead zones, lowers internal resistance, and ensures stable, high-volume airflow in compact industrial baghouses.

Why Leading Plants Choose SENOTAY:

Factory-Direct Pricing. Certified Quality. Dedicated Support.

  • Best Price Guarantee

    • We bypass third-party trading companies to deliver factory-direct wholesale pricing straight from our specialized forming lines. This direct-supply model guarantees the lowest total procurement cost for complex flat-cage designs.

  • Certified & Compliant

    • Manufactured in an ISO 9001 certified facility with full CE compliance, our trapezoidal cages feature tight dimensional tolerances and 100% burr-free automated spot welds. Available in galvanized steel, organic silicone coatings, or premium stainless steel to ensure maximum operational safety.

  • Fast, Free Shipping

    • To prevent expensive plant downtime, we maintain dedicated tooling for specialized oval and flat-sided geometries. Standard configurations and custom-engineered batch orders leave our regional logistics facilities within 48-72 hours.

Comprehensive After-Sales Support

  • Lifetime Technical Support: Expert engineering consultations for profile optimization, precise pitch alignment, and custom venturi integrations.

  • Full System/Parts Availability: Seamless factory access to matching flat-bag hardware, including raw envelope filter bags, top snap bands, and pulse valves.

  • Remote Troubleshooting: Fast diagnostics for field issues like flat-side mechanical deflection, localized corner wear, or shifting differential pressure.

Trusted by industrial environmental equipment and air filtration plants worldwide. Ready for yours.


 

Material Properties of Trapezoidal Bag Cage

 

  • Base Materials: The base      matrials are Carbon steel, mild steel and stainless steel (304 / 316L).

  • Surface      Treatment: Its surface is Galvanized, epoxy-coated, silicone-coated or      powder-coated

  • Temperature      Resistance: It is Up to 300°C that’s depending on coating type.

  • Corrosion      Resistance: completely Excellent under humid, acidic, or alkaline gas      environments.

  • Welding Type: Automatic spot      welding for high strength and precision.

  • Customization: Available in      various lengths, diameters, and wire thicknesses.

 


Types of Trapezoidal Bag Cage

 

Type No.

Material

Surface Coating

Connection Type

Operating Temp (°C)

TBC-01

Carbon steel

Hot-dip galvanized

Flange

250

TBC-02

Stainless steel 304

Natural finish

Thread

350

TBC-03

Alloy steel

Silicone coated

Snap ring

300

TBC-04

Mild steel

Powder-coated

Clamp

280

TBC-05

Galvanized

Zinc plating

Venturi connection

300

TBC-06

Reinforced steel

Double coating

Flange lock

330

TBC-07

Stainless steel 316

Acid-resistant

Quick release

360

TBC-08

Electro-galvanized steel

Bright finish

Collar

260

TBC-09

Carbon steel

Hybrid silicon coat

Welded

320

TBC-10

Custom alloy

Custom finish

Customized

350

 

 

Specifications Table


Cage Length (mm)

Top Diameter (mm)

Bottom Width (mm)

Coating Type

2000

150

120

Galvanized

2500

160

130

Epoxy powder

3000

180

140

Silicone coat

3500

190

150

Hot-dip zinc

4000

200

160

Fluorocarbon coat

4500

210

170

Bright zinc

5000

220

180

Custom

5500

230

185

Powder coated

6000

250

190

Anti-rust zinc

Custom

Custom

Custom

Custom

 


Main Features of Trapezoidal Bag Cage

 

  • Its Compact trapezoidal      structural design for efficient space utilization.

  • Fewer vertical      and horizontal bars ensuring better gas flow and      minimal friction on bag surface.

  • It is Enhanced stability      and structural strength compared to round cages.

  • Custom sizes,      coatings and connections for various dust collector      configurations.

  • Smooth and      seamless welds to reduce bag wear during pulsing or shaking operations.

  • Adaptable to      both pulse-jet and reverse-air cleaning systems.

 

 

 

Technical Advantages in Manufacturing Trapezoidal Bag Cage at Senotay

 

As a top Trapezoidal Bag Cage manufacturer in China, Senotay integrates advanced production technology with stringent quality management standards to guarantee performance, precision, and durability.

  • CNC-controlled      Welding Systems: precision joints with zero deformation.

  • High-performance      Surface Treatments: electrostatic powder coating,      galvanized or silicone finishes.

  • Customization      Excellence: adjustable wire counts, venturi configurations, and joint types.

  • In-house      R&D for Design Optimization: minimized airflow resistance and      enhanced dust removal efficiency.

  • ISO-Certified      Quality Standards: ensuring complete reliability      and long-term performance.

 


Why the Trapezoidal Bag Cage is Unique Compared to Other Bag Cages

 

The Trapezoidal Bag Cage offers a flat-sided geometry thats which improves dust dislodging efficiency and increases the effective filter bag area. The trapezoidal frame allows for tighter filter cartridge arrangements that is reducing system bulk while maintaining airflow capacity.

Additionally, this design reduces stress points on the filter fabric that preventing bag breakage during reverse pulse cleaning which making it a durable, energy-efficient and space-optimized alternative to circular or oval bag cages.

 


 

Why It’s Important to Have a Trapezoidal Bag Cage in Your Industry

 

  • Improves Dust      Removal Efficiency: Better air circulation reduces      system pressure drops.

  • Extends Bag      Life: Minimizes mechanical wear on filter media.

  • Maximizes Space      Utilization: Ideal for compact dust collector units.

  • Reduces      Maintenance Costs: Strong anti-corrosion and easy      to clean.

  • Ensures System      Stability: Uniform support structure reduces bag collapse risk.

By choosing Senotay’s Trapezoidal Bag Cage, industries achieve sustainable air pollution control and longer-term operational savings.

 

 

 

Physical and Mechanical Properties of Trapezoidal Bag Cage

  • Tensile      Strength: ≥ 340 Mpa.

  • Wire Diameter: 2.8–5.0 mm.

  • Weld Integrity: 100% fusion      checked.

  • Thermal      Resistance: Up to 350°C.

  • Corrosion      Resistance Test: ≥ 500 hours (salt spray test).

  • Dimensional      Tolerance: ±1 mm.

  • Hardness: 60–75 HRB.

 

Applications of Trapezoidal Bag Cage

Trapezoidal filter bag cages are essential components in dust collection and air filtration systems across diverse industries:

  1. Cement and      Concrete Plants.

  2. Steel Mills and      Foundries.

  3. Chemical and      Petrochemical Industries.

  4. Thermal Power      and Biomass Plants.

  5. Mining and      Quarrying Operations.

  6. Pharmaceutical      and Food Industries.

  7. Woodworking and      Furniture Production.

  8. Waste      Incineration and Recycling Plants.

 



Explore More Dust Removal Accessories with Senotay.com


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Dust Collector Bag Cage

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FAQs About Trapezoidal Bag Cage

Q1: What is the main benefit of trapezoidal design compared to circular bag cages?
Answer: The trapezoidal shape increases the filtration area which improves dust removal efficiency and reduces mechanical stress on filter bags.

Q2: What materials are available for manufacturing the Trapezoidal Bag Cage?
Answer: We offer carbon steel, galvanized steel, stainless steel 304/316 and customized alloys based on your application.

Q3: Can you manufacture custom sizes or configurations?
Answer:yes Absolutely, We specialize in custom bag cage manufacturing for different dust collector models and bag specifications.

Q4: How long does a Trapezoidal Bag Cage last?
Answer: With proper care and use, Senotay cages last up to 8–10 years which depending on operating environment and cleaning frequency.

Q5: Is the cage suitable for high-temperature applications?
Answer: Yes It is ,Our silicone and powder-coated cages perform well up to 350°C in continuous use.