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Carbon Steel Stainless Steel Flat Bag Supporting Cage

Carbon Steel Stainless Steel Flat Bag Supporting Cage


What is a filter cage filter basket?

Bag cage is a structure that provides internal support for filter bags in the bag house system also known as filter cage or filter basket. In dust collection operations, bag cages provide a way to keep the filter bags open during the collection process and provide necessary support for the fabric during operation and cleaning.

Why choose SFFILTECH bag filter cage?

1. Reliable and excellent product quality

SFFILTECH has 3 production software and 22 advanced filter bag patents to ensure the production of best quality and efficient products.

SFFILTECH strictly follows ISO production standards and the regulations of automated production lines.

The production factory has a set of quality inspection procedures and a team of assisting personnel for pre-production, during production and post-production to ensure the highest quality of our products.

If required, a third-party laboratory quality inspection reports for each batch of products can be provided.

2. Convenient and stable shipment:

Stable and continuous supply and production. Large scale of storage of raw materials and accessories.

Independent warehouse provides a large amount of storage space for shipment stock.

Our company uses highly efficient transportation and courier services.

SFFILTECH has over 10 years of experience as a manufacturer and supplier.

3. Safe and reliable payment transactions:

Since its establishment, SFFILTECH has been cooperating with the most reliable banks in China, ensuring the safe funds transfer.

SFFILTECH supports multiple payment methods and can collaborate with third-party banks and enterprises to ensure the security of customer payment.

“Integrity has always been one of the most important concern of SFFILTECH”

4. Excellent pre-sales and after-sales service:

SFFILTECH has multiple experienced sales personnel providing 24-hour service.

SFFILTECH can provide instant online after-sales support as well as overseas after-sales services.

SFFILTECH has multiple agents worldwide and branches in some regions that can provide services in person.

How to choose a filter bag cage?

When old filter cage requires replacement:

Once you remove the filter cage from the filter housing, you can just need to take some measurements and pictures and send them to us. We would be able know your filter cage specifications using this method.

We can make a sample for you to test its fitment with your filter bag cage house within a few days.

When you want to install a new filtration system and need some advice:

We will send you a configuration form to fill it according to your specifications and conditions like temperature, chemical content and others. After you send it back to us .We will inform you about what kind filter cage is suitable for you.

Our engineers can arrange online meeting with your engineer or provide you with the configuration based on your specifications

If you are able send us the samples, we can analyses the sample filter cage’s material and structure.

We can make one sample for you to try it in your bag house within a few days.

Basic commercial terms of filter cage filter basket:

Place of OriginShanghai, China
CertificationISO, FDA
Product ItemOvals filter cage/ flat filter basket
Minimum Order Quantity1pcs  
PriceContact us to get an exact quotation
Packaging DetailsNude packed
Delivery Time7-30days after deposit. According to the specific order quantity. 1-7days for sample
Port of shipmentShanghai, Ningbo, Qingdao, Lianyungang, Guangzhou, Shenzhen or Others
Payment Terms30% Deposit, balance TT on copy B/L. Other payment methods can be negotiated according to the order requirements
Supply Ability:100000pcs/month
OEM/ODMYes, we can support customized, like size, shape, material, treatment, structure
After-sales Services1 year warranty after we both sign the plant investigation usually for this one

What are the materials of the filter bag cage?

According to the customer's demand and specifications, the venturi and cages are available in the following



Raw steel S235JR

Pre-galvanized steel

AISI 304L stainless steel

AISI 316L stainless steel


Cataphoresis treatment can be provided in addition.

What surface treatments do filter cages have?

Raw materials receive the following treatments:

Spray molding


Packling and Passivation


Bag cage structure diagram


GCollar type / VenturiABasket lengthERing Distance
NNumber of wireBOuter diameterFBottom Diameter
CNumber of longitudinal wires Longitudinal wire diameterDRing wire diameter Number of ring threads----

Filter bag cage shape/ Filter cage’s number of longitudinal wires

Usually, the length of the bag cage varies from 5 meters to 12 meters;

The number of several longitudinal wires is usually 6, 8, 10, 12.14, 16, 20, and 24;

The distance between rings is 50, 100, 150, 200, or 250;

The following figure shows the corresponding relationship between the conventional bag cage shape and the number of longitudinal wires.


Schematic diagram of filter bag cage head style

There are 4 styles of bag cage heads and 1 combination with a venture.


What is a Flat filter cage?

Flat bag cage refers to a bag cage used for flat, trapezoidal, oval, and other non-circular filter bags.

Standard ovals filter cage扁 小图 1The standard cage consists of an upper flange and a lower end cap and is broadly used for filter sleeves in industrial dust collectors.Material:  Aluminum
Raw steel S235JR
Pre-galvanized steel
AISI 304L stainless steel
AISI 316L stainless steel
number of vertical wires: 8, 10, 16
asphalt producers and waste-to-energy plants.
Trape zoidal filter bag cage扁 小图 2The support is utilised for systems with a bag filter and, thanks to its extension, manages to increase the extent of the filter surface.Material:  Aluminum
Raw steel S235JR
Pre-galvanized steel
AISI 304L stainless steel
AISI 316L stainless steel
fumes and industrial powders
Flat filter cage扁 小图 3This new filter cage shape with a flat bag extends the filtration space for dust collection, ensuring greater efficiency.Material:  Aluminum
Raw steel S235JR
Pre-galvanized steel
AISI 304L stainless steel
AISI 316L stainless steel
certain baghouses with pulse jets
Oval filter sleeve cages with joint扁 小图 4Revised on the basis of standard bag cages, with new connection methods for easier transportation and installationMaterial:  Aluminum
Raw steel S235JR
Pre-galvanized steel
AISI 304L stainless steel
AISI 316L stainless steel
number of vertical wires: 8, 10, 16
asphalt, energy, cement and food industries, amongst others

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