Filter Bag Cage Manufacturer in Kolkata

S. N . Welding Works is India’s leading bag cages manufacturer for all major air pollution control systems. These cages are supplied to OEMs and end users in India .

At  S. N . Welding Works , we manufacture the best quality filter bag cages from a variety of metals to suit our customers’ requirements. Additionally these cages may have a specialised coating applied, for critical applications, using advanced techniques.

In order to achieve this  S. N . Welding Works  has invested in ‘state of the art’ machinery backed up with rigorous QA and QC procedures, which also fall in line with our ISO Certification. We aim at providing the customers a single source of obtaining filtration products and services with fully automated and advanced cage designs.

To fulfil the customer’s needs on a short notice along with full satisfaction,  S. N . Welding Works manufactures a complete range of standard as well as non-standard cage designs with variety configurations like- circular, diamond, oval, flat, star, fish, Pocket / Envelope and custom OEM shaped designs. A variety of cages are manufactured from metal-grades of mild steel, stainless steel and other special alloys.

We also have a specialized platform for manufacturing of cages which automates the production process performed with the help of PLC controlled welding machines to ensure efficient and high quality products. These machines consist of multiple spot heads which help to reduce the lead time to a minimum and increase the production rate. Meticulous QA procedures involving cages and component inspections are carried out in all the stages of production. Filter cages manufactured at  S. N . Welding Works are safely dispatched across India.

Material of filter bag cage:

1. Galvanized steel
2. Stainless steel 304, 316, 316L and etc.
3. Silicon power plated

Provide us the data of filter bag cage:

The quality of the filter cage has a direct bearing on the filtering state and service life of a filter bag. So the detailed and accurate data can ensure the normal use of the product to the maximum extent. It’s great that you can provide design drawings, or if you provide data according to the following information.

1. Filter cage material and size
2. Quantity of vertical wires
3. Space of Horizontal wires
4. Wire diameter
5. Cell plate sizes of dust collector or baghouse
   

Filter Cage Parts

The filter bag cage is mainly composed of vertical wire, horizontal wire, cage top, cage bottom, cage joint, and cage v

Vertical Wire & Horizontal Wire

Filter cages on the market are mostly consisted of 10, 12, or 20 vertical wires. The number of vertical wires depends on the application purpose and the texture of the filter bag. The filter cage with 20 longitudinal wires is generally used to support filter bags that require strong support, like fiberglass woven bags. As for the cage with 10 or 12 vertical wires, it is more suitable for filter bags with lighter weight.

The existence of the horizontal wire is to enhance the overall stability and support strength of the filter cage. It is equally welded around the circumference of the cage. The spacing distance between two horizontal wires is generally 150-200mm.

Cage Top & Cage Bottom

Filter cage top and bottom designs are available in several styles. 

Top load bag filter cages: T-flange, ring top, or rolled flange tops.

Bottom load bag filter cages: split collar or split ring top. 

As for the connection, you can choose to have them welded or interlocked with the cage wire.

Cage Venturi

The venturi is a component used to accelerate the pulsed air in the filter bag for more efficient cleaning. It has a variety of designs that can be applied in all-diameter filter cages. For different applications, it can be made of aluminum, carbon steel, galvanized and stainless steel. Cage venture is optional. Typically, the longer the filter bag, the more important it is to have a venturi.

age Joint

Cage joint is a connector between two filter cages for supporting extra-long filter bags. S. N. Welding Works offers different styles of cage joints for customers to choose from.

Woven Wire: commonly used due to easy installation;

Double Ring: widely used in air manifolds for treating industrial dust and flue gas;

Double Groove: firm connection, strong support, smooth edge, reducing the rate of filter bag damage;