Dust Filter Bag Quotation Comparison: Cost and Specification Checklist
Compare the Same Specification First
A useful price comparison starts with the same operating conditions and the same filter-bag specification. Ask every supplier to quote against the same gas temperature, dust characteristics, dimensions, top and bottom construction, surface treatment, quantity, packing method and delivery terms.
1. Filter Media and Treatment
Confirm the fiber, scrim, fabric weight, air permeability and surface treatment. If a membrane, antistatic treatment, water-and-oil repellency or special finish is required, it should be listed separately. A lower quotation may simply reflect a different media construction.
2. Dimensions and Construction
Compare bag diameter, length, tolerances, snap-band or flange details, bottom design, reinforcement, seam type, thread and cage compatibility. Replacement bags should be checked against an approved drawing or a verified sample before production.
3. Inspection and Documentation
Define the required incoming-material records, dimensional inspection, seam checks, sampling plan and batch documents. Certification and testing requirements should be agreed before the quotation is finalized.
4. Quantity, Packaging and Logistics
Unit cost can change with order quantity, setup requirements, packaging, freight, Incoterms and delivery schedule. Compare the complete delivered scope rather than an isolated unit price.
5. Operating and Replacement Risk
Service life cannot be guaranteed from the filter media name alone. Differential pressure, cleaning settings, moisture, chemical exposure, abrasion, installation fit and shutdown conditions all affect performance. Include replacement labor and downtime risk when evaluating alternatives.
RFQ Checklist
Dust collector model and application; gas composition, temperature and moisture; dust type and loading; bag dimensions and top/bottom construction; cage dimensions and cleaning method; current media and surface treatment; quantity, packing, delivery location and required documents.
For North American project coordination, visit FiltEdge. For filter-media manufacturing and engineering information, visit SFFILTECH.
