PTFE750 Filter Bag DIA.133 x 2000 mm for Industrial Dust Collection: Specification and Procurement Notes
Product: Industrial dust collector filter bag
Requested specification: DIA.133 x 2000 mm PTFE / PTFE750
Quantity in inquiry: 100 PCS
Application: Cement, mineral, ceramic, boiler, kiln, and general industrial dust collection systems
This product note is prepared for buyers who need to source PTFE filter bags for industrial dust collection. The inquiry specifies FILTER BAG DIA.133 x 2000 PTFE, with later clarification that the offered item is PTFE750. The important point is not only the words "filter bag", but the exact bag diameter, bag length, fabric material, weight grade, installation top/bottom style, certificate requirement and country of origin.
Confirmed inquiry data:
Item: Filter Bag
Dimension: diameter 133 mm x length 2000 mm
Material: PTFE / PTFE750
Quantity: 100 pieces
Quotation requirement: material certificate, brand and country of origin
Use type: industrial dust filtration / baghouse filter bag
Why PTFE750 matters:
PTFE filter bags are normally selected for high chemical resistance, good release of sticky dust, and higher temperature service than common polyester filter media. PTFE750 usually means a PTFE filter cloth grade around 750 g/m2. For a buyer, this number is important because it affects strength, permeability, dust cake release, service life and price. A supplier should not quote only "PTFE bag" without confirming fabric weight, treatment and construction.
Main technical points to confirm:
1. Diameter: 133 mm.
2. Length: 2000 mm.
3. Fabric: PTFE or PTFE750 as required.
4. Fabric weight: confirm actual g/m2 on certificate.
5. Sewing thread: PTFE thread is normally preferred for PTFE bags.
6. Top construction: snap band, ring, cuff, flange, rope or other fixing style must be confirmed.
7. Bottom construction: disc bottom, reinforced bottom or custom style must be confirmed.
8. Surface treatment: heat setting, singeing, calendering, membrane or other treatment if required.
9. Operating temperature: confirm normal and peak temperature.
10. Dust type: cement dust, kiln dust, mineral powder, chemical dust or other process dust.
11. Certificate: material certificate and COO requested.
Why buyers should send a sample or drawing:
A filter bag is not only a tube of fabric. The same diameter and length can still have different top rings, snap bands, seams, bottoms and reinforcement. If the top connection does not match the cagesheet, the bag may leak dust or fail during pulse cleaning. If the bottom shape is wrong, the bag may rub against the cage or adjacent bags. For replacement projects, the buyer should provide a used bag sample, a clear photo of the top and bottom, and a drawing with all dimensions.
Procurement checklist:
- Confirm DIA.133 x 2000 mm finished size, not only cloth cutting size.
- Confirm PTFE750 fabric weight and certificate.
- Confirm whether PTFE membrane is required.
- Confirm sewing thread material.
- Confirm snap band / ring / cuff / bottom design.
- Confirm bag cage diameter and cagesheet hole size.
- Confirm working temperature, peak temperature and gas chemistry.
- Confirm quantity 100 PCS and packing method.
- Ask supplier to mark brand and country of origin on quotation.
Application notes:
PTFE filter bags are often used in process conditions where polyester or acrylic media may not be suitable. Typical reasons include higher temperature, chemical corrosion, sticky dust or the need for improved dust release. In cement and mineral plants, baghouse performance depends on fabric selection, air-to-cloth ratio, pulse pressure, cage quality and correct installation. A good quotation should therefore include fabric data, dimensional drawing, construction drawing and material certificate.
Summary:
DIA.133 x 2000 mm PTFE750 filter bag is a specific industrial dust collector consumable, not a generic textile item. The buyer should verify fabric grade, bag construction and certificate before ordering. For this inquiry, the confirmed public product details suitable for quotation are PTFE750 material, 133 mm diameter, 2000 mm length, 100 pieces, with material certificate, brand and country of origin requested.