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Help CenterFactory Tested Needle Felt Triangular Filter Bag With 2-Year Warranty
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Introducing the Factory Tested Needle Felt Triangular Filter Bag – a high-performance filtration solution designed for demanding industrial environments. Manufactured by Anping County Boli Hardware Wiremesh Products Factory, a trusted manufacturer established in 1998, we combine decades of expertise with rigorous quality control. Each filter bag is factory-tested to ensure consistent filtration efficiency and durability, backed by a 2-year warranty for your peace of mind. Our triangular design optimizes the use of space in pulse-jet dust collectors, providing superior dust capture and extended service life.
Our needle felt fabric is carefully selected from premium materials such as polyester, polypropylene, or Nomex, offering excellent resistance to abrasion, chemicals, and high temperatures. The triangular shape allows for easy installation and maximum filtration area within the same housing, reducing pressure drop and energy consumption. Whether you are in cement, steel, power generation, or chemical processing, these filter bags are engineered to meet the strictest emission standards while maintaining high airflow.
Key Features & Technical Specifications
- Material: 100% needle felt with high tensile strength – available in polyester, polypropylene, aramid, etc.
- Shape: Triangular design for optimal dust cake release and reduced cleaning frequency.
- Filtration Efficiency: Up to 99.9% (depending on micron rating) – factory tested to ensure performance.
- Temperature Resistance: Standard up to 150°C; optional high-temperature versions up to 260°C.
- Warranty: 2-year factory warranty covering defects in materials and workmanship.
- Customization: Length, width, collar type, and snap ring size can be tailored to your baghouse.
| Parameter | Value |
| Material | Needle felt (polyester, polypropylene, etc.) |
| Shape | Triangular |
| Filtration Precision | Customizable (1-100 micron) |
| Operating Temperature | Up to 150°C (standard) / Up to 260°C (optional) |
| Weight (gram per square meter) | 400-800 g/m² (customizable) |
| Installation Type | Snap ring, collar, or custom |
| Warranty | 2 years |
Why Choose Our Triangular Filter Bag?
- Factory Tested Reliability: Each bag is inspected before shipment to ensure no leaks, proper stitching, and consistent filtration.
- 2-Year Warranty: We stand behind the quality of our product. If a manufacturing defect occurs, we will replace it free of charge.
- Customizable Design: We offer custom sizes, grommets, rings, and materials to fit your existing baghouse perfectly.
- Excellent Dust Cake Release: The triangular shape minimizes bridging and reduces cleaning air pressure, saving energy and extending bag life.
- Global Export Experience: With annual exports of US$5-10 million, we have shipped to North America, Europe, Asia, Africa, and Oceania.
Our factory in Hengshui, Hebei, China, utilizes advanced needle punching and heat-setting technology to produce filter bags with consistent pore structure and high mechanical strength. The triangular design is particularly effective in pulse-jet dust collectors, as it provides a larger filtration area per volume compared to round bags, resulting in lower pressure drop and higher dust holding capacity. Additionally, the reinforced stitching at the seams and cuffs ensures long-term durability under harsh operating conditions.
For customers requiring specific chemical resistance or high-temperature applications, we can provide needle felt made from PTFE, PPS, or other high-performance fibers. Our engineering team works closely with you to recommend the optimal material and construction for your process. All bags are available with optional surface treatments such as singeing, calendaring, or PTFE coating to enhance filtration efficiency or release properties.
Trust & Customer Assurance
As a factory established in 1998, Anping County Boli Hardware Wiremesh Products Factory has been a reliable partner in the filtration industry for over 25 years. Our annual export value of US$5-10 million reflects the trust international customers place in our products. We serve markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our main ports of shipment include Tianjin, Qingdao, Shanghai, Foshan, ensuring efficient logistics worldwide.
We are committed to providing not only high-quality filter bags but also excellent after-sales support. Our team is available to answer technical questions, assist with installation guidance, and recommend the best filter bag for your specific application. With a 2-year warranty and factory testing, you can be confident in the performance and longevity of our triangular filter bags.
Ready to upgrade your dust collection system? Contact us today for a quote or sample. We look forward to being your long-term partner in filtration.
Frequently Asked Questions (FAQ)
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Q: Can you provide custom sizes for my baghouse?
A: Yes, we offer fully customizable dimensions including length, width, and collar/ring type. Please provide your existing bag dimensions or a drawing, and we will manufacture accordingly. -
Q: What is the maximum operating temperature for standard polyester needle felt?
A: Standard polyester needle felt can withstand continuous temperatures up to 150°C (302°F). For higher temperatures, we recommend polypropylene (up to 95°C) or aramid/Nomex (up to 200°C). PTFE felt is available for extreme temperatures up to 260°C. -
Q: How is the filtration efficiency of your triangular filter bags?
A: Our bags are factory tested and can achieve filtration efficiency of up to 99.9% for particles down to 1 micron, depending on the fabric weight and finish. We can also provide surface-treated options for enhanced efficiency. -
Q: Does the 2-year warranty cover all defects?
A: The warranty covers manufacturing defects such as faulty stitching, material delamination, or premature failure under normal operating conditions. It does not cover damage caused by improper installation, chemical attack, or excessive temperature beyond the specified limits. -
Q: Are your filter bags resistant to chemicals and moisture?
A: Polyester has good resistance to acids and organic solvents but is vulnerable to alkalis and hydrolysis. For high moisture or chemical environments, we recommend polypropylene or PTFE felt. Our team can advise on the best material for your specific gas composition. -
Q: What is the typical lead time for an order?
A: For standard sizes, lead time is 15-20 days after order confirmation. For custom sizes, it may be 20-30 days. We can expedite urgent orders upon request. -
Q: Do you provide samples for testing?
A: Yes, we offer free samples (shipping cost may apply) so you can evaluate the quality and fit before placing a bulk order. Contact us with your requirements. -
Q: How do I install the triangular filter bag correctly?
A: Installation instructions are provided with each shipment. Typically, triangular bags are inserted into the cell plate and secured with a snap ring or collar. Ensure the bag is not creased and the seal is tight. We also offer video guidance upon request.
For any further inquiries, please reach out to our sales team. We are here to help you achieve optimal dust collection performance.
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