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Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer of precision filtration solutions since 1998. Our Spiral Welded Stainless Steel Filter Tube is engineered for high-performance industrial filtration, offering superior strength, corrosion resistance, and consistent slot accuracy. With an annual export value exceeding US$5 Million, we supply global markets including North America, Europe, Southeast Asia, and the Middle East. This product is the ideal choice for demanding applications such as water treatment, petrochemical processing, and food & beverage filtration.
The spiral welded construction uses continuous V-shaped wire wound around a support profile, creating a robust, self-cleaning filtration element. Each tube is manufactured from high-grade stainless steel (304, 304L, 316, or 316L) to withstand harsh environments and high temperatures. The slot width can be precisely controlled from 0.02mm to 10mm, ensuring accurate particle retention while maximizing flow rates.
Key Features & Benefits
- High Mechanical Strength – The spiral welding process interlocks the wire with support rods, creating a durable structure that resists deformation under high pressure and backwash cycles.
- Precision Slot Control – Slot width tolerance of ±0.01mm ensures consistent filtration performance and reliable particle separation.
- Excellent Anti-Clogging Design – The V-shaped wire profile (wedge wire) allows particles to slide off the surface, reducing clogging and extending service life.
- Corrosion & Heat Resistance – Stainless steel materials provide resistance to acids, alkalis, and high temperatures up to 600°C (depending on grade).
- Customizable Dimensions – Diameter from 25mm to 1000mm, length up to 6000mm, with various end connections (flanged, threaded, or welded).
- Low Maintenance – Smooth surface finish and efficient backwashing capability minimize downtime and cleaning costs.
- Wide Application Range – Suitable for liquid filtration, gas filtration, catalyst recovery, sand control, and more.
Technical Specifications
| Parameter | Available Range |
|---|---|
| Material Grade | SS304, SS304L, SS316, SS316L, Duplex (upon request) |
| Outer Diameter | 25 mm – 1000 mm |
| Length | 100 mm – 6000 mm |
| Slot Width | 0.02 mm – 10 mm |
| Wire Cross Section | V-shaped (wedge wire) |
| Max Operating Temperature | Up to 600°C (depending on material) |
| End Connection | Flanged (ANSI/DIN), Threaded (NPT/BSP), Welded |
| Surface Finish | Pickled, Polished, Electropolished (optional) |
Why Choose Boli's Spiral Welded Filter Tube?
Our manufacturing facility in Hengshui, Hebei, China is equipped with advanced CNC welding machines and automated winding lines, ensuring consistent quality across every production batch. Each filter tube undergoes rigorous inspection including slot width measurement, pressure test, and material certification. We have supplied filtration solutions to industries such as power generation, chemical processing, mining, and municipal water treatment worldwide.
The spiral welded design offers a distinct advantage over conventional perforated tubes: higher open area (up to 60%) results in lower pressure drop and higher flow capacity. The continuous slot also prevents particle entrapment, making it ideal for applications requiring fine filtration (down to 20 microns).
Trust & Expertise
With over 25 years of manufacturing experience, Anping County Boli Hardware Wiremesh Products Factory has built a reputation for reliability and precision. Our annual export value of US$5-10 Million reflects the trust of international clients. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery. Our team provides technical support for product selection, custom design, and after-sales service. Contact us today to discuss your filtration requirements and request a sample or quotation.
Frequently Asked Questions
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Q: What is the typical slot width for water filtration?
A: For water filtration, common slot widths range from 0.1mm to 0.5mm. However, we can customize to your exact particle size requirement. -
Q: Can the filter tube be used for high-temperature applications?
A: Yes, stainless steel 316L can withstand up to 600°C. For extreme temperatures, we recommend Inconel or Hastelloy (available upon request). -
Q: How do you ensure the slot uniformity?
A: We use laser measurement and automated welding control to maintain tolerance of ±0.01mm. Each tube is inspected before shipment. -
Q: What end connections are available?
A: We offer flanged (ANSI, DIN, JIS), threaded (NPT, BSP), and plain ends for welding. Custom adapters can be fabricated. -
Q: Is the filter tube suitable for backwashing?
A: Absolutely. The spiral welded structure is robust enough to withstand repeated backwash cycles without deformation. -
Q: What is the minimum order quantity?
A: MOQ is typically 10 pieces, but we can accommodate smaller trial orders for first-time customers. -
Q: Do you provide material certificates?
A: Yes, we can provide mill test certificates for stainless steel materials upon request. -
Q: How long is the delivery time?
A: Standard sizes are shipped within 15-20 working days. Custom orders may take 25-30 days depending on complexity.
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