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Help Center304 Stainless Steel Spiral Screen Tube for Water Treatment Plant Sand Filter 0.5mm Slot
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer specializing in industrial filtration components. With annual export values ranging from US$5 million to US$10 million, we serve global markets including North America, South America, Europe, and Asia. Our 304 Stainless Steel Spiral Screen Tube with a precise 0.5mm slot width is engineered for high-performance sand filter systems in water treatment plants. This product combines durability, corrosion resistance, and excellent filtration efficiency, making it a reliable choice for demanding water purification applications.
The spiral design ensures uniform slot distribution and structural integrity under high pressure. Each tube is manufactured from premium 304 stainless steel, offering outstanding resistance to rust, chemicals, and abrasion. The 0.5mm slot opening effectively traps sand particles while allowing maximum water flow, reducing maintenance downtime. Our screen tubes are available in customizable diameters and lengths to fit existing filter vessels, with threaded or flanged ends for easy installation.
Key Features & Technical Specifications
- Material: 304 Stainless Steel – excellent corrosion resistance and long service life.
- Slot Width: 0.5mm (±0.05mm) – precise filtration, prevents sand bypass.
- Slot Shape: Continuous spiral – self-cleaning effect, reduces clogging.
- Structural Strength: High tensile strength, withstands backwash pressures up to 6 bar.
- Customization: Diameter from 20mm to 200mm, length up to 3000mm, end connections as per request.
- Open Area: Typically >30% – ensures low pressure drop and high flow rates.
- Surface Finish: Pickled and passivated for enhanced anti-rust performance.
| Parameter | Value |
| Material Grade | 304 Stainless Steel (1.4301) |
| Slot Width | 0.5mm (other sizes: 0.2mm, 0.3mm, 1.0mm available) |
| Outer Diameter | 50mm, 60mm, 100mm (customizable) |
| Tube Length | 500mm, 1000mm, 1500mm (customizable) |
| End Connection | Threaded (BSP/NPT) or Flanged (ANSI/DIN) |
| Operating Temperature | Up to 400°C (752°F) |
| Flow Rate | Varies with size; typically 10–30 m³/h per tube |
Advantages for Water Treatment Plants
Our spiral screen tubes are specifically designed to replace traditional wedge wire or perforated pipe in sand filters. The continuous spiral slot provides a self-cleaning effect during backwash, preventing media blockage and extending filter runs. Compared to slotted pipes, our screen tubes offer higher open area (up to 35%) and better flow distribution, resulting in lower energy consumption and improved water quality. The 304 stainless steel material ensures compatibility with potable water, wastewater, and industrial process water applications.
Key customer benefits include:
- Reduced Maintenance: Self-cleaning slots minimize the need for manual cleaning.
- Long Lifespan: Corrosion-resistant 304 stainless steel lasts 10+ years in typical conditions.
- Easy Installation: Customizable ends fit any filter vessel without modification.
- Cost-Effective: Lower pressure drop saves energy on pumps.
- Versatile: Suitable for sand, gravel, carbon, and multimedia filters.
Trust & Reliability
Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a trusted partner for filtration solutions worldwide. With annual exports exceeding US$5 million, we have supplied screen tubes to water treatment plants, chemical facilities, and mining operations across North America, Europe, Southeast Asia, and Africa. Our strict quality control ensures each tube meets precise slot tolerances and surface finish standards. We offer free samples for testing, OEM/ODM service, and technical support to help you select the optimal size and configuration. Contact us today for a quote or to discuss your specific requirements. We are committed to delivering high-quality products that enhance your filtration system performance.
Frequently Asked Questions
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Q: What is the exact slot width tolerance?
A: The slot width is controlled within ±0.05mm to ensure consistent filtration performance. -
Q: Can you provide tubes with different slot widths, e.g., 0.3mm or 1.0mm?
A: Yes, we offer slot widths from 0.2mm to 3.0mm. Please specify your requirement. -
Q: How do I determine the correct diameter and length for my filter?
A: We recommend measuring the existing filter vessel's lateral connections or provide the vessel's internal diameter and height. Our technical team can assist. -
Q: Is the spiral screen tube suitable for high-pressure backwash?
A: Yes, the tube is designed to withstand backwash pressures up to 6 bar (87 psi). Higher pressure options are available upon request. -
Q: What end connections are available?
A: We offer threaded (BSP, NPT), flanged (ANSI, DIN), or plain ends for welding. Custom connections are also possible. -
Q: How long is the delivery time?
A: For standard sizes, delivery is 7–15 days after order confirmation. Custom orders may take 15–25 days. -
Q: Do you provide samples?
A: Yes, we offer free samples for evaluation. The buyer pays shipping. -
Q: What is the minimum order quantity?
A: MOQ is 10 pieces for standard sizes. Custom orders may have different MOQ.
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