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Welcome to Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer since 1998, specializing in high-quality filtration solutions. Our 304L Stainless Steel Johnson Wedge Filter is engineered specifically for municipal water treatment applications, offering superior strength, corrosion resistance, and long service life. With a Mill Test Report included for every batch, we ensure full traceability and material compliance, giving you confidence in your system's performance. Backed by our annual export value of US$5–10 million and a global presence across North America, Europe, Asia, and Africa, we deliver reliable products that meet the rigorous demands of modern water treatment plants.
Product Overview
The Johnson Wedge Filter (also known as Vee Wire Screen or Wedge Wire Screen) is a continuous slot filter made from precision-rolled 304L stainless steel wire. Its unique V-shaped profile provides a self-cleaning surface, minimizing clogging and ensuring consistent flow rates. Ideal for intake screens, filter underdrains, and sand filter lateral systems, this filter is a critical component in municipal water treatment facilities.
Key Features & Technical Specifications
| Material | 304L Stainless Steel (low carbon, excellent weldability) |
| Slot Size | 0.1 mm – 10 mm (customizable to your exact requirements) |
| Diameter | 25 mm – 2000 mm (customizable) |
| Length | Up to 6000 mm per section (joints available for longer lengths) |
| Wire Profile | V-shaped (Johnson type) for minimal clogging |
| End Connections | Threaded, flanged, plain, or custom designed |
| Mill Test Report | Included for material traceability and quality assurance |
Advantages of Using 304L Stainless Steel
- Enhanced Corrosion Resistance – The low carbon content (max 0.03%) reduces carbide precipitation during welding, making it highly resistant to intergranular corrosion in aggressive water environments.
- Strong & Durable – Withstands high pressure and mechanical stress, ensuring long-term reliability in municipal water treatment systems.
- Hygienic & Easy to Clean – The smooth surface and V-shaped slot design prevent particle buildup, reducing maintenance downtime.
- Full Traceability – Each order comes with a Mill Test Report, verifying chemical composition and mechanical properties.
Applications in Municipal Water Treatment
- Surface Water Intake Screens – Filter out debris, algae, and suspended solids from rivers, lakes, and reservoirs before treatment.
- Filter Underdrain Systems – Used in rapid sand filters and multimedia filters to uniformly collect filtered water and backwash efficiently.
- Seawater Desalination Pre-filtration – Removes larger particles to protect RO membranes, extending their lifespan.
- Wastewater Treatment – Suitable for fine screening in primary and secondary treatment stages.
Why Choose Our Johnson Wedge Filter?
Our factory has been producing wire mesh products for over 25 years, with a dedicated team of engineers and skilled workers. We use advanced automatic welding machines to ensure consistent slot width and precise dimensions. Every filter is tested for slot accuracy and structural integrity before shipment.
- Custom Manufacturing – We can produce any diameter, length, slot size, and end connection to match your existing system.
- Competitive Pricing – Direct factory pricing eliminates middlemen, offering you cost-effective solutions without compromising quality.
- Rapid Delivery – With multiple ports (Tianjin, Qingdao, Shanghai, Foshan) and a strong logistics network, we ship globally within 15–30 days.
- Full Technical Support – Our team provides guidance on selection, installation, and maintenance.
Trust & Credibility
Anping County Boli Hardware Wiremesh Products Factory has been a reliable partner for clients in over 50 countries. Our annual export value of US$5–10 million reflects the trust our customers place in us. We regularly supply to municipal water treatment plants, engineering contractors, and system integrators across North America, South America, Europe, Middle East, Africa, and Asia. Each shipment is carefully packed in wooden crates to prevent damage during transit. We also offer trial orders for qualified buyers to evaluate our product quality firsthand.
Contact us today to discuss your specific requirements. Our team is ready to provide a quotation, technical drawing, or sample for your approval. Experience the difference of working with a manufacturer who puts quality and customer satisfaction first.
Frequently Asked Questions
Q1: What is the difference between 304 and 304L stainless steel for wedge filters?
304L has lower carbon content (max 0.03%) compared to 304 (max 0.08%). This makes 304L more resistant to intergranular corrosion after welding, making it ideal for water treatment applications where welding is common.
Q2: Can I get a sample before placing a bulk order?
Yes, we offer sample pieces (typically 200–300mm length) for a nominal fee, which is refundable upon bulk order. Contact our sales team to arrange.
Q3: What slot size should I choose for my municipal water intake?
Slot size depends on the particle size you need to remove. Common sizes for intake screens range from 1mm to 6mm. We can help you calculate based on your flow rate and water quality.
Q4: Do you provide the Mill Test Report for every batch?
Yes, a Mill Test Report (MTR) is included with each order, certifying the material's chemical composition and mechanical properties as per ASTM A240.
Q5: How are the filters packaged for export?
We use strong wooden crates or steel pallets, with protective wrapping to prevent scratches. Large-diameter screens are shipped individually crated.
Q6: What is the typical lead time?
For standard sizes, 15–20 working days. For custom dimensions, 20–30 working days, depending on complexity.
Q7: Can you customize the end connections (flange, thread, etc.)?
Absolutely. We can weld flanges, threads, or plain ends to your specifications. Provide drawings or dimensions, and we will match them.
Q8: Do you have stock for quick delivery?
We maintain a limited stock of common diameters (e.g., 100mm, 200mm, 300mm) in 1mm slot size. Please inquire about availability.
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