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Help Center316L Stainless Steel Helically Perforated Tube 20mm OD 0.8mm Slot Width ASTM A269
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As a trusted manufacturer since 1998, Anping County Boli Hardware Wiremesh Products Factory is proud to offer the 316L Stainless Steel Helically Perforated Tube 20mm OD 0.8mm Slot Width ASTM A269. This product is engineered for demanding filtration and separation applications where corrosion resistance, mechanical strength, and precision slot control are critical. With annual export value exceeding US$5 million and shipments to markets across North America, South America, Europe, Asia, and Oceania, our helically perforated tubes are widely recognized for their consistent quality and reliable performance.
Our 316L stainless steel helically perforated tubes are manufactured using advanced CNC-controlled perforation equipment, ensuring precise slot dimensions and smooth inner/outer surfaces. The helical pattern provides uniform flow distribution and minimizes clogging, making it ideal for water treatment, food processing, and chemical filtration. Each tube meets ASTM A269 standards for seamless and welded austenitic stainless steel tubing, guaranteeing excellent ductility and weldability.
Key Features & Technical Specifications
| Parameter | Value |
|---|---|
| Material | 316L Stainless Steel (Low Carbon) |
| Outer Diameter | 20mm (0.787 inches) |
| Slot Width | 0.8mm (0.031 inches) |
| Slot Pattern | Helical (continuous spiral) |
| Standard | ASTM A269 |
| Wall Thickness | Customizable (1.0mm – 3.0mm) |
| Length | Customizable (up to 6 meters) |
| Surface Finish | Pickled & Passivated (optional) |
Product Benefits & Advantages
- Superior Corrosion Resistance: 316L stainless steel contains molybdenum, offering excellent resistance against chlorides, acids, and harsh chemicals. Ideal for marine, chemical, and pharmaceutical environments.
- Precision Slots for Consistent Filtration: The helical perforation ensures uniform slot width (0.8mm) with minimal deviation, providing reliable particle retention and high throughput.
- High Strength & Durability: ASTM A269 compliance guarantees mechanical properties such as tensile strength (≥485 MPa) and yield strength (≥170 MPa). Suitable for high-pressure applications.
- Anti-Clogging Design: The spiral slot geometry reduces blinding and allows easy backwashing, extending service life and reducing maintenance costs.
- Customizable Dimensions: Wall thickness, length, and slot width can be tailored to your specific filtration requirements. Contact us for custom orders.
- Wide Application Range: Used in water well screens, oil & gas downhole filters, food processing strainers, chemical reactor internals, and wastewater treatment systems.
Why Choose Boli Hardware Wiremesh?
With over 25 years of manufacturing experience, our factory in Hengshui, Hebei, China, has supplied helically perforated tubes to clients across North America, Europe, the Middle East, and Southeast Asia. Our annual export value of US$5–10 million reflects the trust of global buyers. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery. All products undergo rigorous quality control – from raw material inspection to slot dimension verification. We are committed to providing competitive pricing without compromising quality.
Whether you need a standard 20mm OD tube with 0.8mm slots or a customized solution, our team is ready to assist you. We offer free samples upon request and technical support to help you select the optimal configuration for your project. Invest in a reliable filtration solution – choose Boli’s helically perforated tubes.
Frequently Asked Questions (FAQ)
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Q: What is the difference between 316 and 316L stainless steel?
A: 316L has lower carbon content (≤0.03%) which reduces carbide precipitation during welding, offering better corrosion resistance in welded areas. Our tube is made of 316L for superior performance. -
Q: Can I get a different slot width or outer diameter?
A: Yes, we offer customization. Slot widths from 0.3mm to 3.0mm and outer diameters from 10mm to 100mm are available. Please provide your specifications. -
Q: What is the maximum length per tube?
A: Standard lengths are up to 6 meters. For longer lengths, please inquire for feasibility. -
Q: Is this tube suitable for high-temperature applications?
A: 316L stainless steel can withstand temperatures up to 870°C (1600°F) in continuous service, but actual performance depends on the environment. Consult our engineers for specific conditions. -
Q: How do you ensure the slots are uniform?
A: Our CNC helically perforating machines maintain tolerance within ±0.05mm. Each tube is inspected with optical measuring equipment before shipment. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ is typically 50 pieces for standard sizes, but smaller quantities may be accepted for sample orders. -
Q: Do you provide free samples?
A: Yes, we offer free samples for evaluation (shipping costs may apply). Contact us to arrange. -
Q: How long does shipping take?
A: Production time is 7–15 working days after order confirmation. Shipping time depends on destination (usually 15–35 days via sea).
Contact us today to discuss your requirements or request a quotation. Our experienced sales team is ready to provide you with a competitive solution for your filtration needs.
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