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Help Center316L Stainless Steel Helically Perforated Tube 3 Inch OD 2mm Wall 10mm Pitch 50% Open Area
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer with over 25 years of experience in metal perforation and wire mesh products. With an annual export value of US$5–10 million, we serve clients across North America, South America, Europe, Asia, and Oceania. Our 316L Stainless Steel Helically Perforated Tube (3 inch OD, 2mm wall thickness, 10mm pitch, 50% open area) is engineered for demanding filtration and separation applications where corrosion resistance, precise flow control, and structural integrity are critical.
This product combines the superior corrosion resistance of 316L stainless steel with a unique helical perforation pattern that ensures uniform distribution of fluids and gases. The 50% open area provides maximum throughput while maintaining mechanical strength. The 2mm wall thickness offers durability for high-pressure environments, and the 10mm pitch guarantees consistent spacing for predictable performance.
Whether you are designing a chemical filter, a water treatment system, or a petrochemical reactor, our helically perforated tube delivers reliable results. Below we detail its technical specifications, advantages, and how it can benefit your operation.
Key Features & Technical Specifications
| Parameter | Specification | Benefit |
|---|---|---|
| Material | 316L Stainless Steel (UNS S31603) | Excellent resistance to chlorides, acids, and extreme temperatures; low carbon content reduces weld decay. |
| Outer Diameter | 3 inch (76.2 mm) | Standard size compatible with most piping systems; easy to integrate. |
| Wall Thickness | 2 mm | Provides robust mechanical strength for high-pressure applications (up to 150 psi depending on length). |
| Perforation Pattern | Helical (spiral) with 10 mm pitch | Ensures even flow distribution and reduces clogging; ideal for rotary or vibrating filters. |
| Open Area | 50% | High flow capacity while maintaining material retention; optimized for separation efficiency. |
| Length | Customizable (standard up to 6 meters) | Reduces welding joints; available in exact lengths to minimize waste. |
| Surface Finish | Annealed & pickled (2B finish optional) | Smooth surface resists fouling and is easy to clean; improves corrosion resistance. |
Why Choose Our Helically Perforated Tube?
- Superior Corrosion Resistance: 316L stainless steel contains molybdenum, providing excellent protection against pitting and crevice corrosion in chloride-rich environments such as seawater or chemical plants.
- Precise Flow Control: The helical pattern with 10mm pitch and 50% open area enables consistent fluid/gas distribution, critical for applications like catalyst support or air sparging.
- High Mechanical Strength: 2mm wall thickness allows the tube to withstand high differential pressures and mechanical loads without deformation.
- Reduced Clogging: The spiral arrangement of perforations promotes self-cleaning in many filtration setups, extending operational intervals.
- Versatile Customization: We offer custom lengths, end connections (threaded, flanged, beveled), and additional surface treatments (electropolishing, passivation) upon request.
- Strict Quality Control: Each tube is inspected for dimensional accuracy, open area percentage, and weld integrity (if applicable).
Typical Applications
- Filtration & Separation: Used in wedge wire screens, filter elements, and continuous slot filters for water, oil, and chemicals.
- Chemical Processing: Distributor plates, catalyst support grids, and reactor internals.
- Oil & Gas: Downhole screens, sand control filters, and pipeline strainers.
- Food & Beverage: Juice extraction, beer brewing, and edible oil filtration where hygiene is critical.
- Environmental Engineering: Water treatment, aeration systems, and waste recycling equipment.
Trust & Reliability from a Proven Manufacturer
Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a trusted partner for global industrial clients. Our annual export value of US$5–10 million reflects the confidence our customers place in our products. We ship from major Chinese ports (Tianjin, Qingdao, Shanghai, Foshan) to markets worldwide, including North America, Europe, Southeast Asia, Africa, and Oceania.
To ensure consistent quality, we employ advanced CNC perforation machines and conduct 100% dimensional inspection before shipment. Our team of 50+ experienced workers and engineers can handle custom orders with lead times as short as 15 days for standard sizes.
We invite you to request a quote or sample to test the performance of our 316L stainless steel helically perforated tube. Contact us today to discuss your specific requirements—we are ready to support your project with the highest quality products and professional service.
Frequently Asked Questions (FAQ)
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Q: What is the difference between 316 and 316L stainless steel?
A: 316L has a lower carbon content (max 0.03%) compared to 316 (max 0.08%). This makes 316L more resistant to intergranular corrosion after welding, making it ideal for welded assemblies. -
Q: Can you supply tubes with flanged or threaded ends?
A: Yes, we offer custom end connections including flanged, threaded (NPT/BSP), beveled, or grooved ends. Please specify your requirements when ordering. -
Q: What is the maximum length you can produce?
A: Standard maximum length is 6 meters (20 feet). Longer lengths can be produced on request, subject to manufacturing feasibility. -
Q: How do you ensure the open area is exactly 50%?
A: We use CNC-controlled perforation machines that precisely control hole size, pitch, and pattern. Each batch is tested for open area percentage using optical measurement tools. -
Q: Is this tube suitable for high-temperature applications?
A: 316L stainless steel maintains good mechanical properties up to 800°C (1470°F) in continuous service. For higher temperatures, please consult our engineers. -
Q: Do you offer sample testing before bulk order?
A: Absolutely. We can provide samples (cut pieces) for your evaluation. Sample cost is usually refundable upon bulk order placement. -
Q: What is the typical lead time for an order of 100 pieces?
A: For standard sizes (3" OD, 2mm wall), lead time is approximately 15–20 working days. Custom specifications may require 25–30 days. -
Q: Can the tube be used for food-grade applications?
A: Yes, 316L stainless steel is FDA-compliant and suitable for food contact. A 2B finish or electropolished surface is recommended for hygiene-critical environments.
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