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Help CenterHelically Perforated Tube 304 Stainless Steel 2mm Perforation 5mm Pitch Industrial Grade
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Anping County Boli Hardware Wiremesh Products Factory (established in 1998) is a professional manufacturer specializing in precision perforated metal products. Our Helically Perforated Tube 304 Stainless Steel 2mm Perforation 5mm Pitch Industrial Grade is designed to meet the most demanding filtration, separation, and structural applications. The unique helical perforation pattern ensures uniform flow distribution, excellent mechanical strength, and easy cleaning — making it an ideal choice for industries requiring reliable and durable tubular components.
This product is manufactured from high-quality 304 stainless steel, offering outstanding corrosion resistance, heat resistance, and long service life. The 2mm perforation diameter combined with a 5mm pitch creates a precise open area ratio suitable for fine particle screening, fluid dispersion, and noise attenuation. The helical arrangement of holes provides consistent performance along the entire length of the tube, minimizing clogging and enhancing efficiency.
Key Features & Technical Specifications
- Material: 304 Stainless Steel (AISI 304, 1.4301) — excellent corrosion resistance for most environments.
- Perforation Diameter: 2 mm (±0.1 mm) — precisely punched for consistent filtering.
- Pitch (Center-to-Center Distance): 5 mm — ensures uniform open area and structural integrity.
- Pattern: Helical (spiral) — holes are arranged in a continuous spiral around the tube, improving flow dynamics and reducing pressure drop.
- Wall Thickness: Available in 1.0 mm, 1.5 mm, 2.0 mm (customizable upon request).
- Length: Standard lengths from 1000 mm to 6000 mm; custom lengths available.
- Diameter: Customizable from 20 mm to 200 mm outer diameter.
- Surface Finish: Mill finish, pickled, or polished (optional).
- Grade: Industrial Grade — suitable for heavy-duty applications.
| Parameter | Specification |
| Material | 304 Stainless Steel |
| Perforation Diameter | 2 mm |
| Pitch | 5 mm |
| Pattern | Helical (Spiral) |
| Wall Thickness | 1.0 – 2.0 mm (customizable) |
| Length | 1000 – 6000 mm (customizable) |
| Outer Diameter | 20 – 200 mm (customizable) |
| Open Area Ratio | Approximately 12% (depending on pitch and wall thickness) |
Advantages & Benefits
- Enhanced Filtration Efficiency: The helical pattern reduces clogging and allows for effective separation of particles down to 2 mm size.
- Uniform Flow Distribution: Spiral holes ensure consistent fluid or gas flow along the tube length, improving system performance.
- High Structural Strength: 304 stainless steel provides durability and resistance to deformation under pressure or mechanical stress.
- Corrosion & Heat Resistance: Suitable for use in harsh environments, including chemical processing, food industry, and outdoor applications.
- Easy Maintenance: Smooth surface and helical design make cleaning straightforward; less prone to blockage compared to straight-hole patterns.
- Customizable Dimensions: Wall thickness, tube diameter, length, and even perforation pattern can be tailored to your specific requirements.
- Versatile Applications: Ideal for water treatment, oil & gas filtration, sound absorption panels, grain drying, and architectural elements.
Typical Applications
- Filtration & Separation: Used in pressure filters, centrifugal separators, and strainer baskets for removing solids from liquids or gases.
- Acoustic Control: Installed in silencers, mufflers, and noise barriers where sound absorption is required.
- Chemical Processing: Reactor internals, catalyst support, and distributor tubes for reactive fluids.
- Food & Beverage: Screening, conveying, and drying of grains, nuts, and other food products.
- Automotive & Aerospace: Exhaust system components, heat shields, and fluid distribution pipes.
- Architectural & Decorative: Handrails, ventilation grilles, and decorative cladding with functional perforation.
Why Choose Anping Boli?
With over 20 years of manufacturing experience in the wire mesh and perforated metal industry, Anping County Boli Hardware Wiremesh Products Factory has established a reputation for quality and reliability. Our annual export value of US$5 Million – US$10 Million reflects strong global demand for our products. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring efficient logistics to customers across North America, South America, Europe, Asia, Africa, and Oceania.
Every Helically Perforated Tube undergoes strict quality control to ensure precise dimensions, burr-free edges, and consistent perforation. We offer flexible customization options to match your project specifications, and our experienced team provides responsive technical support.
Contact us today to discuss your requirements or request a sample. Let us provide you with a durable, high-performance perforated tube solution that adds value to your application.
Frequently Asked Questions (FAQ)
Q1: What material is this tube made of?
A1: It is made of 304 stainless steel (AISI 304), which offers excellent corrosion resistance, good formability, and high toughness. It is suitable for most industrial, food, and chemical environments.
Q2: Can I customize the tube length, diameter, or wall thickness?
A2: Yes, we offer full customization. Standard outer diameter ranges from 20 mm to 200 mm, wall thickness from 1.0 mm to 2.0 mm, and length up to 6000 mm. Please provide your specific dimensions for quotation.
Q3: What is the accuracy of the perforation diameter and pitch?
A3: The perforation diameter is controlled within ±0.1 mm, and the pitch tolerance is ±0.2 mm. Our CNC punching machines ensure high consistency across the entire tube.
Q4: Is this tube suitable for high-temperature applications?
A4: 304 stainless steel can withstand continuous service temperatures up to 870°C (1600°F) in oxidizing atmospheres. For higher temperatures or specific requirements, please consult our technical team.
Q5: How is the tube packaged for export?
A5: Tubes are packed in bundles with plastic caps on both ends, wrapped in waterproof paper, and secured with steel strapping. For long lengths, wooden crates are used to prevent damage during transit.
Q6: What is the minimum order quantity (MOQ)?
A6: Our MOQ for standard sizes is 100 pieces. For custom dimensions, MOQ may vary. We welcome small trial orders for sample testing.
Q7: Can the tube be cut to exact lengths on-site?
A7: Yes, the tube can be cut with standard cutting tools (hacksaw, band saw, or abrasive cutter). We recommend deburring the cut edges to maintain safety and performance.
Q8: Do you provide samples before bulk order?
A8: Yes, we offer samples (usually 1-2 pieces) for customer evaluation. The sample cost is charged, but it is refundable upon bulk order placement. Please contact us for details.
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