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Help CenterStainless Steel Spiral Punched Tube 0.5mm Thickness 8mm OD 0.2mm Hole Diameter
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As a leading manufacturer since 1998, Anping County Boli Hardware Wiremesh Products Factory specializes in the production of high-precision stainless steel spiral punched tubes. Our 0.5mm thickness, 8mm outer diameter, 0.2mm hole diameter spiral punched tube is engineered for demanding applications where consistent hole geometry, corrosion resistance, and mechanical strength are critical. With over two decades of expertise and annual exports reaching US$5-10 million, we deliver products that meet the rigorous standards of North America, Europe, and Southeast Asia.
This spiral punched tube is manufactured from high-grade stainless steel (typically 304 or 316L) using advanced progressive die punching technology. The spiral pattern ensures uniform hole distribution, high open area ratio, and excellent structural integrity. Each tube is carefully inspected for dimensional accuracy, burr-free edges, and surface finish suitability for your specific application.
Whether you need filter cores, sensor housings, fluid distribution components, or protective sleeves, our spiral punched tube offers a reliable solution. The 0.5mm wall thickness provides a balance between strength and flow efficiency, while the 0.2mm micro-holes allow precise filtration or fluid control.
Key Technical Specifications
| Parameter | Value | Remarks |
| Material | Stainless Steel 304 / 316L | Other grades available upon request |
| Wall Thickness | 0.5 mm (±0.05 mm) | Customizable |
| Outer Diameter | 8 mm (±0.1 mm) | Other diameters from 6mm to 50mm available |
| Hole Diameter | 0.2 mm (±0.02 mm) | Range: 0.1mm - 5mm |
| Open Area Ratio | Approx. 35% - 45% | Depends on hole pattern |
| Length | Up to 6000 mm per piece | Custom cut lengths available |
| Surface Finish | Mill finish / pickled & passivated | Optional: electropolished |
Product Features & Benefits
- Uniform Spiral Pattern: The continuous spiral punching process ensures consistent hole spacing and alignment, reducing flow resistance and improving filtration efficiency.
- Excellent Corrosion Resistance: Made from premium stainless steel, the tube withstands harsh chemical environments, high humidity, and temperature extremes.
- High Mechanical Strength: Despite the thin wall, the spiral structure provides enhanced rigidity, making it suitable for pressure applications and structural support.
- Burr-Free Edges: Precision tooling and deburring processes eliminate sharp edges, preventing damage to seals or media in contact applications.
- Customizable Dimensions: We can adjust outer diameter, wall thickness, hole size, pitch, and length to meet your exact specifications.
- Consistent Quality: Each production batch is inspected for dimensional tolerances, hole geometry, and surface finish, ensuring repeatable performance.
Common Applications
- Filtration Elements: Used as inner/outer support cores for filter cartridges in water, oil, and chemical filtration.
- Sensor Protection: Sleeves or housings for temperature, pressure, or flow sensors in industrial processes.
- Fluid Distribution: Spargers, aerators, and diffusers for gas/liquid mixing in bioreactors and wastewater treatment.
- Mechanical Components: Shaft sleeves, bearing spacers, and vibration dampers requiring precise flow or weight reduction.
- Shielding & Ventilation: EMI/RFI shielding tubes or ventilation ducts for electronic enclosures.
Why Choose Boli Hardware Wiremesh?
With over 25 years of manufacturing experience, Anping County Boli Hardware Wiremesh Products Factory has established a reputation for quality and reliability. Our annual export value of US$5-10 million across more than 10 international markets demonstrates our commitment to meeting global standards. We operate from our factory in Hengshui, Hebei, with convenient access to Tianjin, Qingdao, Shanghai, and Foshan ports for efficient worldwide shipping.
Our skilled team uses advanced CNC punching machines and strict quality control procedures to ensure every spiral punched tube meets your requirements. We offer competitive pricing without compromising on material quality or precision. Whether you need a small prototype batch or large-scale production, we can deliver.
Contact us today to discuss your custom spiral punched tube needs. We provide free samples for evaluation and technical support throughout your project. Let us help you optimize your design with our reliable, high-performance stainless steel tubes.
Frequently Asked Questions
Q: What stainless steel grades are available for this tube?
A: We primarily use SS304 and SS316L. Other grades like SS321 or duplex stainless steel can be supplied upon request. Please specify your application environment.
Q: Can the hole pattern be customized?
A: Yes, we can adjust hole diameter, pitch, and spiral angle to meet your requirements. The standard pattern is a 60° staggered arrangement, but other patterns are possible.
Q: What is the maximum length you can produce?
A: Our standard maximum length is 6 meters for continuous spiral tubes. Longer lengths can be achieved by welding multiple sections, but seamless tubes are limited to 6m.
Q: Do you provide surface treatment like polishing or passivation?
A: Yes, we offer pickling, passivation, and electropolishing services. The standard supply is mill finish. Please specify if you need a smoother surface.
Q: What is the minimum order quantity (MOQ)?
A: For standard specifications, the MOQ is 100 meters. For custom dimensions, the MOQ may be higher. We also accept small trial orders for sample evaluation.
Q: How do you ensure the hole diameter accuracy?
A: We use precision dies and regular in-process inspection with optical measuring equipment. Each batch is sample-checked for hole size and roundness.
Q: Can these tubes be used for food-grade applications?
A: Yes, SS304 or SS316L with proper surface finish can meet food contact requirements. Additional cleaning and passivation are recommended.
Q: What is the typical lead time?
A: For standard sizes, lead time is 15-20 working days. Custom orders typically require 20-30 working days depending on complexity and quantity.
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