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Help Center304 Stainless Steel Spiral Punched Tube, 1.2mm Wall, 6mm Hole, 2000mm Length, Mill Test Report
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a professional manufacturer specializing in metal perforated and mesh products. Our 304 Stainless Steel Spiral Punched Tube, 1.2mm Wall, 6mm Hole, 2000mm Length is precision-engineered for demanding industrial applications. With an annual export value of US$5-10 million and serving markets across North America, South America, Europe, Asia, Africa, and Oceania, we bring decades of expertise to every product. This spiral punched tube combines robust stainless steel construction with a unique spiral pattern, ensuring uniform hole distribution, high strength, and excellent flow characteristics. Whether you need it for filtration, shielding, or material handling, this tube delivers consistent performance and reliability.
Our spiral punched tube is manufactured from high-quality 304 stainless steel, offering excellent corrosion resistance, durability, and hygiene. The 1.2mm wall thickness provides a sturdy structure while maintaining flexibility for custom bending or cutting. The 6mm diameter holes are arranged in a continuous spiral pattern, which enhances structural integrity and allows for uniform fluid or air passage. Each tube is cut to a standard length of 2000mm, with options for custom lengths available upon request. A Mill Test Report (MTR) is included with every shipment, certifying material composition and mechanical properties, giving you full traceability and peace of mind.
Key Features & Technical Specifications
- Material Grade: 304 Stainless Steel (AISI 304, 0Cr18Ni9) – excellent corrosion resistance and weldability.
- Wall Thickness: 1.2mm ±0.05mm – balanced strength and weight.
- Hole Diameter: 6mm ±0.1mm – consistent open area for optimal flow.
- Hole Pattern: Continuous spiral punched design – increases tube rigidity without blocking flow.
- Standard Length: 2000mm (custom lengths available: 500mm, 1000mm, 3000mm, etc.)
- Surface Finish: Mill finish, with optional pickling, passivation, or polishing.
- Packaging: Bundled with protective end caps, wrapped in waterproof paper, and packed in plywood cases for export.
- Quality Assurance: Each batch undergoes dimensional inspection, hole alignment check, and material verification via Mill Test Report.
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel |
| Wall Thickness | 1.2mm |
| Hole Diameter | 6mm |
| Length | 2000mm |
| Open Area Ratio | Approx. 35% (depending on pitch) |
| Tensile Strength | ≥520 MPa (per AISI 304) |
| Operating Temperature | -20°C to 800°C (for intermittent use) |
Customer Benefits
- Enhanced Flow Efficiency: The spiral hole pattern minimizes turbulence and pressure drop, ideal for fluid filtration or gas diffusion.
- Superior Structural Strength: The spiral design distributes stress evenly, allowing the tube to withstand higher loads than straight perforated tubes.
- Versatile Applications: Suitable for use in centrifugal separators, conveyor screws, protective sleeves, ventilation ducts, and agricultural machinery.
- Easy Fabrication: Can be cut, welded, bent, or threaded easily without compromising hole integrity.
- Long Service Life: 304 stainless steel resists rust, chemicals, and high temperatures, reducing replacement frequency and maintenance costs.
- Compliance with Standards: Each tube is produced with strict dimensional tolerances and includes a Mill Test Report for material verification.
Our factory, located in Hengshui, Hebei, China, operates with over 20 years of experience in metal fabrication. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring fast and reliable delivery to global customers. With an annual export value of US$5 million – US$10 million and a customer base spanning North America, South America, Europe, Asia, Africa, and Oceania, we have proven our ability to meet international quality standards. Our team conducts rigorous quality checks at every production stage, from raw material inspection to final packaging. The included Mill Test Report provides full traceability, confirming that the material meets the required chemical composition and mechanical properties. We are committed to providing competitive pricing without compromising quality. Contact us today for a quote or to discuss your custom requirements – we are here to support your project from prototype to mass production.
Frequently Asked Questions (FAQ)
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Q: What is the difference between spiral punched tube and straight perforated tube?
A: A spiral punched tube has holes arranged in a continuous spiral pattern along the tube length, which provides better structural integrity and more uniform distribution of holes compared to straight rows. This design also reduces stress concentration and improves flow characteristics. -
Q: Can I get custom lengths shorter or longer than 2000mm?
A: Yes, we offer custom lengths from 500mm up to 3000mm or more, depending on your requirements. Please specify your desired length when placing an order. -
Q: Is the Mill Test Report included for every order?
A: Yes, a Mill Test Report (MTR) is provided with each shipment to verify the material grade, chemical composition, and mechanical properties of the 304 stainless steel. -
Q: Can this tube be used for food processing or pharmaceutical applications?
A: 304 stainless steel is food-grade and safe for contact with food. However, for specific hygiene standards, we recommend confirming with your local regulations. The mill finish may require additional pickling or polishing for high-cleanliness environments. -
Q: What is the typical open area of this tube?
A: The open area ratio depends on the hole pitch (center-to-center distance). For a standard 6mm hole with a pitch of 10mm (spiral), the open area is approximately 35%. We can adjust the pitch to achieve different open area percentages. -
Q: Do you offer surface treatment like passivation or electropolishing?
A: Yes, we offer optional surface treatments including passivation, pickling, and polishing. Please indicate your preference during quotation. -
Q: How do you pack the tubes for export to prevent damage?
A: Tubes are bundled with plastic end caps, wrapped in waterproof paper, and packed in sturdy plywood cases or pallets. Each bundle is labeled with product details. -
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ for standard 2000mm tubes is 100 pieces. For custom sizes, MOQ may vary. Contact our sales team for details.
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