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Help CenterStainless Steel Spiral Punched Tube, Mill Test Report Provided, 316L, 2mm Hole, 60-Day Return Policy
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As a leading manufacturer of wire mesh and perforated metal products since 1998, Anping County Boli Hardware Wiremesh Products Factory proudly presents our 316L Stainless Steel Spiral Punched Tube with precise 2mm holes. Each tube is accompanied by a Mill Test Report, ensuring material traceability and quality assurance. With an annual export value of US$5–10 million and a 60-day return policy, we offer both reliability and flexibility for your industrial applications.
Our spiral punched tube is produced by cold-rolling and punching high-grade 316L stainless steel, resulting in a spiral seam that enhances structural integrity while maintaining excellent flow characteristics. The 2mm uniform holes are arranged in customizable patterns to suit filtration, ventilation, or decorative needs. Below are key specifications and benefits:
Key Features & Specifications
- Material: 316L Stainless Steel – excellent corrosion resistance, especially in chloride environments, making it ideal for marine, chemical, and food processing industries.
- Hole Diameter: 2mm (±0.1mm tolerance) – precision-punched for consistent filtration or flow control.
- Spiral Design: Continuous spiral seam ensures high strength and flexibility, reducing the risk of cracking under pressure.
- Wall Thickness Options: Available from 0.5mm to 3mm (customizable upon request).
- Length: Standard lengths up to 6 meters, or cut to customer specifications.
- Surface Finish: Mill finish, pickled, or electropolished (optional).
- Supplied with Mill Test Report – confirms chemical composition and mechanical properties per ASTM A240.
- Application Versatility: Used in spiral filter elements, soundproofing panels, ventilation ducts, decorative screens, and more.
| Parameter | Value | Notes |
|---|---|---|
| Material Grade | 316L | Low carbon content for improved weldability |
| Hole Diameter | 2mm | Other sizes available on request |
| Open Area | 20%–40% (customizable) | Depends on pitch/pattern |
| Tube Outer Diameter | 20mm–200mm (customizable) | Spiral shape allows flexibility |
| Standard Length | 3m, 6m or custom | Cutting service available |
Compared to traditional welded or seamless tubes, our spiral punched tube offers a unique combination of lightweight construction and high mechanical strength. The continuous spiral seam distributes stress evenly, making it suitable for applications where vibration or thermal expansion occurs. The 2mm perforations provide excellent flow distribution without clogging, while the 316L material ensures long service life even in aggressive environments.
Customer Benefits:
- Reduced maintenance costs due to corrosion resistance.
- Customizable hole pattern and dimensions to match exact process requirements.
- Mill Test Report included for full material traceability – essential for quality audits.
- 60-day return policy gives you peace of mind when trying new products.
- Direct factory pricing with reliable supply chain from our base in Hengshui, Hebei, China.
As a manufacturer with over 25 years of experience, we ship our products through major ports including Tianjin, Qingdao, Shanghai, and Foshan. Our tubes are exported to North America, Europe, Southeast Asia, Africa, and many other regions. We have a dedicated quality control team that inspects every batch before shipment, and we offer flexible packaging options (wooden cases, pallets, or as per customer request).
Trust & Reliability: With annual export sales of US$5–10 million, we have built long-term partnerships with clients worldwide. Our commitment to quality is backed by the Mill Test Report and a 60-day return policy. If you are looking for a perforated spiral tube that combines durability, precision, and value, contact us today for a quote or sample. We are ready to support your project with technical advice and custom solutions.
Frequently Asked Questions
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Q: What is the difference between 316 and 316L stainless steel?
A: 316L has lower carbon content, which reduces the risk of carbide precipitation during welding, making it preferred for welded applications. Both offer excellent corrosion resistance, but 316L is more suitable for heavy welding. -
Q: Can I get a different hole size or pattern?
A: Yes, we can customize the hole diameter, pitch, and pattern (staggered, linear, etc.) according to your requirements. Please provide your specifications for a quotation. -
Q: Is the Mill Test Report included for every order?
A: Yes, we provide a Mill Test Report (MTR) for each batch, confirming the chemical composition and mechanical properties of the 316L material. This is standard for all our stainless steel products. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ is typically 100 meters for standard sizes, but we can discuss smaller quantities for sample orders. Contact us for details. -
Q: How does the 60-day return policy work?
A: If you are not satisfied with the product for any reason, you may return it within 60 days of receipt. The product must be unused and in original packaging. We will issue a refund or replacement as per our policy. -
Q: Can you provide custom lengths and wall thicknesses?
A: Absolutely. We can cut tubes to exact lengths (e.g., 1.5m, 2.4m) and offer wall thickness from 0.5mm to 3mm. Custom dimensions are our specialty. -
Q: What packaging do you use for export?
A: We use sturdy wooden cases or pallets with plastic wrapping to protect the tubes during transit. For fragile or large orders, we can reinforce packaging as needed. -
Q: How long does shipping take?
A: For standard orders, production takes 15–20 days, and shipping time depends on the destination. We ship via sea or air, and we can arrange door-to-door delivery if required.
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