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Help CenterStainless Steel Helically Perforated Tube, 220V Electric Resistance Welded, 4mm Hole, 1.2m Length
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As a trusted manufacturer since 1998, Anping County Boli Hardware Wiremesh Products Factory proudly presents our Stainless Steel Helically Perforated Tube – a high-precision solution designed for demanding industrial applications. Engineered with 220V electric resistance welding technology and featuring a precise 4mm hole diameter over a 1.2m length, this tube offers exceptional durability, uniform perforation, and superior flow characteristics. Whether you need a robust filter element, a protective sleeve, or a ventilation component, our perforated tube delivers consistent performance and long service life.
Our helically perforated pattern ensures optimal strength and even distribution of openings, reducing stress concentration and extending the tube's lifespan. The stainless steel construction provides excellent corrosion resistance, making it suitable for both wet and dry environments. With our extensive experience in wire mesh and perforated metal products, we guarantee tight tolerances and a smooth weld seam that meets your exact specifications.
Below we outline the key features, technical specifications, and benefits of this product.
Key Features and Benefits
- Uniform Helical Perforation: The helical pattern provides consistent hole spacing and reduces flow turbulence, ideal for filtration and separation processes.
- 220V Electric Resistance Welding: Ensures a strong, clean weld seam without filler material, maintaining the tube's integrity and corrosion resistance.
- 4mm Hole Diameter: Balances open area with structural strength, suitable for medium to coarse filtration, particle separation, and aeration.
- 1.2m Standard Length: Convenient size for many applications; custom lengths are available upon request.
- Stainless Steel Material: Offers excellent resistance to rust, chemicals, and high temperatures, ensuring long-term reliability.
- Customizable Options: End caps, different stainless steel grades (304 or 316L), and additional surface treatments can be provided to meet your specific needs.
- Easy to Clean: Smooth surface and consistent holes allow for simple backwashing or chemical cleaning, reducing maintenance downtime.
- Cost-Effective Production: Our manufacturing process minimizes waste and offers competitive pricing for both small and large quantities.
Technical Specifications
| Parameter | Value |
| Material | Stainless Steel (304 / 316L optional) |
| Hole Diameter | 4 mm (±0.1 mm) |
| Tube Length | 1.2 m (other lengths customizable) |
| Welding Method | Electric Resistance Welded (ERW) – 220V |
| Perforation Pattern | Helical (continuous spiral) |
| Open Area | Approx. 30-40% (depending on pitch) |
| Wall Thickness | 0.8 mm – 2.0 mm (configurable) |
| Surface Finish | Mill finish / pickled / passivated (optional) |
| End Cap | Available upon request (welded or threaded) |
| Packaging | Bundled with protective wrapping or wooden cases |
Typical Applications
- Filtration & Separation: Used in water treatment, chemical processing, oil and gas, and food & beverage industries for removing particles or as a pre-filter.
- Aeration & Diffusion: Ideal for air spargers, diffusers, and fluidized bed systems due to the even hole distribution.
- Protective Sleeves: Covers for temperature sensors, thermocouples, or probes in harsh environments.
- Ventilation & Sound Attenuation: Components in HVAC systems, exhaust pipes, or acoustic panels.
- Architectural & Decorative: Railings, dividers, or light diffusers where a modern industrial look is desired.
- Agricultural & Industrial Screens: Grain cleaning, seed sorting, or material handling.
Our helically perforated tube is manufactured with precision CNC-guided perforation and ERW welding, ensuring consistent quality from batch to batch. The 220V electrical system allows for efficient production and reliable weld integrity. Each tube is inspected for hole diameter, straightness, and weld quality before packing.
For customers requiring specific dimensions, we offer flexible customization. Whether you need a different length, a larger or smaller hole size, or a specific stainless steel grade, our experienced team can accommodate your requirements. We also provide additional services such as cutting, deburring, and end cap installation.
Why Choose Anping County Boli Hardware Wiremesh Products Factory?
With over 25 years of industry experience (est. 1998), we have grown into a reliable manufacturer with annual export values between US$5 million and US$10 million. Our products are shipped to major ports including Tianjin, Qingdao, Shanghai, and Foshan, serving markets across North America, South America, Europe, Asia, Africa, and Oceania. We understand the importance of timely delivery and consistent quality.
Our factory is equipped with advanced perforating and welding machinery, and our quality control team follows strict procedures to ensure every tube meets your expectations. We have built long-term partnerships with clients in the filtration, petrochemical, and environmental protection sectors. Our commitment to innovation and customer satisfaction makes us a preferred partner for perforated tube solutions.
We invite you to contact us for a quote or to discuss your specific application. Our technical team is ready to assist you with product selection, customization, and after-sales support. Choose Boli Hardware for durable, high-performance stainless steel helically perforated tubes that deliver value for your projects.
Frequently Asked Questions (FAQ)
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Q: What is the difference between helical perforation and straight-row perforation?
A: Helical perforation arranges holes in a spiral pattern along the tube, which distributes stress more evenly and reduces the risk of cracking under pressure. It also provides a more uniform open area for fluid or gas flow compared to straight rows. -
Q: Can you supply tubes with a hole diameter other than 4mm?
A: Yes, we can customize the hole diameter based on your requirements. Options range from 1mm to 10mm or more, depending on the tube diameter and wall thickness. Please contact us with your specifications. -
Q: Is the tube suitable for high-temperature applications?
A: Stainless steel 304 can withstand temperatures up to 870°C in continuous service, while 316L offers better resistance to chlorides and higher temperatures. For extreme conditions, we recommend 316L or other heat-resistant alloys. -
Q: Do you offer end caps or threading for the tube?
A: Yes, we can provide welded end caps, threaded ends, or flanges upon request. These are customized to fit your installation requirements. -
Q: What is the minimum order quantity (MOQ) for this product?
A: Our standard MOQ is 100 pieces, but we can accommodate smaller trial orders for new customers. Larger quantities benefit from volume discounts. -
Q: How is the tube packaged for export?
A: Each tube is individually wrapped with protective foam or plastic, then bundled in wooden crates or pallets to prevent damage during shipping. We also offer custom packaging as per your instructions. -
Q: Can you provide a sample before bulk order?
A: Yes, we offer samples for evaluation. The sample cost and shipping fee are typically charged, but we will refund the sample cost for bulk orders exceeding a certain quantity. Please inquire for details. -
Q: What is the typical lead time?
A: For standard sizes (1.2m, 4mm hole), lead time is approximately 15-20 working days after order confirmation. Custom orders may take 25-30 days depending on complexity.
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