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Help Center304 Stainless Steel Helically Perforated Tube for Muffler Silencer, 2mm Holes, 300mm OD, 1.5mm Wall
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Welcome to Anping County Boli Hardware Wiremesh Products Factory, a trusted manufacturer with over 25 years of industry experience since 1998. Our 304 Stainless Steel Helically Perforated Tube with 2mm holes, 300mm outer diameter, and 1.5mm wall thickness is engineered for superior performance in muffler and silencer applications. This product combines the corrosion resistance of grade 304 stainless steel with a helical perforation pattern that optimizes sound attenuation and gas flow, making it an ideal choice for automotive exhaust systems, industrial silencers, and acoustic enclosures. With annual export values reaching US$5–10 million and shipments to global markets including North America, Europe, and Asia, we ensure consistent quality and reliable supply.
Product Features & Technical Advantages
- Material Excellence: Made from premium 304 stainless steel, offering excellent resistance to corrosion, heat, and oxidation, ensuring long service life even in harsh exhaust environments.
- Helical Perforation Design: The spiral hole pattern (2mm diameter) provides uniform gas distribution, reduces back pressure, and enhances sound absorption efficiency compared to straight-line perforations.
- Precision Dimensions: Outer diameter of 300mm and wall thickness of 1.5mm deliver structural integrity while maintaining lightweight characteristics for easy installation.
- Customizable Length: Available in standard lengths or custom cut to your specifications (please inquire for details).
- Versatile Applications: Suitable for mufflers, silencers, exhaust systems, catalytic converters, and industrial noise reduction equipment.
- Consistent Hole Quality: Each hole is precisely punched without burrs, ensuring smooth internal surface and consistent acoustic performance.
Technical Specifications
| Parameter | Value |
| Material Grade | 304 Stainless Steel (1.4301) |
| Outer Diameter (OD) | 300 mm (±1 mm) |
| Wall Thickness | 1.5 mm (±0.1 mm) |
| Hole Diameter | 2 mm |
| Hole Pattern | Helical (Spiral) – 15° pitch angle |
| Standard Length | 1000 mm / 2000 mm (customizable) |
| Surface Finish | Annealed, pickled, or mill finish |
| Packaging | Wooden pallets, plastic caps, or as required |
Benefits for Your Application
- Reduced Noise Levels: The helical perforation design effectively diffuses exhaust gases, lowering decibel levels without compromising engine performance.
- Enhanced Durability: 304 stainless steel withstands high temperatures (up to 800°C) and resists rust, providing a lifespan 3–5 times longer than carbon steel tubes.
- Improved Flow Efficiency: The 2mm holes allow optimal gas passage while minimizing back pressure, improving fuel economy and power output.
- Easy Integration: Standard 300mm OD fits many commercial muffler housings, and custom lengths are available for unique designs.
- Cost-Effective Solution: Our factory-direct pricing and efficient production reduce your procurement costs while maintaining high quality.
Why Choose Anping Boli?
With over two decades of manufacturing expertise, Anping County Boli Hardware Wiremesh Products Factory has built a reputation for excellence in metal fabrication. Our annual export value of US$5–10 million reflects global trust from clients in North America, Europe, Southeast Asia, and beyond. We ship from major Chinese ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring fast and reliable logistics. Every tube undergoes strict quality inspection to verify dimensional accuracy, hole consistency, and surface finish. We are committed to providing customizable solutions tailored to your specific requirements. Contact us today to request a quote or discuss your project needs—we look forward to partnering with you for superior performance and value.
Frequently Asked Questions (FAQ)
Q1: What is the maximum temperature this tube can withstand?
A: 304 stainless steel can handle continuous service temperatures up to 800°C (1472°F) and intermittent exposure up to 870°C (1598°F), making it suitable for most exhaust systems.
Q2: Can I get a sample before placing a bulk order?
A: Yes, we offer samples for evaluation. Please contact our sales team with your requirements. Sample cost and shipping will be arranged accordingly.
Q3: Is the helical perforation pattern available in other hole sizes?
A: Yes, we can customize hole diameters (e.g., 1.5mm, 3mm, 4mm) and pitch angles according to your acoustic or flow specifications. Minimum order quantities may apply.
Q4: What is the typical lead time for this product?
A: For standard sizes and lengths, lead time is approximately 15–20 working days after order confirmation. Custom orders may require 25–30 days depending on complexity.
Q5: Do you provide any certifications for material quality?
A: We can provide material test reports (MTR) from our steel supplier upon request. Please note that specific certifications should be confirmed during the inquiry.
Q6: How is the tube surface treated to prevent corrosion during storage?
A: Our standard finish is annealed and pickled, which removes oxidation and leaves a clean surface. For additional protection, we can apply oil coating or wrapping upon request.
Q7: Can I order tubes with a different outer diameter, e.g., 250mm or 350mm?
A: Yes, we offer custom diameters. Please provide your exact specifications, and our engineering team will advise on feasibility and pricing.
Q8: What is the packaging method for export?
A: Tubes are packed in bundles with protective caps, wrapped in waterproof paper, and secured on wooden pallets or steel crates to prevent damage during transit.
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