Cold Drawn Straight Seam Welded Perforated Tube, 304 SS, 1.2mm Wall, 5mm Hole, ISO 9001 Standard
Product Spotlights
Anping County Boli Hardware Wiremesh Products Factory, established in 1998 with an annual export value of US$5-10 million, presents our premium Cold Drawn Straight Seam Welded Perforated Tube made from 304 stainless steel. With a wall thickness of 1.2mm and precisely punched 5mm holes, this product is manufactured in strict compliance with ISO 9001 standards, ensuring consistent quality and dimensional accuracy. Our perforated tubes are trusted by clients across North America, South America, Europe, and Asia for applications requiring durability, corrosion resistance, and precise flow control.
This product combines the strength of cold-drawn seamless-like construction with the cost-efficiency of welded tubing. The straight seam is fully welded and then cold drawn to improve surface finish, mechanical properties, and dimensional tolerances. The round perforations are evenly distributed, offering excellent uniformity for filtration, ventilation, or decorative purposes. Each tube undergoes rigorous inspection to meet our factory's quality control system certified under ISO 9001.
Key Features & Technical Specifications
- Material: 304 Stainless Steel (1.4301) – excellent corrosion resistance, weldability, and formability.
- Wall Thickness: 1.2mm – balances strength and weight, suitable for moderate pressure applications.
- Hole Diameter: 5mm – standard round openings, pass-through for small particles or airflow.
- Production Process: Cold drawn after welding – enhances surface smoothness, concentricity, and tensile strength.
- Weld Type: Straight seam welded – continuous and defect-free, inspected by eddy current or hydrostatic test.
- Open Area: Typically 30-40% depending on pitch pattern (customizable).
- Length: Available in 6m standard, or custom lengths up to 12m upon request.
- End Finishing: Plain ends, threaded, or grooved (optional).
| Parameter | Value |
|---|---|
| Outer Diameter (OD) Range | 6mm – 100mm (custom available) |
| Hole Pitch (Center to Center) | 6mm, 8mm, 10mm (standard) or custom |
| Hole Pattern | Staggered (60° triangle) or straight line |
| Tensile Strength | ≥515 MPa (cold drawn condition) |
| Surface Finish | Mill finish (2B), optional bright annealed or polished |
| Packaging | Plastic caps, bubble wrap, wooden crates for export |
Advantages & Customer Benefits
- Enhanced Durability: Cold drawing process refines grain structure, increasing fatigue resistance and prolonging service life.
- Precision Uniformity: CNC punching ensures hole diameter tolerance within ±0.1mm, ideal for consistent filtration performance.
- Corrosion Resistance: 304 SS withstands moisture, chemicals, and food processing environments – perfect for sanitary applications.
- Cost-Effective: Welded construction with cold drawn finish offers seamless-like quality at lower production cost.
- Versatile Use: Suitable for speaker grilles, ventilation ducts, liquid filtration, oil strainers, architectural screens, and more.
- Customizable: We can adjust OD, wall thickness, hole pattern, length, and end connections to fit your specific requirements.
Product Applications
- Filtration systems (water, oil, gas)
- Ventilation and air conditioning ducts
- Food processing equipment (sieves, baskets)
- Architectural handrails and decorative panels
- Automotive mufflers and exhaust components
- Agricultural irrigation and spraying machinery
Backed by over 25 years of manufacturing experience, Anping County Boli Hardware Wiremesh Products Factory has exported to more than 10 global markets, including North America, Europe, and Southeast Asia. Our factory is located in Hengshui, Hebei, China, and we ship from Tianjin, Qingdao, Shanghai, and Foshan ports. With an annual export value of US$5-10 million, we have the capacity to fulfill large-volume orders while maintaining strict quality control under ISO 9001. Each tube is traceable, and we offer free samples for quality evaluation before mass production. Contact us today to discuss your perforated tube requirements – we are ready to provide competitive pricing and reliable delivery.
Frequently Asked Questions
Q1: What is the difference between cold drawn and hot rolled perforated tubes?
Cold drawn tubes have tighter dimensional tolerances, smoother surface finish, and higher mechanical strength compared to hot rolled. Our cold drawn process ensures uniform wall thickness and better hole alignment.
Q2: Can you provide tubes with different hole patterns or sizes?
Yes, we offer customizable hole diameters, pitch, and patterns (staggered or straight). Please specify your requirements when inquiring – we can adjust tooling accordingly.
Q3: What is the minimum order quantity (MOQ) for this product?
Our standard MOQ is 500 pieces for common sizes. For custom dimensions, MOQ may vary. We also accept trial orders for small quantities to test quality.
Q4: How do you ensure the holes are clean and free of burrs?
We use high-speed CNC punching machines with carbide dies, and all tubes are deburred after perforation. Optional tumbling or electropolishing is available for ultra-smooth edges.
Q5: What is the tolerance on hole diameter and wall thickness?
Hole diameter tolerance is ±0.1mm; wall thickness tolerance is ±0.05mm for 1.2mm wall. Outer diameter tolerance is ±0.2mm for standard sizes.
Q6: Can you provide certificates of material and inspection?
Yes, we can issue mill test certificates for 304 stainless steel material, along with our ISO 9001 quality certificate and inspection reports for each batch.
Q7: How long is the lead time for production?
Typical lead time is 15-25 working days after order confirmation, depending on quantity and customization. For urgent orders, we can expedite with partial shipments.
Q8: What is your shipping and payment terms?
We ship FOB from Tianjin, Qingdao, Shanghai, or Foshan. Common payment terms are T/T (30% deposit, 70% before shipment) or L/C at sight. We also accept PayPal for small orders.
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