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Help CenterERW Straight Seam Welded Perforated Pipe 4 Inch Schedule 40 3mm Hole Dia With Mill Test Report
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Anping County Boli Hardware Wiremesh Products Factory, established in 1998 with over 20 years of manufacturing expertise, proudly presents the ERW Straight Seam Welded Perforated Pipe 4 inch Schedule 40 3mm Hole Dia. As a leading manufacturer with an annual export value of US$5-10 million, we supply high-quality perforated pipes to clients across North America, South America, Europe, and Asia. This product combines the strength of ERW welded steel pipe with precision perforation, offering a reliable solution for fluid filtration, drainage, and structural applications. Each pipe comes with a Mill Test Report to ensure material traceability and performance compliance.
Our 4-inch Schedule 40 perforated pipe is designed for demanding environments where consistent hole size and structural integrity are critical. The 3mm diameter holes are precisely punched using advanced CNC equipment, ensuring uniform spacing and clean edges. Available in black or galvanized finish, this pipe can be customized to meet specific project requirements. Whether you need it for oil and gas well screens, water well casing, or industrial filtration systems, our product delivers long-lasting performance.
Key Features & Technical Specifications
- ERW Welded Construction: Electric Resistance Welded seam ensures high strength, uniform wall thickness, and excellent pressure capacity.
- Precision Perforation: 3mm diameter holes drilled with ±0.1mm tolerance, available in staggered or straight row patterns.
- Schedule 40 Wall Thickness: Approximately 6.02mm (0.237 inch) provides superior durability for heavy-duty applications.
- Material Compliance: Made from carbon steel conforming to ASTM A53 Grade B or equivalent, with full Mill Test Report provided.
- Customizable Options: Length can be cut to your specifications (e.g., 6m, 12m, or custom). Surface treatment options include black, hot-dip galvanized, or powder coating (upon request).
- Versatile Applications: Ideal for water well screens, drainage systems, chemical filtration, ventilation ducts, and architectural projects.
| Parameter | Specification |
| Nominal Size | 4 inch (DN100) |
| Schedule | 40 |
| Outside Diameter | 114.3 mm (4.5 inch) |
| Wall Thickness | 6.02 mm (0.237 inch) |
| Hole Diameter | 3 mm |
| Hole Spacing (Center to Center) | 5 mm (standard) – customizable |
| Open Area | Approximately 22% (depending on pattern) |
| Length | 6m standard (custom lengths available) |
| End Finish | Plain end, beveled, or threaded (optional) |
Advantages & Customer Benefits
- Enhanced Flow Efficiency: The 3mm holes are optimized for liquid and gas filtration, reducing clogging while maintaining structural strength.
- Cost-Effective Solution: ERW manufacturing lowers production costs without compromising quality, giving you a competitive price advantage.
- Full Traceability: Each pipe batch is accompanied by a Mill Test Report (MTR) documenting chemical composition and mechanical properties.
- Corrosion Resistance: Galvanized finish option provides excellent protection against rust, extending service life in outdoor or underground environments.
- Easy Installation: Standard Schedule 40 dimensions allow seamless integration with existing piping systems and fittings.
- Customization Flexibility: We can adjust hole diameter, spacing, pattern, and length to meet your unique project specifications.
With our factory located in Hengshui, Hebei, China, we have a strong supply chain and efficient logistics network. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery to global markets. Our annual export value of over US$5 million reflects the trust customers place in our products. We have served clients in North America, South America, Europe, Africa, and the Middle East, consistently delivering high-quality perforated pipes that meet international standards.
Why choose Boli? Since 1998, we have been dedicated to wire mesh and perforated metal products. Our experienced team, advanced CNC punching machines, and strict quality control ensure that every pipe meets your expectations. The Mill Test Report guarantees material integrity, and our responsive customer service provides technical support and after-sales assistance. Contact us today for a quote or to discuss your custom requirements. We are confident that our ERW perforated pipe will exceed your expectations.
Frequently Asked Questions
-
What material is used for this pipe?
It is made from carbon steel, typically ASTM A53 Grade B equivalent. The exact chemical composition is provided in the Mill Test Report. -
Can I customize the hole pattern or spacing?
Yes, we offer customization for hole diameter, spacing, pattern (staggered or straight), and open area percentage. Please provide your requirements. -
What is the standard length?
Standard length is 6 meters (20 feet), but we can cut to your specified length (e.g., 3m, 12m, or custom). -
Do you provide a sample before bulk order?
Yes, sample orders are welcome. We can produce a small piece for your evaluation, with shipping cost covered by the buyer. -
What is a Mill Test Report (MTR)?
An MTR is a quality document issued by the mill that certifies the chemical and mechanical properties of the steel, ensuring traceability and compliance with standards. -
Can this pipe be used for well screens?
Yes, it is commonly used for water well screens, oil well screens, and dewatering due to the precise holes and strong structure. -
What surface treatments are available?
The pipe can be supplied in black (plain), hot-dip galvanized, or powder coated. Galvanized finish is recommended for outdoor or corrosive environments. -
What is the lead time for bulk orders?
Typically 15-30 days depending on quantity and customization. We ship from Tianjin, Qingdao, or Shanghai ports.
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