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Help CenterHot Dipped Galvanized Steel Pipe 6 Inch DN150 ASTM A53 Q235B Schedule 40 Threaded End 6m
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Hemaokang Steel (Shandong) Co., Ltd. is proud to present our Hot Dipped Galvanized Steel Pipe 6 Inch DN150 ASTM A53 Q235B Schedule 40 Threaded End 6m. As a manufacturer with ISO9001 certification and an annual export value between US$50 million and US$100 million, we ensure every pipe meets rigorous quality standards. Our threaded end pipes are designed for easy installation in plumbing, structural, and industrial applications, offering superior corrosion resistance and long service life.
This product combines the strength of Q235B steel with the protection of hot-dipped galvanizing, making it ideal for harsh environments. The 6-inch (DN150) diameter and Schedule 40 wall thickness provide excellent pressure handling capacity, while the threaded ends allow quick connection without welding. Whether you need pipes for water supply, gas lines, or structural supports, our galvanized steel pipe delivers reliability and performance.
Key Features & Benefits
- Superior Corrosion Resistance: Hot-dipped galvanized coating provides long-lasting protection against rust and corrosion, extending pipe life even in outdoor or moisture-prone environments.
- High Strength & Durability: Made from Q235B steel conforming to ASTM A53, this pipe offers excellent tensile strength and impact resistance, suitable for high-pressure applications.
- Threaded Ends for Easy Installation: Pre-threaded ends (NPT standard) enable quick, secure connections with fittings, reducing labor time and eliminating the need for on-site threading.
- Standard Dimensions: 6-inch (DN150) nominal diameter, Schedule 40 wall thickness (7.11mm), and 6-meter length ensure compatibility with most piping systems.
- Versatile Applications: Ideal for water supply, gas distribution, oil pipelines, structural framing, scaffolding, and agricultural irrigation systems.
- ISO9001 Quality Assurance: Manufactured under strict quality control processes, guaranteeing consistent product quality and traceability.
- Cost-Effective Solution: Compared to stainless steel, galvanized pipes offer a more economical option with similar corrosion protection for many applications.
Technical Specifications
| Parameter | Value |
| Nominal Diameter | 6 Inch (DN150) |
| Standard | ASTM A53 / Q235B |
| Wall Thickness | Schedule 40 (7.11 mm) |
| Length | 6 Meters (20 ft) |
| End Type | Threaded (NPT Standard) |
| Surface Treatment | Hot Dipped Galvanized (HDG) |
| Zinc Coating Weight | ≥ 500 g/m² (customizable) |
| Tensile Strength | ≥ 415 MPa (ASTM A53 Grade B) |
| Yield Strength | ≥ 240 MPa |
| Certification | ISO9001:2015 |
Detailed Product Advantages
Hot-Dipped Galvanizing Process: Our pipes undergo a thorough hot-dip galvanizing process where the steel is immersed in molten zinc. This creates a metallurgical bond that provides a tough, uniform coating. The zinc layer acts as a sacrificial anode, protecting the steel even when scratched or damaged. The result is a pipe that can withstand harsh weather, humid environments, and chemical exposure without significant degradation.
Threaded End Precision: Each pipe end is precisely threaded using high-quality dies to ensure consistent thread depth and pitch. The threads are clean and sharp, allowing for leak-free connections with standard fittings. Tapered NPT threads are used, which are widely accepted in North America and other markets. This eliminates the need for on-site threading, reduces installation time, and minimizes the risk of thread damage during transport.
Schedule 40 Wall Thickness: With a wall thickness of 7.11mm (Schedule 40), this pipe offers a good balance between strength and weight. It is suitable for medium-pressure applications, including water distribution systems, gas lines, and structural supports. The thicker wall provides additional safety margin compared to Schedule 10 pipes, while still being lighter than Schedule 80.
Versatile Compatibility: The 6-inch (DN150) size is a common dimension in many piping systems, making it easy to source compatible fittings, flanges, and valves. Whether you are working on a new construction project or replacing old pipes, this product integrates seamlessly with existing infrastructure.
Quality Control: At Hemaokang Steel, every pipe is tested for dimensional accuracy, tensile strength, and galvanizing thickness. Our ISO9001-certified quality management system ensures that each batch meets the specified standards. We also offer third-party inspection upon request for added assurance.
Trusted by Global Markets
Hemaokang Steel (Shandong) Co., Ltd., established in 2025, has quickly become a reliable supplier in the steel pipe industry. With an annual export value exceeding US$50 million and a team of 51-100 experienced professionals, we serve customers across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and many other regions. Our products are shipped from the port of Qingdao, ensuring efficient logistics and timely delivery.
We understand that quality and consistency are critical for B2B buyers. That’s why we invest in advanced production equipment and rigorous testing procedures. Our galvanized steel pipes have been used in numerous infrastructure projects, including water treatment plants, agricultural irrigation systems, and commercial building frameworks. Customer feedback consistently highlights the excellent corrosion resistance and hassle-free installation of our threaded pipes.
Why Choose Hemaokang Steel? We offer competitive pricing, flexible customization (length, coating, threading), and professional after-sales support. Our dedicated sales team provides quick responses and technical assistance. We are committed to building long-term partnerships with clients worldwide. Contact us today for a quote or to discuss your specific requirements.
Frequently Asked Questions (FAQ)
- Q: What is the difference between hot-dipped galvanized and pre-galvanized pipes? A: Hot-dipped galvanized (HDG) pipes are immersed in molten zinc, creating a thicker, more durable coating compared to pre-galvanized pipes (which are coated with zinc before forming). HDG provides superior corrosion resistance, especially for outdoor or underground applications.
- Q: Can these pipes be used for potable water? A: Yes, hot-dipped galvanized pipes are commonly used for water supply lines. However, local regulations may vary. We recommend checking with your local health authority. The zinc coating is generally safe for cold water applications.
- Q: Are the threads compatible with standard fittings? A: Yes, the threads are manufactured to NPT (National Pipe Taper) standards, which are widely used in North America and many other regions. They are compatible with standard threaded fittings, couplings, and flanges.
- Q: What is the maximum operating pressure for this Schedule 40 pipe? A: For ASTM A53 Grade B Schedule 40 pipe (6-inch), the maximum allowable working pressure is approximately 600 psi (4.1 MPa) for seamless pipes, and slightly lower for welded pipes. Actual pressure rating depends on temperature and service conditions. Please consult with our engineering team for specific applications.
- Q: Can I get custom lengths other than 6 meters? A: Yes, we offer customization for lengths. Standard lengths are 6m, but we can cut to 3m, 4m, or other lengths as per your request. Custom lengths may affect pricing and lead time.
- Q: How do you ensure the quality of the galvanized coating? A: We perform routine tests including coating thickness measurement (using magnetic gauge), adhesion tests, and uniformity inspection. Our ISO9001 system ensures traceability and compliance with ASTM A53 and relevant standards.
- Q: What is the typical lead time for an order? A: For standard sizes, lead time is usually 15-25 days after confirmation of order and payment. Large quantities or custom specifications may require 30-40 days. We ship from Qingdao port, and transit time varies by destination.
- Q: Do you offer samples before bulk order? A: Yes, we can provide samples (subject to cost and shipping charges). Samples are typically 1-meter length with threaded ends. Contact our sales team to arrange sample delivery.
Hemaokang Steel (Shandong) Co., Ltd. – Your Trusted Partner for Galvanized Steel Pipes. Contact us for competitive pricing and reliable supply.
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