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Help CenterMill Test Report Provided Galvanized Steel Pipe 1/2 Inch to 6 Inch ERW Standard Compliant
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Welcome to Hemaokang Steel (Shandong) Co., Ltd. – your trusted partner for high-quality galvanized steel pipes. Established in 2025, we have rapidly grown into a global supplier with an annual export value of US$50 Million – US$100 Million, serving markets across North America, South America, Europe, Africa, Asia, and Oceania. Our galvanized steel pipes, ranging from 1/2 inch to 6 inch in diameter, are manufactured using advanced ERW (Electric Resistance Welding) technology and strictly comply with international standards. Each pipe is accompanied by a Mill Test Report to guarantee material integrity, chemical composition, and mechanical properties. With ISO9001:2015 certification and a dedicated team of 51–100 employees, we ensure every shipment meets the highest quality requirements.
Our galvanized steel pipes are designed for durability and corrosion resistance, making them ideal for water supply, oil & gas transmission, structural applications, and construction projects. The hot-dip galvanized coating provides a robust protective layer that extends service life even in harsh environments. Below, we present the key technical specifications and advantages of our product.
Product Features & Benefits
- Size Range: 1/2 inch to 6 inch nominal diameter – covers a wide spectrum of piping needs.
- ERW Standard Compliant: Manufactured per ASTM A53, API 5L, or equivalent standards (optional) – ensures consistent weld quality.
- Mill Test Report Provided: Full traceability with chemical and mechanical data – meets project documentation requirements.
- Hot-Dip Galvanized Coating: Uniform zinc layer (≥300 g/m²) – superior corrosion resistance and long service life.
- Customizable Lengths: Standard 6 m or 12 m, or custom lengths up to 18 m – flexible for different applications.
- End Finishes: Plain end, beveled end, or threaded with coupling – adapts to installation methods.
- Wall Thickness Options: Schedule 40, Schedule 80, or customer-specific – suitable for various pressure ratings.
- ISO9001 Certified Factory: Quality management system ensures consistent production control.
Technical Specifications (Typical Values)
| Parameter | Value |
| Nominal Pipe Size (NPS) | 1/2" – 6" |
| Outer Diameter (OD) | 21.3 mm – 168.3 mm |
| Wall Thickness | 1.65 mm – 7.11 mm (Schedule 40/80) |
| Length | 6 m / 12 m (custom up to 18 m) |
| Zinc Coating Weight | ≥ 300 g/m² (average) |
| Standard Compliance | ASTM A53 / API 5L (optional), ERW |
| Certification | ISO9001:2015, Mill Test Report |
Our ERW galvanized pipes are produced using high-frequency welding technology, which ensures a clean and uniform weld seam. The post-weld heat treatment eliminates residual stress, while the galvanizing process (hot-dip) creates a metallurgical bond between the zinc and steel. This results in a pipe that can withstand high pressure, temperature fluctuations, and mechanical stress. For buyers, this translates to reduced maintenance costs, longer replacement intervals, and safer operation in critical applications such as water distribution, fire protection systems, and structural supports.
We understand that each project has unique requirements. That's why we offer customizable options including special lengths, non-standard wall thicknesses, and various end finishes. Our team of engineers works closely with clients to provide tailored solutions, ensuring that the product fits seamlessly into existing pipelines or new constructions. The inclusion of a Mill Test Report with every batch gives you full confidence in the material's compliance with your specifications.
Why Choose Hemaokang Steel?
- Reliable Supply: With an annual export value of US$50–100 million, we have the capacity to handle large orders and tight deadlines.
- ISO9001 Certified Quality: Our production processes are audited regularly – ensuring consistent output.
- Global Reach: We export to North America, South America, Europe, Africa, Asia, Oceania – experienced in international logistics.
- Technical Support: Our team of 51–100 professionals provides pre-sales consultation and after-sales service.
- Competitive Pricing: Direct factory pricing eliminates middlemen, giving you cost advantages.
We invite you to experience the difference of working with a manufacturer that prioritizes quality, transparency, and customer satisfaction. Whether you need a small sample or a container-load shipment, we are ready to serve. Contact us today for a quote or to request a Mill Test Report sample.
Frequently Asked Questions (FAQ)
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Q: What is the difference between ERW and seamless galvanized pipes?
A: ERW pipes are made by welding a steel strip, while seamless pipes have no weld seam. ERW pipes are cost-effective for most general applications and offer excellent weld integrity. Our ERW pipes meet standard requirements and are suitable for low to medium pressure systems. -
Q: Can I request a Mill Test Report before placing an order?
A: Yes, we provide Mill Test Reports (MTR) for each production batch. A sample MTR can be sent upon request for your review. -
Q: What wall thicknesses are available for 2-inch pipe?
A: For 2-inch (NPS 2) galvanized pipe, standard wall thicknesses include Schedule 40 (3.91 mm) and Schedule 80 (5.54 mm). Other thicknesses can be customized. -
Q: Do you offer threaded ends with couplings?
A: Yes, we offer plain end, beveled end, and threaded with coupling options. Please specify your requirement when ordering. -
Q: What is the average lead time for a 20-foot container?
A: Typically 15–25 working days after order confirmation, depending on quantity and specifications. We can expedite for urgent projects. -
Q: Is your pipe suitable for underground water supply?
A: Yes, the hot-dip galvanized coating provides excellent corrosion resistance. However, for highly corrosive soil, additional wrapping or coating may be recommended – consult our technical team. -
Q: Do you provide samples for testing?
A: Yes, sample lengths are available. The cost of the sample and shipping can be discussed. Once confirmed, we can arrange shipment.
Hemaokang Steel (Shandong) Co., Ltd. – Your reliable partner for galvanized steel pipes. With ISO9001 certification, a commitment to quality, and a global distribution network, we deliver products that meet your exact needs. Contact us for a competitive quote and expert advice.
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